ffmpeg/configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92                            use rpath when linking programs [USE WITH CARE]
  93
  94 Licensing options:
  95   --enable-gpl             allow use of GPL code, the resulting libs
  96                            and binaries will be under GPL [no]
  97   --enable-version3        upgrade (L)GPL to version 3 [no]
  98   --enable-nonfree         allow use of nonfree code, the resulting libs
  99                            and binaries will be unredistributable [no]
 100
 101 Configuration options:
 102   --disable-static         do not build static libraries [no]
 103   --enable-shared          build shared libraries [no]
 104   --enable-small           optimize for size instead of speed
 105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 106   --enable-gray            enable full grayscale support (slower color)
 107   --disable-swscale-alpha  disable alpha channel support in swscale
 108   --disable-all            disable building components, libraries and programs
 109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 110   --enable-raise-major     increase major version numbers in sonames [no]
 111
 112 Program options:
 113   --disable-programs       do not build command line programs
 114   --disable-ffmpeg         disable ffmpeg build
 115   --disable-ffplay         disable ffplay build
 116   --disable-ffprobe        disable ffprobe build
 117   --disable-ffserver       disable ffserver build
 118
 119 Documentation options:
 120   --disable-doc            do not build documentation
 121   --disable-htmlpages      do not build HTML documentation pages
 122   --disable-manpages       do not build man documentation pages
 123   --disable-podpages       do not build POD documentation pages
 124   --disable-txtpages       do not build text documentation pages
 125
 126 Component options:
 127   --disable-avdevice       disable libavdevice build
 128   --disable-avcodec        disable libavcodec build
 129   --disable-avformat       disable libavformat build
 130   --disable-avutil         disable libavutil build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [auto]
 137   --disable-w32threads     disable Win32 threads [auto]
 138   --disable-os2threads     disable OS/2 threads [auto]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-dxva2          disable DXVA2 code [autodetect]
 153   --disable-vaapi          disable VAAPI code [autodetect]
 154   --disable-vda            disable VDA code [autodetect]
 155   --disable-vdpau          disable VDPAU code [autodetect]
 156
 157 Individual component options:
 158   --disable-everything     disable all components listed below
 159   --disable-encoder=NAME   disable encoder NAME
 160   --enable-encoder=NAME    enable encoder NAME
 161   --disable-encoders       disable all encoders
 162   --disable-decoder=NAME   disable decoder NAME
 163   --enable-decoder=NAME    enable decoder NAME
 164   --disable-decoders       disable all decoders
 165   --disable-hwaccel=NAME   disable hwaccel NAME
 166   --enable-hwaccel=NAME    enable hwaccel NAME
 167   --disable-hwaccels       disable all hwaccels
 168   --disable-muxer=NAME     disable muxer NAME
 169   --enable-muxer=NAME      enable muxer NAME
 170   --disable-muxers         disable all muxers
 171   --disable-demuxer=NAME   disable demuxer NAME
 172   --enable-demuxer=NAME    enable demuxer NAME
 173   --disable-demuxers       disable all demuxers
 174   --enable-parser=NAME     enable parser NAME
 175   --disable-parser=NAME    disable parser NAME
 176   --disable-parsers        disable all parsers
 177   --enable-bsf=NAME        enable bitstream filter NAME
 178   --disable-bsf=NAME       disable bitstream filter NAME
 179   --disable-bsfs           disable all bitstream filters
 180   --enable-protocol=NAME   enable protocol NAME
 181   --disable-protocol=NAME  disable protocol NAME
 182   --disable-protocols      disable all protocols
 183   --enable-indev=NAME      enable input device NAME
 184   --disable-indev=NAME     disable input device NAME
 185   --disable-indevs         disable input devices
 186   --enable-outdev=NAME     enable output device NAME
 187   --disable-outdev=NAME    disable output device NAME
 188   --disable-outdevs        disable output devices
 189   --disable-devices        disable all devices
 190   --enable-filter=NAME     enable filter NAME
 191   --disable-filter=NAME    disable filter NAME
 192   --disable-filters        disable all filters
 193
 194 External library support:
 195   --enable-avisynth        enable reading of AviSynth script files [no]
 196   --disable-bzlib          disable bzlib [autodetect]
 197   --enable-fontconfig      enable fontconfig
 198   --enable-frei0r          enable frei0r video filtering
 199   --enable-gnutls          enable gnutls [no]
 200   --disable-iconv          disable iconv [autodetect]
 201   --enable-ladspa          enable LADSPA audio filtering
 202   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 203   --enable-libass          enable libass subtitles rendering [no]
 204   --enable-libbluray       enable BluRay reading using libbluray [no]
 205   --enable-libbs2b         enable bs2b DSP library [no]
 206   --enable-libcaca         enable textual display using libcaca
 207   --enable-libcelt         enable CELT decoding via libcelt [no]
 208   --enable-libcdio         enable audio CD grabbing with libcdio
 209   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 210                            and libraw1394 [no]
 211   --enable-libfaac         enable AAC encoding via libfaac [no]
 212   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 213   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 214   --enable-libfreetype     enable libfreetype [no]
 215   --enable-libfribidi      enable libfribidi [no]
 216   --enable-libgme          enable Game Music Emu via libgme [no]
 217   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 218   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 219   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 220   --enable-libmodplug      enable ModPlug via libmodplug [no]
 221   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 222   --enable-libnut          enable NUT (de)muxing via libnut,
 223                            native (de)muxer exists [no]
 224   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 225   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 226   --enable-libopencv       enable video filtering via libopencv [no]
 227   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 228   --enable-libopus         enable Opus de/encoding via libopus [no]
 229   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 230   --enable-libquvi         enable quvi input via libquvi [no]
 231   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 232   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 233   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 234   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 235   --enable-libsoxr         enable Include libsoxr resampling [no]
 236   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 237   --enable-libssh          enable SFTP protocol via libssh [no]
 238   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 239   --enable-libtheora       enable Theora encoding via libtheora [no]
 240   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 241   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 242   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 243   --enable-libvidstab      enable video stabilization using vid.stab [no]
 244   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 245   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 246   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 247                            native implementation exists [no]
 248   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 249   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 250   --enable-libwebp         enable WebP encoding via libwebp [no]
 251   --enable-libx264         enable H.264 encoding via x264 [no]
 252   --enable-libx265         enable HEVC encoding via x265 [no]
 253   --enable-libxavs         enable AVS encoding via xavs [no]
 254   --enable-libxcb          enable X11 grabbing using XCB [auto]
 255   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
 256   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
 257   --enable-libxcb-shape    enable X11 grabbing shape rendering [auto]
 258   --enable-libxvid         enable Xvid encoding via xvidcore,
 259                            native MPEG-4/Xvid encoder exists [no]
 260   --enable-libzmq          enable message passing via libzmq [no]
 261   --enable-libzvbi         enable teletext support via libzvbi [no]
 262   --disable-lzma           disable lzma [autodetect]
 263   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
 264   --enable-openal          enable OpenAL 1.1 capture support [no]
 265   --enable-opencl          enable OpenCL code
 266   --enable-opengl          enable OpenGL rendering [no]
 267   --enable-openssl         enable openssl [no]
 268   --disable-sdl            disable sdl [autodetect]
 269   --enable-x11grab         enable X11 grabbing (legacy) [no]
 270   --disable-xlib           disable xlib [autodetect]
 271   --disable-zlib           disable zlib [autodetect]
 272
 273 Toolchain options:
 274   --arch=ARCH              select architecture [$arch]
 275   --cpu=CPU                select the minimum required CPU (affects
 276                            instruction selection, may crash on older CPUs)
 277   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 278   --progs-suffix=SUFFIX    program name suffix []
 279   --enable-cross-compile   assume a cross-compiler is used
 280   --sysroot=PATH           root of cross-build tree
 281   --sysinclude=PATH        location of cross-build system headers
 282   --target-os=OS           compiler targets OS [$target_os]
 283   --target-exec=CMD        command to run executables on target
 284   --target-path=DIR        path to view of build directory on target
 285   --target-samples=DIR     path to samples directory on target
 286   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 287   --toolchain=NAME         set tool defaults according to NAME
 288   --nm=NM                  use nm tool NM [$nm_default]
 289   --ar=AR                  use archive tool AR [$ar_default]
 290   --as=AS                  use assembler AS [$as_default]
 291   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 292   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 293   --cc=CC                  use C compiler CC [$cc_default]
 294   --cxx=CXX                use C compiler CXX [$cxx_default]
 295   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 296   --ld=LD                  use linker LD [$ld_default]
 297   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 298   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 299   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 300   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 301   --host-cc=HOSTCC         use host C compiler HOSTCC
 302   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 303   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 304   --host-ld=HOSTLD         use host linker HOSTLD
 305   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 306   --host-libs=HLIBS        use libs HLIBS when linking for host
 307   --host-os=OS             compiler host OS [$target_os]
 308   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 309   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 310   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 311   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 312   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 313   --extra-version=STRING   version string suffix []
 314   --optflags=OPTFLAGS      override optimization-related compiler flags
 315   --build-suffix=SUFFIX    library name suffix []
 316   --enable-pic             build position-independent code
 317   --enable-thumb           compile for Thumb instruction set
 318   --enable-lto             use link-time optimization
 319
 320 Advanced options (experts only):
 321   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 322   --disable-symver         disable symbol versioning
 323   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 324   --disable-safe-bitstream-reader
 325                            disable buffer boundary checking in bitreaders
 326                            (faster, but may crash)
 327   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 328   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 329
 330 Optimization options (experts only):
 331   --disable-asm            disable all assembly optimizations
 332   --disable-altivec        disable AltiVec optimizations
 333   --disable-amd3dnow       disable 3DNow! optimizations
 334   --disable-amd3dnowext    disable 3DNow! extended optimizations
 335   --disable-mmx            disable MMX optimizations
 336   --disable-mmxext         disable MMXEXT optimizations
 337   --disable-sse            disable SSE optimizations
 338   --disable-sse2           disable SSE2 optimizations
 339   --disable-sse3           disable SSE3 optimizations
 340   --disable-ssse3          disable SSSE3 optimizations
 341   --disable-sse4           disable SSE4 optimizations
 342   --disable-sse42          disable SSE4.2 optimizations
 343   --disable-avx            disable AVX optimizations
 344   --disable-xop            disable XOP optimizations
 345   --disable-fma3           disable FMA3 optimizations
 346   --disable-fma4           disable FMA4 optimizations
 347   --disable-avx2           disable AVX2 optimizations
 348   --disable-armv5te        disable armv5te optimizations
 349   --disable-armv6          disable armv6 optimizations
 350   --disable-armv6t2        disable armv6t2 optimizations
 351   --disable-vfp            disable VFP optimizations
 352   --disable-neon           disable NEON optimizations
 353   --disable-inline-asm     disable use of inline assembly
 354   --disable-yasm           disable use of nasm/yasm assembly
 355   --disable-mips32r2       disable MIPS32R2 optimizations
 356   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 357   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 358   --disable-mipsfpu        disable floating point MIPS optimizations
 359   --disable-fast-unaligned consider unaligned accesses slow
 360
 361 Developer options (useful when working on FFmpeg itself):
 362   --disable-debug          disable debugging symbols
 363   --enable-debug=LEVEL     set the debug level [$debuglevel]
 364   --disable-optimizations  disable compiler optimizations
 365   --enable-extra-warnings  enable more compiler warnings
 366   --disable-stripping      disable stripping of executables and shared libraries
 367   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 368                            2 causes a slowdown at runtime.
 369   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 370   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 371                            leaks and errors, using the specified valgrind binary.
 372                            Cannot be combined with --target-exec
 373   --enable-ftrapv          Trap arithmetic overflows
 374   --samples=PATH           location of test samples for FATE, if not set use
 375                            \$FATE_SAMPLES at make invocation time.
 376   --enable-neon-clobber-test check NEON registers for clobbering (should be
 377                            used only for debugging purposes)
 378   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 379                            should be used only for debugging purposes)
 380   --enable-random          randomly enable/disable components
 381   --disable-random
 382   --enable-random=LIST     randomly enable/disable specific components or
 383   --disable-random=LIST    component groups. LIST is a comma-separated list
 384                            of NAME[:PROB] entries where NAME is a component
 385                            (group) and PROB the probability associated with
 386                            NAME (default 0.5).
 387   --random-seed=VALUE      seed value for --enable/disable-random
 388
 389 NOTE: Object files are built at the place where configure is launched.
 390 EOF
 391   exit 0
 392 }
 393
 394 quotes='""'
 395
 396 log(){
 397     echo "$@" >> $logfile
 398 }
 399
 400 log_file(){
 401     log BEGIN $1
 402     pr -n -t $1 >> $logfile
 403     log END $1
 404 }
 405
 406 echolog(){
 407     log "$@"
 408     echo "$@"
 409 }
 410
 411 warn(){
 412     log "WARNING: $*"
 413     WARNINGS="${WARNINGS}WARNING: $*\n"
 414 }
 415
 416 die(){
 417     echolog "$@"
 418     cat <<EOF
 419
 420 If you think configure made a mistake, make sure you are using the latest
 421 version from Git.  If the latest version fails, report the problem to the
 422 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 423 EOF
 424     if disabled logging; then
 425         cat <<EOF
 426 Rerun configure with logging enabled (do not use --disable-logging), and
 427 include the log this produces with your report.
 428 EOF
 429     else
 430         cat <<EOF
 431 Include the log file "$logfile" produced by configure as this will help
 432 solve the problem.
 433 EOF
 434     fi
 435     exit 1
 436 }
 437
 438 # Avoid locale weirdness, besides we really just want to translate ASCII.
 439 toupper(){
 440     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 441 }
 442
 443 tolower(){
 444     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 445 }
 446
 447 c_escape(){
 448     echo "$*" | sed 's/["\\]/\\\0/g'
 449 }
 450
 451 sh_quote(){
 452     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 453     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 454     echo "$v"
 455 }
 456
 457 cleanws(){
 458     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 459 }
 460
 461 filter(){
 462     pat=$1
 463     shift
 464     for v; do
 465         eval "case $v in $pat) echo $v ;; esac"
 466     done
 467 }
 468
 469 filter_out(){
 470     pat=$1
 471     shift
 472     for v; do
 473         eval "case $v in $pat) ;; *) echo $v ;; esac"
 474     done
 475 }
 476
 477 map(){
 478     m=$1
 479     shift
 480     for v; do eval $m; done
 481 }
 482
 483 add_suffix(){
 484     suffix=$1
 485     shift
 486     for v; do echo ${v}${suffix}; done
 487 }
 488
 489 set_all(){
 490     value=$1
 491     shift
 492     for var in $*; do
 493         eval $var=$value
 494     done
 495 }
 496
 497 set_weak(){
 498     value=$1
 499     shift
 500     for var; do
 501         eval : \${$var:=$value}
 502     done
 503 }
 504
 505 sanitize_var_name(){
 506     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 507 }
 508
 509 set_safe(){
 510     var=$1
 511     shift
 512     eval $(sanitize_var_name "$var")='$*'
 513 }
 514
 515 get_safe(){
 516     eval echo \$$(sanitize_var_name "$1")
 517 }
 518
 519 pushvar(){
 520     for pvar in $*; do
 521         eval level=\${${pvar}_level:=0}
 522         eval ${pvar}_${level}="\$$pvar"
 523         eval ${pvar}_level=$(($level+1))
 524     done
 525 }
 526
 527 popvar(){
 528     for pvar in $*; do
 529         eval level=\${${pvar}_level:-0}
 530         test $level = 0 && continue
 531         eval level=$(($level-1))
 532         eval $pvar="\${${pvar}_${level}}"
 533         eval ${pvar}_level=$level
 534         eval unset ${pvar}_${level}
 535     done
 536 }
 537
 538 enable(){
 539     set_all yes $*
 540 }
 541
 542 disable(){
 543     set_all no $*
 544 }
 545
 546 enable_weak(){
 547     set_weak yes $*
 548 }
 549
 550 disable_weak(){
 551     set_weak no $*
 552 }
 553
 554 enable_safe(){
 555     for var; do
 556         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 557     done
 558 }
 559
 560 disable_safe(){
 561     for var; do
 562         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 563     done
 564 }
 565
 566 do_enable_deep(){
 567     for var; do
 568         enabled $var && continue
 569         eval sel="\$${var}_select"
 570         eval sgs="\$${var}_suggest"
 571         pushvar var sgs
 572         enable_deep $sel
 573         popvar sgs
 574         enable_deep_weak $sgs
 575         popvar var
 576     done
 577 }
 578
 579 enable_deep(){
 580     do_enable_deep $*
 581     enable $*
 582 }
 583
 584 enable_deep_weak(){
 585     for var; do
 586         disabled $var && continue
 587         pushvar var
 588         do_enable_deep $var
 589         popvar var
 590         enable_weak $var
 591     done
 592 }
 593
 594 enabled(){
 595     test "${1#!}" = "$1" && op== || op=!=
 596     eval test "x\$${1#!}" $op "xyes"
 597 }
 598
 599 disabled(){
 600     test "${1#!}" = "$1" && op== || op=!=
 601     eval test "x\$${1#!}" $op "xno"
 602 }
 603
 604 enabled_all(){
 605     for opt; do
 606         enabled $opt || return 1
 607     done
 608 }
 609
 610 disabled_all(){
 611     for opt; do
 612         disabled $opt || return 1
 613     done
 614 }
 615
 616 enabled_any(){
 617     for opt; do
 618         enabled $opt && return 0
 619     done
 620 }
 621
 622 disabled_any(){
 623     for opt; do
 624         disabled $opt && return 0
 625     done
 626     return 1
 627 }
 628
 629 set_default(){
 630     for opt; do
 631         eval : \${$opt:=\$${opt}_default}
 632     done
 633 }
 634
 635 is_in(){
 636     value=$1
 637     shift
 638     for var in $*; do
 639         [ $var = $value ] && return 0
 640     done
 641     return 1
 642 }
 643
 644 do_check_deps(){
 645     for cfg; do
 646         cfg="${cfg#!}"
 647         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 648         disabled ${cfg}_checking && continue
 649         enable ${cfg}_checking
 650         append allopts $cfg
 651
 652         eval dep_all="\$${cfg}_deps"
 653         eval dep_any="\$${cfg}_deps_any"
 654         eval dep_sel="\$${cfg}_select"
 655         eval dep_sgs="\$${cfg}_suggest"
 656         eval dep_ifa="\$${cfg}_if"
 657         eval dep_ifn="\$${cfg}_if_any"
 658
 659         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 660         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 661         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 662
 663         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 664         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 665         enabled_all  $dep_all || disable $cfg
 666         enabled_any  $dep_any || disable $cfg
 667         disabled_any $dep_sel && disable $cfg
 668
 669         if enabled $cfg; then
 670             enable_deep $dep_sel
 671             enable_deep_weak $dep_sgs
 672         fi
 673
 674         disable ${cfg}_checking
 675     done
 676 }
 677
 678 check_deps(){
 679     unset allopts
 680
 681     do_check_deps "$@"
 682
 683     for cfg in $allopts; do
 684         enabled $cfg || continue
 685         eval dep_extralibs="\$${cfg}_extralibs"
 686         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 687     done
 688 }
 689
 690 print_config(){
 691     pfx=$1
 692     files=$2
 693     shift 2
 694     map 'eval echo "$v \${$v:-no}"' "$@" |
 695     awk "BEGIN { split(\"$files\", files) }
 696         {
 697             c = \"$pfx\" toupper(\$1);
 698             v = \$2;
 699             sub(/yes/, 1, v);
 700             sub(/no/,  0, v);
 701             for (f in files) {
 702                 file = files[f];
 703                 if (file ~ /\\.h\$/) {
 704                     printf(\"#define %s %d\\n\", c, v) >>file;
 705                 } else if (file ~ /\\.asm\$/) {
 706                     printf(\"%%define %s %d\\n\", c, v) >>file;
 707                 } else if (file ~ /\\.mak\$/) {
 708                     n = -v ? \"\" : \"!\";
 709                     printf(\"%s%s=yes\\n\", n, c) >>file;
 710                 } else if (file ~ /\\.texi\$/) {
 711                     pre = -v ? \"\" : \"@c \";
 712                     yesno = \$2;
 713                     c2 = tolower(c);
 714                     gsub(/_/, \"-\", c2);
 715                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 716                 }
 717             }
 718         }"
 719 }
 720
 721 print_enabled(){
 722     suf=$1
 723     shift
 724     for v; do
 725         enabled $v && printf "%s\n" ${v%$suf};
 726     done
 727 }
 728
 729 append(){
 730     var=$1
 731     shift
 732     eval "$var=\"\$$var $*\""
 733 }
 734
 735 prepend(){
 736     var=$1
 737     shift
 738     eval "$var=\"$* \$$var\""
 739 }
 740
 741 unique(){
 742     var=$1
 743     uniq_list=""
 744     for tok in $(eval echo \$$var); do
 745         uniq_list="$(filter_out $tok $uniq_list) $tok"
 746     done
 747     eval "$var=\"${uniq_list}\""
 748 }
 749
 750 add_cppflags(){
 751     append CPPFLAGS "$@"
 752 }
 753
 754 add_cflags(){
 755     append CFLAGS $($cflags_filter "$@")
 756 }
 757
 758 add_cxxflags(){
 759     append CXXFLAGS $($cflags_filter "$@")
 760 }
 761
 762 add_asflags(){
 763     append ASFLAGS $($asflags_filter "$@")
 764 }
 765
 766 add_ldflags(){
 767     append LDFLAGS $($ldflags_filter "$@")
 768 }
 769
 770 add_ldexeflags(){
 771     append LDEXEFLAGS $($ldflags_filter "$@")
 772 }
 773
 774 add_stripflags(){
 775     append ASMSTRIPFLAGS "$@"
 776 }
 777
 778 add_extralibs(){
 779     prepend extralibs $($ldflags_filter "$@")
 780 }
 781
 782 add_host_cppflags(){
 783     append host_cppflags "$@"
 784 }
 785
 786 add_host_cflags(){
 787     append host_cflags $($host_cflags_filter "$@")
 788 }
 789
 790 add_host_ldflags(){
 791     append host_ldflags $($host_ldflags_filter "$@")
 792 }
 793
 794 add_compat(){
 795     append compat_objs $1
 796     shift
 797     map 'add_cppflags -D$v' "$@"
 798 }
 799
 800 check_cmd(){
 801     log "$@"
 802     "$@" >> $logfile 2>&1
 803 }
 804
 805 check_stat(){
 806     log check_stat "$@"
 807     stat "$1" >> $logfile 2>&1
 808 }
 809
 810 cc_o(){
 811     eval printf '%s\\n' $CC_O
 812 }
 813
 814 cc_e(){
 815     eval printf '%s\\n' $CC_E
 816 }
 817
 818 check_cc(){
 819     log check_cc "$@"
 820     cat > $TMPC
 821     log_file $TMPC
 822     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 823 }
 824
 825 check_cxx(){
 826     log check_cxx "$@"
 827     cat > $TMPCPP
 828     log_file $TMPCPP
 829     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 830 }
 831
 832 check_oc(){
 833     log check_oc "$@"
 834     cat > $TMPM
 835     log_file $TMPM
 836     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 837 }
 838
 839 check_cpp(){
 840     log check_cpp "$@"
 841     cat > $TMPC
 842     log_file $TMPC
 843     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 844 }
 845
 846 as_o(){
 847     eval printf '%s\\n' $AS_O
 848 }
 849
 850 check_as(){
 851     log check_as "$@"
 852     cat > $TMPS
 853     log_file $TMPS
 854     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 855 }
 856
 857 check_inline_asm(){
 858     log check_inline_asm "$@"
 859     name="$1"
 860     code="$2"
 861     shift 2
 862     disable $name
 863     check_cc "$@" <<EOF && enable $name
 864 void foo(void){ __asm__ volatile($code); }
 865 EOF
 866 }
 867
 868 check_insn(){
 869     log check_insn "$@"
 870     check_inline_asm ${1}_inline "\"$2\""
 871     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 872 }
 873
 874 check_yasm(){
 875     log check_yasm "$@"
 876     echo "$1" > $TMPS
 877     log_file $TMPS
 878     shift 1
 879     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 880 }
 881
 882 ld_o(){
 883     eval printf '%s\\n' $LD_O
 884 }
 885
 886 check_ld(){
 887     log check_ld "$@"
 888     type=$1
 889     shift 1
 890     flags=$(filter_out '-l*|*.so' $@)
 891     libs=$(filter '-l*|*.so' $@)
 892     check_$type $($cflags_filter $flags) || return
 893     flags=$($ldflags_filter $flags)
 894     libs=$($ldflags_filter $libs)
 895     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 896 }
 897
 898 print_include(){
 899     hdr=$1
 900     test "${hdr%.h}" = "${hdr}" &&
 901         echo "#include $hdr"    ||
 902         echo "#include <$hdr>"
 903 }
 904
 905 check_code(){
 906     log check_code "$@"
 907     check=$1
 908     headers=$2
 909     code=$3
 910     shift 3
 911     {
 912         for hdr in $headers; do
 913             print_include $hdr
 914         done
 915         echo "int main(void) { $code; return 0; }"
 916     } | check_$check "$@"
 917 }
 918
 919 check_cppflags(){
 920     log check_cppflags "$@"
 921     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 922 int x;
 923 EOF
 924 }
 925
 926 test_cflags(){
 927     log test_cflags "$@"
 928     set -- $($cflags_filter "$@")
 929     check_cc "$@" <<EOF
 930 int x;
 931 EOF
 932 }
 933
 934 check_cflags(){
 935     log check_cflags "$@"
 936     test_cflags "$@" && add_cflags "$@"
 937 }
 938
 939 check_cxxflags(){
 940     log check_cxxflags "$@"
 941     set -- $($cflags_filter "$@")
 942     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 943 int x;
 944 EOF
 945 }
 946
 947 test_ldflags(){
 948     log test_ldflags "$@"
 949     check_ld "cc" "$@" <<EOF
 950 int main(void){ return 0; }
 951 EOF
 952 }
 953
 954 check_ldflags(){
 955     log check_ldflags "$@"
 956     test_ldflags "$@" && add_ldflags "$@"
 957 }
 958
 959 test_stripflags(){
 960     log test_stripflags "$@"
 961     # call check_cc to get a fresh TMPO
 962     check_cc <<EOF
 963 int main(void) { return 0; }
 964 EOF
 965     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 966 }
 967
 968 check_stripflags(){
 969     log check_stripflags "$@"
 970     test_stripflags "$@" && add_stripflags "$@"
 971 }
 972
 973 check_header(){
 974     log check_header "$@"
 975     header=$1
 976     shift
 977     disable_safe $header
 978     check_cpp "$@" <<EOF && enable_safe $header
 979 #include <$header>
 980 int x;
 981 EOF
 982 }
 983
 984 check_header_oc(){
 985     log check_header_oc "$@"
 986     rm -f -- "$TMPO"
 987     header=$1
 988     shift
 989     disable_safe $header
 990     {
 991        echo "#include <$header>"
 992        echo "int main(void) { return 0; }"
 993     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 994 }
 995
 996 check_func(){
 997     log check_func "$@"
 998     func=$1
 999     shift
1000     disable $func
1001     check_ld "cc" "$@" <<EOF && enable $func
1002 extern int $func();
1003 int main(void){ $func(); }
1004 EOF
1005 }
1006
1007 check_mathfunc(){
1008     log check_mathfunc "$@"
1009     func=$1
1010     narg=$2
1011     shift 2
1012     test $narg = 2 && args="f, g" || args="f"
1013     disable $func
1014     check_ld "cc" "$@" <<EOF && enable $func
1015 #include <math.h>
1016 float foo(float f, float g) { return $func($args); }
1017 int main(void){ return (int) foo; }
1018 EOF
1019 }
1020
1021 check_func_headers(){
1022     log check_func_headers "$@"
1023     headers=$1
1024     funcs=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             print_include $hdr
1029         done
1030         for func in $funcs; do
1031             echo "long check_$func(void) { return (long) $func; }"
1032         done
1033         echo "int main(void) { return 0; }"
1034     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1035 }
1036
1037 check_class_headers_cpp(){
1038     log check_class_headers_cpp "$@"
1039     headers=$1
1040     classes=$2
1041     shift 2
1042     {
1043         for hdr in $headers; do
1044             echo "#include <$hdr>"
1045         done
1046         echo "int main(void) { "
1047         i=1
1048         for class in $classes; do
1049             echo "$class obj$i;"
1050             i=$(expr $i + 1)
1051         done
1052         echo "return 0; }"
1053     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1054 }
1055
1056 check_cpp_condition(){
1057     log check_cpp_condition "$@"
1058     header=$1
1059     condition=$2
1060     shift 2
1061     check_cpp "$@" <<EOF
1062 #include <$header>
1063 #if !($condition)
1064 #error "unsatisfied condition: $condition"
1065 #endif
1066 EOF
1067 }
1068
1069 check_lib(){
1070     log check_lib "$@"
1071     header="$1"
1072     func="$2"
1073     shift 2
1074     check_header $header && check_func $func "$@" && add_extralibs "$@"
1075 }
1076
1077 check_lib2(){
1078     log check_lib2 "$@"
1079     headers="$1"
1080     funcs="$2"
1081     shift 2
1082     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1083 }
1084
1085 check_lib_cpp(){
1086     log check_lib_cpp "$@"
1087     headers="$1"
1088     classes="$2"
1089     shift 2
1090     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1091 }
1092
1093 check_pkg_config(){
1094     log check_pkg_config "$@"
1095     pkgandversion="$1"
1096     pkg="${1%% *}"
1097     headers="$2"
1098     funcs="$3"
1099     shift 3
1100     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1101     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1102     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1103     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1104         set_safe ${pkg}_cflags $pkg_cflags   &&
1105         set_safe ${pkg}_libs   $pkg_libs
1106 }
1107
1108 check_exec(){
1109     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1110 }
1111
1112 check_exec_crash(){
1113     code=$(cat)
1114
1115     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1116     # are safe but may not be available everywhere.  Thus we use
1117     # raise(SIGTERM) instead.  The check is run in a subshell so we
1118     # can redirect the "Terminated" message from the shell.  SIGBUS
1119     # is not defined by standard C so it is used conditionally.
1120
1121     (check_exec "$@") >> $logfile 2>&1 <<EOF
1122 #include <signal.h>
1123 static void sighandler(int sig){
1124     raise(SIGTERM);
1125 }
1126 int foo(void){
1127     $code
1128 }
1129 int (*func_ptr)(void) = foo;
1130 int main(void){
1131     signal(SIGILL, sighandler);
1132     signal(SIGFPE, sighandler);
1133     signal(SIGSEGV, sighandler);
1134 #ifdef SIGBUS
1135     signal(SIGBUS, sighandler);
1136 #endif
1137     return func_ptr();
1138 }
1139 EOF
1140 }
1141
1142 check_type(){
1143     log check_type "$@"
1144     headers=$1
1145     type=$2
1146     shift 2
1147     disable_safe "$type"
1148     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1149 }
1150
1151 check_struct(){
1152     log check_struct "$@"
1153     headers=$1
1154     struct=$2
1155     member=$3
1156     shift 3
1157     disable_safe "${struct}_${member}"
1158     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1159         enable_safe "${struct}_${member}"
1160 }
1161
1162 check_builtin(){
1163     log check_builtin "$@"
1164     name=$1
1165     headers=$2
1166     builtin=$3
1167     shift 3
1168     disable "$name"
1169     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1170 }
1171
1172 check_compile_assert(){
1173     log check_compile_assert "$@"
1174     name=$1
1175     headers=$2
1176     condition=$3
1177     shift 3
1178     disable "$name"
1179     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1180 }
1181
1182 require(){
1183     name="$1"
1184     header="$2"
1185     func="$3"
1186     shift 3
1187     check_lib $header $func "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require2(){
1191     name="$1"
1192     headers="$2"
1193     func="$3"
1194     shift 3
1195     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1196 }
1197
1198 require_cpp(){
1199     name="$1"
1200     headers="$2"
1201     classes="$3"
1202     shift 3
1203     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1204 }
1205
1206 use_pkg_config(){
1207     pkg="$1"
1208     check_pkg_config "$@" || return 1
1209     add_cflags    $(get_safe ${pkg}_cflags)
1210     add_extralibs $(get_safe ${pkg}_libs)
1211 }
1212
1213 require_pkg_config(){
1214     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1215 }
1216
1217 require_libfreetype(){
1218     log require_libfreetype "$@"
1219     pkg="freetype2"
1220     check_cmd $pkg_config --exists --print-errors $pkg \
1221       || die "ERROR: $pkg not found"
1222     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1223     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1224     {
1225         echo "#include <ft2build.h>"
1226         echo "#include FT_FREETYPE_H"
1227         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1228         echo "int main(void) { return 0; }"
1229     } | check_ld "cc" $pkg_cflags $pkg_libs \
1230       && set_safe ${pkg}_cflags $pkg_cflags \
1231       && set_safe ${pkg}_libs   $pkg_libs \
1232       || die "ERROR: $pkg not found"
1233     add_cflags    $(get_safe ${pkg}_cflags)
1234     add_extralibs $(get_safe ${pkg}_libs)
1235 }
1236
1237 hostcc_e(){
1238     eval printf '%s\\n' $HOSTCC_E
1239 }
1240
1241 hostcc_o(){
1242     eval printf '%s\\n' $HOSTCC_O
1243 }
1244
1245 check_host_cc(){
1246     log check_host_cc "$@"
1247     cat > $TMPC
1248     log_file $TMPC
1249     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1250 }
1251
1252 check_host_cpp(){
1253     log check_host_cpp "$@"
1254     cat > $TMPC
1255     log_file $TMPC
1256     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1257 }
1258
1259 check_host_cppflags(){
1260     log check_host_cppflags "$@"
1261     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1262 int x;
1263 EOF
1264 }
1265
1266 check_host_cflags(){
1267     log check_host_cflags "$@"
1268     set -- $($host_cflags_filter "$@")
1269     check_host_cc "$@" <<EOF && append host_cflags "$@"
1270 int x;
1271 EOF
1272 }
1273
1274 check_host_cpp_condition(){
1275     log check_host_cpp_condition "$@"
1276     header=$1
1277     condition=$2
1278     shift 2
1279     check_host_cpp "$@" <<EOF
1280 #include <$header>
1281 #if !($condition)
1282 #error "unsatisfied condition: $condition"
1283 #endif
1284 EOF
1285 }
1286
1287 apply(){
1288     file=$1
1289     shift
1290     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1291 }
1292
1293 cp_if_changed(){
1294     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1295     mkdir -p "$(dirname $2)"
1296     $cp_f "$1" "$2"
1297 }
1298
1299 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1300 # system-dependent things.
1301
1302 COMPONENT_LIST="
1303     bsfs
1304     decoders
1305     demuxers
1306     encoders
1307     filters
1308     hwaccels
1309     indevs
1310     muxers
1311     outdevs
1312     parsers
1313     protocols
1314 "
1315
1316 EXAMPLE_LIST="
1317     avio_reading_example
1318     decoding_encoding_example
1319     demuxing_decoding_example
1320     extract_mvs_example
1321     filter_audio_example
1322     filtering_audio_example
1323     filtering_video_example
1324     metadata_example
1325     muxing_example
1326     remuxing_example
1327     resampling_audio_example
1328     scaling_video_example
1329     transcode_aac_example
1330     transcoding_example
1331 "
1332
1333 EXTERNAL_LIBRARY_LIST="
1334     avisynth
1335     bzlib
1336     crystalhd
1337     decklink
1338     frei0r
1339     gnutls
1340     iconv
1341     ladspa
1342     libaacplus
1343     libass
1344     libbluray
1345     libbs2b
1346     libcaca
1347     libcdio
1348     libcelt
1349     libdc1394
1350     libfaac
1351     libfdk_aac
1352     libflite
1353     libfontconfig
1354     libfreetype
1355     libfribidi
1356     libgme
1357     libgsm
1358     libiec61883
1359     libilbc
1360     libmodplug
1361     libmp3lame
1362     libnut
1363     libopencore_amrnb
1364     libopencore_amrwb
1365     libopencv
1366     libopenjpeg
1367     libopus
1368     libpulse
1369     libquvi
1370     librtmp
1371     libschroedinger
1372     libshine
1373     libsmbclient
1374     libsoxr
1375     libspeex
1376     libssh
1377     libstagefright_h264
1378     libtheora
1379     libtwolame
1380     libutvideo
1381     libv4l2
1382     libvidstab
1383     libvo_aacenc
1384     libvo_amrwbenc
1385     libvorbis
1386     libvpx
1387     libwavpack
1388     libwebp
1389     libx264
1390     libx265
1391     libxavs
1392     libxcb
1393     libxcb_shm
1394     libxcb_shape
1395     libxcb_xfixes
1396     libxvid
1397     libzmq
1398     libzvbi
1399     lzma
1400     openal
1401     opencl
1402     opengl
1403     openssl
1404     sdl
1405     x11grab
1406     xlib
1407     zlib
1408 "
1409
1410 DOCUMENT_LIST="
1411     doc
1412     htmlpages
1413     manpages
1414     podpages
1415     txtpages
1416 "
1417
1418 FEATURE_LIST="
1419     ftrapv
1420     gray
1421     hardcoded_tables
1422     runtime_cpudetect
1423     safe_bitstream_reader
1424     shared
1425     small
1426     static
1427     swscale_alpha
1428 "
1429
1430 HWACCEL_LIST="
1431     dxva2
1432     vaapi
1433     vda
1434     vdpau
1435     xvmc
1436 "
1437
1438 LIBRARY_LIST="
1439     avcodec
1440     avdevice
1441     avfilter
1442     avformat
1443     avresample
1444     avutil
1445     postproc
1446     swresample
1447     swscale
1448 "
1449
1450 LICENSE_LIST="
1451     gpl
1452     nonfree
1453     version3
1454 "
1455
1456 PROGRAM_LIST="
1457     ffplay
1458     ffprobe
1459     ffserver
1460     ffmpeg
1461 "
1462
1463 SUBSYSTEM_LIST="
1464     dct
1465     dwt
1466     error_resilience
1467     faan
1468     fast_unaligned
1469     fft
1470     lsp
1471     lzo
1472     mdct
1473     pixelutils
1474     network
1475     rdft
1476 "
1477
1478 CONFIG_LIST="
1479     $COMPONENT_LIST
1480     $DOCUMENT_LIST
1481     $EXAMPLE_LIST
1482     $EXTERNAL_LIBRARY_LIST
1483     $FEATURE_LIST
1484     $HWACCEL_LIST
1485     $LICENSE_LIST
1486     $LIBRARY_LIST
1487     $PROGRAM_LIST
1488     $SUBSYSTEM_LIST
1489     fontconfig
1490     incompatible_libav_abi
1491     memalign_hack
1492     memory_poisoning
1493     neon_clobber_test
1494     pic
1495     pod2man
1496     raise_major
1497     thumb
1498     xmm_clobber_test
1499 "
1500
1501 THREADS_LIST="
1502     pthreads
1503     os2threads
1504     w32threads
1505 "
1506
1507 ATOMICS_LIST="
1508     atomics_gcc
1509     atomics_suncc
1510     atomics_win32
1511 "
1512
1513 ARCH_LIST="
1514     aarch64
1515     alpha
1516     arm
1517     avr32
1518     avr32_ap
1519     avr32_uc
1520     bfin
1521     ia64
1522     m68k
1523     mips
1524     mips64
1525     parisc
1526     ppc
1527     ppc64
1528     s390
1529     sh4
1530     sparc
1531     sparc64
1532     tilegx
1533     tilepro
1534     tomi
1535     x86
1536     x86_32
1537     x86_64
1538 "
1539
1540 ARCH_EXT_LIST_ARM="
1541     armv5te
1542     armv6
1543     armv6t2
1544     armv8
1545     neon
1546     vfp
1547     vfpv3
1548     setend
1549 "
1550
1551 ARCH_EXT_LIST_MIPS="
1552     mipsfpu
1553     mips32r2
1554     mipsdspr1
1555     mipsdspr2
1556 "
1557
1558 ARCH_EXT_LIST_X86_SIMD="
1559     amd3dnow
1560     amd3dnowext
1561     avx
1562     avx2
1563     fma3
1564     fma4
1565     mmx
1566     mmxext
1567     sse
1568     sse2
1569     sse3
1570     sse4
1571     sse42
1572     ssse3
1573     xop
1574 "
1575
1576 ARCH_EXT_LIST_PPC="
1577     altivec
1578     dcbzl
1579     ldbrx
1580     ppc4xx
1581     vsx
1582 "
1583
1584 ARCH_EXT_LIST_X86="
1585     $ARCH_EXT_LIST_X86_SIMD
1586     cpunop
1587     i686
1588 "
1589
1590 ARCH_EXT_LIST="
1591     $ARCH_EXT_LIST_ARM
1592     $ARCH_EXT_LIST_PPC
1593     $ARCH_EXT_LIST_X86
1594     $ARCH_EXT_LIST_MIPS
1595     loongson
1596 "
1597
1598 ARCH_FEATURES="
1599     aligned_stack
1600     fast_64bit
1601     fast_clz
1602     fast_cmov
1603     local_aligned_8
1604     local_aligned_16
1605     local_aligned_32
1606     simd_align_16
1607 "
1608
1609 BUILTIN_LIST="
1610     atomic_cas_ptr
1611     atomic_compare_exchange
1612     machine_rw_barrier
1613     MemoryBarrier
1614     mm_empty
1615     rdtsc
1616     sarestart
1617     sync_val_compare_and_swap
1618 "
1619 HAVE_LIST_CMDLINE="
1620     inline_asm
1621     symver
1622     yasm
1623 "
1624
1625 HAVE_LIST_PUB="
1626     bigendian
1627     fast_unaligned
1628     incompatible_libav_abi
1629 "
1630
1631 HEADERS_LIST="
1632     alsa_asoundlib_h
1633     altivec_h
1634     arpa_inet_h
1635     asm_types_h
1636     cdio_paranoia_h
1637     cdio_paranoia_paranoia_h
1638     CL_cl_h
1639     dev_bktr_ioctl_bt848_h
1640     dev_bktr_ioctl_meteor_h
1641     dev_ic_bt8xx_h
1642     dev_video_bktr_ioctl_bt848_h
1643     dev_video_meteor_ioctl_meteor_h
1644     direct_h
1645     dlfcn_h
1646     dxva_h
1647     ES2_gl_h
1648     gsm_h
1649     io_h
1650     mach_mach_time_h
1651     machine_ioctl_bt848_h
1652     machine_ioctl_meteor_h
1653     malloc_h
1654     openjpeg_1_5_openjpeg_h
1655     OpenGL_gl3_h
1656     poll_h
1657     sndio_h
1658     soundcard_h
1659     sys_mman_h
1660     sys_param_h
1661     sys_resource_h
1662     sys_select_h
1663     sys_soundcard_h
1664     sys_time_h
1665     sys_un_h
1666     sys_videoio_h
1667     termios_h
1668     udplite_h
1669     unistd_h
1670     windows_h
1671     winsock2_h
1672 "
1673
1674 INTRINSICS_LIST="
1675     intrinsics_neon
1676 "
1677
1678 MATH_FUNCS="
1679     atanf
1680     atan2f
1681     cbrt
1682     cbrtf
1683     cosf
1684     exp2
1685     exp2f
1686     expf
1687     isinf
1688     isnan
1689     ldexpf
1690     llrint
1691     llrintf
1692     log2
1693     log2f
1694     log10f
1695     lrint
1696     lrintf
1697     powf
1698     rint
1699     round
1700     roundf
1701     sinf
1702     trunc
1703     truncf
1704 "
1705
1706 SYSTEM_FUNCS="
1707     access
1708     aligned_malloc
1709     clock_gettime
1710     closesocket
1711     CommandLineToArgvW
1712     CoTaskMemFree
1713     CryptGenRandom
1714     dlopen
1715     fcntl
1716     flt_lim
1717     fork
1718     getaddrinfo
1719     gethrtime
1720     getopt
1721     GetProcessAffinityMask
1722     GetProcessMemoryInfo
1723     GetProcessTimes
1724     getrusage
1725     getservbyport
1726     GetSystemTimeAsFileTime
1727     gettimeofday
1728     glob
1729     glXGetProcAddress
1730     gmtime_r
1731     inet_aton
1732     isatty
1733     jack_port_get_latency_range
1734     kbhit
1735     localtime_r
1736     lzo1x_999_compress
1737     mach_absolute_time
1738     MapViewOfFile
1739     MoveFileExA
1740     memalign
1741     mkstemp
1742     mmap
1743     mprotect
1744     nanosleep
1745     PeekNamedPipe
1746     posix_memalign
1747     pthread_cancel
1748     sched_getaffinity
1749     SetConsoleTextAttribute
1750     setmode
1751     setrlimit
1752     Sleep
1753     strerror_r
1754     sysconf
1755     sysctl
1756     usleep
1757     VirtualAlloc
1758     wglGetProcAddress
1759 "
1760
1761 TOOLCHAIN_FEATURES="
1762     as_dn_directive
1763     as_func
1764     asm_mod_q
1765     attribute_may_alias
1766     attribute_packed
1767     ebp_available
1768     ebx_available
1769     gnu_as
1770     gnu_windres
1771     ibm_asm
1772     inline_asm_labels
1773     inline_asm_nonlocal_labels
1774     inline_asm_direct_symbol_refs
1775     pragma_deprecated
1776     rsync_contimeout
1777     symver_asm_label
1778     symver_gnu_asm
1779     vfp_args
1780     xform_asm
1781     xmm_clobbers
1782 "
1783
1784 TYPES_LIST="
1785     CONDITION_VARIABLE_Ptr
1786     socklen_t
1787     struct_addrinfo
1788     struct_group_source_req
1789     struct_ip_mreq_source
1790     struct_ipv6_mreq
1791     struct_pollfd
1792     struct_rusage_ru_maxrss
1793     struct_sctp_event_subscribe
1794     struct_sockaddr_in6
1795     struct_sockaddr_sa_len
1796     struct_sockaddr_storage
1797     struct_stat_st_mtim_tv_nsec
1798     struct_v4l2_frmivalenum_discrete
1799 "
1800
1801 HAVE_LIST="
1802     $ARCH_EXT_LIST
1803     $(add_suffix _external $ARCH_EXT_LIST)
1804     $(add_suffix _inline   $ARCH_EXT_LIST)
1805     $ARCH_FEATURES
1806     $ATOMICS_LIST
1807     $BUILTIN_LIST
1808     $HAVE_LIST_CMDLINE
1809     $HAVE_LIST_PUB
1810     $HEADERS_LIST
1811     $INTRINSICS_LIST
1812     $MATH_FUNCS
1813     $SYSTEM_FUNCS
1814     $THREADS_LIST
1815     $TOOLCHAIN_FEATURES
1816     $TYPES_LIST
1817     atomics_native
1818     dos_paths
1819     dxva2api_cobj
1820     dxva2_lib
1821     libc_msvcrt
1822     libdc1394_1
1823     libdc1394_2
1824     makeinfo
1825     makeinfo_html
1826     perl
1827     pod2man
1828     sdl
1829     texi2html
1830     threads
1831     vdpau_x11
1832     xlib
1833 "
1834
1835 # options emitted with CONFIG_ prefix but not available on the command line
1836 CONFIG_EXTRA="
1837     aandcttables
1838     ac3dsp
1839     audio_frame_queue
1840     audiodsp
1841     blockdsp
1842     bswapdsp
1843     cabac
1844     dvprofile
1845     exif
1846     faandct
1847     faanidct
1848     fdctdsp
1849     frame_thread_encoder
1850     gcrypt
1851     golomb
1852     gplv3
1853     h263dsp
1854     h264chroma
1855     h264dsp
1856     h264pred
1857     h264qpel
1858     hpeldsp
1859     huffman
1860     huffyuvdsp
1861     huffyuvencdsp
1862     idctdsp
1863     iirfilter
1864     intrax8
1865     lgplv3
1866     llauddsp
1867     llviddsp
1868     lpc
1869     me_cmp
1870     mpeg_er
1871     mpegaudio
1872     mpegaudiodsp
1873     mpegvideo
1874     mpegvideoenc
1875     nettle
1876     pixblockdsp
1877     qpeldsp
1878     rangecoder
1879     riffdec
1880     riffenc
1881     rtpdec
1882     rtpenc_chain
1883     sinewin
1884     startcode
1885     tpeldsp
1886     videodsp
1887     vp3dsp
1888     wma_freqs
1889 "
1890
1891 CMDLINE_SELECT="
1892     $ARCH_EXT_LIST
1893     $CONFIG_LIST
1894     $HAVE_LIST_CMDLINE
1895     $THREADS_LIST
1896     asm
1897     cross_compile
1898     debug
1899     extra_warnings
1900     logging
1901     lto
1902     optimizations
1903     rpath
1904     stripping
1905 "
1906
1907 PATHS_LIST="
1908     bindir
1909     datadir
1910     docdir
1911     incdir
1912     libdir
1913     mandir
1914     prefix
1915     shlibdir
1916 "
1917
1918 CMDLINE_SET="
1919     $PATHS_LIST
1920     ar
1921     arch
1922     as
1923     assert_level
1924     build_suffix
1925     cc
1926     cpu
1927     cross_prefix
1928     cxx
1929     dep_cc
1930     doxygen
1931     extra_version
1932     gas
1933     host_cc
1934     host_cflags
1935     host_ld
1936     host_ldflags
1937     host_libs
1938     host_os
1939     install
1940     ld
1941     logfile
1942     malloc_prefix
1943     nm
1944     optflags
1945     pkg_config
1946     pkg_config_flags
1947     progs_suffix
1948     random_seed
1949     ranlib
1950     samples
1951     strip
1952     sws_max_filter_size
1953     sysinclude
1954     sysroot
1955     target_exec
1956     target_os
1957     target_path
1958     target_samples
1959     tempprefix
1960     toolchain
1961     valgrind
1962     yasmexe
1963 "
1964
1965 CMDLINE_APPEND="
1966     extra_cflags
1967     extra_cxxflags
1968     host_cppflags
1969 "
1970
1971 # code dependency declarations
1972
1973 # architecture extensions
1974
1975 armv5te_deps="arm"
1976 armv6_deps="arm"
1977 armv6t2_deps="arm"
1978 armv8_deps="aarch64"
1979 neon_deps_any="aarch64 arm"
1980 intrinsics_neon_deps="neon"
1981 vfp_deps_any="aarch64 arm"
1982 vfpv3_deps="vfp"
1983 setend_deps="arm"
1984
1985 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1986
1987 mipsfpu_deps="mips"
1988 mips32r2_deps="mips"
1989 mipsdspr1_deps="mips"
1990 mipsdspr2_deps="mips"
1991
1992 altivec_deps="ppc"
1993 ppc4xx_deps="ppc"
1994 vsx_deps="ppc"
1995
1996 cpunop_deps="i686"
1997 x86_64_select="i686"
1998 x86_64_suggest="fast_cmov"
1999
2000 amd3dnow_deps="mmx"
2001 amd3dnowext_deps="amd3dnow"
2002 i686_deps="x86"
2003 mmx_deps="x86"
2004 mmxext_deps="mmx"
2005 sse_deps="mmxext"
2006 sse2_deps="sse"
2007 sse3_deps="sse2"
2008 ssse3_deps="sse3"
2009 sse4_deps="ssse3"
2010 sse42_deps="sse4"
2011 avx_deps="sse42"
2012 xop_deps="avx"
2013 fma3_deps="avx"
2014 fma4_deps="avx"
2015 avx2_deps="avx"
2016
2017 mmx_external_deps="yasm"
2018 mmx_inline_deps="inline_asm"
2019 mmx_suggest="mmx_external mmx_inline"
2020
2021 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2022     eval dep=\$${ext}_deps
2023     eval ${ext}_external_deps='"${dep}_external"'
2024     eval ${ext}_inline_deps='"${dep}_inline"'
2025     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2026 done
2027
2028 aligned_stack_if_any="aarch64 ppc x86"
2029 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2030 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2031 fast_unaligned_if_any="aarch64 ppc x86"
2032 simd_align_16_if_any="altivec neon sse"
2033
2034 # system capabilities
2035
2036 symver_if_any="symver_asm_label symver_gnu_asm"
2037
2038 # threading support
2039 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2040 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2041 atomics_win32_if="MemoryBarrier"
2042 atomics_native_if_any="$ATOMICS_LIST"
2043 w32threads_deps="atomics_native"
2044 threads_if_any="$THREADS_LIST"
2045
2046 # subsystems
2047 dct_select="rdft"
2048 error_resilience_select="me_cmp"
2049 faandct_deps="faan fdctdsp"
2050 faanidct_deps="faan idctdsp"
2051 frame_thread_encoder_deps="encoders threads"
2052 intrax8_select="error_resilience"
2053 mdct_select="fft"
2054 rdft_select="fft"
2055 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2056 mpeg_er_select="error_resilience"
2057 mpegaudio_select="mpegaudiodsp"
2058 mpegaudiodsp_select="dct"
2059 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2060 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2061
2062 # decoders / encoders
2063 aac_decoder_select="mdct sinewin"
2064 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2065 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2066 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2067 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2068 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2069 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2070 aic_decoder_select="golomb idctdsp"
2071 alac_encoder_select="lpc"
2072 als_decoder_select="bswapdsp"
2073 amrnb_decoder_select="lsp"
2074 amrwb_decoder_select="lsp"
2075 amv_decoder_select="sp5x_decoder exif"
2076 amv_encoder_select="aandcttables mpegvideoenc"
2077 ape_decoder_select="bswapdsp llauddsp"
2078 apng_decoder_select="zlib"
2079 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2080 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2081 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2082 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2083 atrac1_decoder_select="mdct sinewin"
2084 atrac3_decoder_select="mdct"
2085 atrac3p_decoder_select="mdct sinewin"
2086 avrn_decoder_select="exif"
2087 bink_decoder_select="blockdsp hpeldsp"
2088 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2089 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2090 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2091 cllc_decoder_select="bswapdsp"
2092 comfortnoise_encoder_select="lpc"
2093 cook_decoder_select="audiodsp mdct sinewin"
2094 cscd_decoder_select="lzo"
2095 cscd_decoder_suggest="zlib"
2096 dca_decoder_select="mdct"
2097 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2098 dnxhd_decoder_select="blockdsp idctdsp"
2099 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2100 dvvideo_decoder_select="dvprofile idctdsp"
2101 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2102 dxa_decoder_select="zlib"
2103 eac3_decoder_select="ac3_decoder"
2104 eac3_encoder_select="ac3_encoder"
2105 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2106 eatgq_decoder_select="aandcttables"
2107 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2108 exr_decoder_select="zlib"
2109 ffv1_decoder_select="golomb rangecoder"
2110 ffv1_encoder_select="rangecoder"
2111 ffvhuff_decoder_select="huffyuv_decoder"
2112 ffvhuff_encoder_select="huffyuv_encoder"
2113 fic_decoder_select="golomb"
2114 flac_decoder_select="golomb"
2115 flac_encoder_select="bswapdsp golomb lpc"
2116 flashsv_decoder_select="zlib"
2117 flashsv_encoder_select="zlib"
2118 flashsv2_encoder_select="zlib"
2119 flashsv2_decoder_select="zlib"
2120 flv_decoder_select="h263_decoder"
2121 flv_encoder_select="h263_encoder"
2122 fourxm_decoder_select="blockdsp bswapdsp"
2123 fraps_decoder_select="bswapdsp huffman"
2124 g2m_decoder_select="blockdsp idctdsp zlib"
2125 g729_decoder_select="audiodsp"
2126 h261_decoder_select="mpeg_er mpegvideo"
2127 h261_encoder_select="aandcttables mpegvideoenc"
2128 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2129 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2130 h263i_decoder_select="h263_decoder"
2131 h263p_encoder_select="h263_encoder"
2132 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2133 h264_decoder_suggest="error_resilience"
2134 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2135 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2136 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2137 iac_decoder_select="imc_decoder"
2138 imc_decoder_select="bswapdsp fft mdct sinewin"
2139 indeo3_decoder_select="hpeldsp"
2140 interplay_video_decoder_select="hpeldsp"
2141 jpegls_decoder_select="golomb mjpeg_decoder"
2142 jpegls_encoder_select="golomb"
2143 jv_decoder_select="blockdsp"
2144 lagarith_decoder_select="huffyuvdsp"
2145 ljpeg_encoder_select="aandcttables idctdsp"
2146 loco_decoder_select="golomb"
2147 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2148 metasound_decoder_select="lsp mdct sinewin"
2149 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2150 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2151 mjpeg_encoder_select="aandcttables mpegvideoenc"
2152 mjpegb_decoder_select="mjpeg_decoder"
2153 mlp_decoder_select="mlp_parser"
2154 motionpixels_decoder_select="bswapdsp"
2155 mp1_decoder_select="mpegaudio"
2156 mp1float_decoder_select="mpegaudio"
2157 mp2_decoder_select="mpegaudio"
2158 mp2float_decoder_select="mpegaudio"
2159 mp3_decoder_select="mpegaudio"
2160 mp3adu_decoder_select="mpegaudio"
2161 mp3adufloat_decoder_select="mpegaudio"
2162 mp3float_decoder_select="mpegaudio"
2163 mp3on4_decoder_select="mpegaudio"
2164 mp3on4float_decoder_select="mpegaudio"
2165 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2166 mpc8_decoder_select="mpegaudiodsp"
2167 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2168 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2169 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2170 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2171 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2172 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2173 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2174 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2175 mpeg4_encoder_select="h263_encoder"
2176 msmpeg4v1_decoder_select="h263_decoder"
2177 msmpeg4v2_decoder_select="h263_decoder"
2178 msmpeg4v2_encoder_select="h263_encoder"
2179 msmpeg4v3_decoder_select="h263_decoder"
2180 msmpeg4v3_encoder_select="h263_encoder"
2181 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2182 mxpeg_decoder_select="mjpeg_decoder"
2183 nellymoser_decoder_select="mdct sinewin"
2184 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2185 nuv_decoder_select="idctdsp lzo"
2186 on2avc_decoder_select="mdct"
2187 opus_decoder_deps="swresample"
2188 png_decoder_select="zlib"
2189 png_encoder_select="huffyuvencdsp zlib"
2190 prores_decoder_select="blockdsp idctdsp"
2191 prores_encoder_select="fdctdsp"
2192 qcelp_decoder_select="lsp"
2193 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2194 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2195 ra_144_decoder_select="audiodsp"
2196 ralf_decoder_select="golomb"
2197 rawvideo_decoder_select="bswapdsp"
2198 rtjpeg_decoder_select="me_cmp"
2199 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2200 rv10_encoder_select="h263_encoder"
2201 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2202 rv20_encoder_select="h263_encoder"
2203 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2204 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2205 shorten_decoder_select="golomb"
2206 sipr_decoder_select="lsp"
2207 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2208 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2209 sonic_decoder_select="golomb rangecoder"
2210 sonic_encoder_select="golomb rangecoder"
2211 sonic_ls_encoder_select="golomb rangecoder"
2212 sp5x_decoder_select="mjpeg_decoder"
2213 svq1_decoder_select="hpeldsp"
2214 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2215 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2216 svq3_decoder_suggest="zlib"
2217 tak_decoder_select="audiodsp"
2218 theora_decoder_select="vp3_decoder"
2219 thp_decoder_select="mjpeg_decoder"
2220 tiff_decoder_suggest="zlib lzma"
2221 tiff_encoder_suggest="zlib"
2222 truehd_decoder_select="mlp_parser"
2223 truemotion2_decoder_select="bswapdsp"
2224 truespeech_decoder_select="bswapdsp"
2225 tscc_decoder_select="zlib"
2226 twinvq_decoder_select="mdct lsp sinewin"
2227 utvideo_decoder_select="bswapdsp"
2228 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2229 vble_decoder_select="huffyuvdsp"
2230 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2231 vc1image_decoder_select="vc1_decoder"
2232 vorbis_decoder_select="mdct"
2233 vorbis_encoder_select="mdct"
2234 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2235 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2236 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2237 vp6a_decoder_select="vp6_decoder"
2238 vp6f_decoder_select="vp6_decoder"
2239 vp7_decoder_select="h264pred videodsp"
2240 vp8_decoder_select="h264pred videodsp"
2241 vp9_decoder_select="videodsp vp9_parser"
2242 webp_decoder_select="vp8_decoder"
2243 wmalossless_decoder_select="llauddsp"
2244 wmapro_decoder_select="mdct sinewin wma_freqs"
2245 wmav1_decoder_select="mdct sinewin wma_freqs"
2246 wmav1_encoder_select="mdct sinewin wma_freqs"
2247 wmav2_decoder_select="mdct sinewin wma_freqs"
2248 wmav2_encoder_select="mdct sinewin wma_freqs"
2249 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2250 wmv1_decoder_select="h263_decoder"
2251 wmv1_encoder_select="h263_encoder"
2252 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2253 wmv2_encoder_select="h263_encoder"
2254 wmv3_decoder_select="vc1_decoder"
2255 wmv3image_decoder_select="wmv3_decoder"
2256 zerocodec_decoder_select="zlib"
2257 zlib_decoder_select="zlib"
2258 zlib_encoder_select="zlib"
2259 zmbv_decoder_select="zlib"
2260 zmbv_encoder_select="zlib"
2261
2262 # hardware accelerators
2263 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2264 dxva2_deps="dxva2api_h"
2265 vaapi_deps="va_va_h"
2266 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2267 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2268 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2269 xvmc_deps="X11_extensions_XvMClib_h"
2270
2271 h263_vaapi_hwaccel_deps="vaapi"
2272 h263_vaapi_hwaccel_select="h263_decoder"
2273 h263_vdpau_hwaccel_deps="vdpau"
2274 h263_vdpau_hwaccel_select="h263_decoder"
2275 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2276 h264_dxva2_hwaccel_deps="dxva2"
2277 h264_dxva2_hwaccel_select="h264_decoder"
2278 h264_vaapi_hwaccel_deps="vaapi"
2279 h264_vaapi_hwaccel_select="h264_decoder"
2280 h264_vda_decoder_deps="vda"
2281 h264_vda_decoder_select="h264_decoder"
2282 h264_vda_hwaccel_deps="vda"
2283 h264_vda_hwaccel_select="h264_decoder"
2284 h264_vda_old_hwaccel_deps="vda"
2285 h264_vda_old_hwaccel_select="h264_decoder"
2286 h264_vdpau_decoder_deps="vdpau"
2287 h264_vdpau_decoder_select="h264_decoder"
2288 h264_vdpau_hwaccel_deps="vdpau"
2289 h264_vdpau_hwaccel_select="h264_decoder"
2290 mpeg_vdpau_decoder_deps="vdpau"
2291 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2292 mpeg_xvmc_hwaccel_deps="xvmc"
2293 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2294 mpeg1_vdpau_decoder_deps="vdpau"
2295 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2296 mpeg1_vdpau_hwaccel_deps="vdpau"
2297 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2298 mpeg1_xvmc_hwaccel_deps="xvmc"
2299 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2300 mpeg2_crystalhd_decoder_select="crystalhd"
2301 mpeg2_dxva2_hwaccel_deps="dxva2"
2302 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2303 mpeg2_vaapi_hwaccel_deps="vaapi"
2304 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2305 mpeg2_vdpau_hwaccel_deps="vdpau"
2306 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2307 mpeg2_xvmc_hwaccel_deps="xvmc"
2308 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2309 mpeg4_crystalhd_decoder_select="crystalhd"
2310 mpeg4_vaapi_hwaccel_deps="vaapi"
2311 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2312 mpeg4_vdpau_decoder_deps="vdpau"
2313 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2314 mpeg4_vdpau_hwaccel_deps="vdpau"
2315 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2316 msmpeg4_crystalhd_decoder_select="crystalhd"
2317 vc1_crystalhd_decoder_select="crystalhd"
2318 vc1_dxva2_hwaccel_deps="dxva2"
2319 vc1_dxva2_hwaccel_select="vc1_decoder"
2320 vc1_vaapi_hwaccel_deps="vaapi"
2321 vc1_vaapi_hwaccel_select="vc1_decoder"
2322 vc1_vdpau_decoder_deps="vdpau"
2323 vc1_vdpau_decoder_select="vc1_decoder"
2324 vc1_vdpau_hwaccel_deps="vdpau"
2325 vc1_vdpau_hwaccel_select="vc1_decoder"
2326 wmv3_crystalhd_decoder_select="crystalhd"
2327 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2328 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2329 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2330 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2331
2332 # parsers
2333 h264_parser_select="h264_decoder"
2334 hevc_parser_select="hevc_decoder"
2335 mpegvideo_parser_select="mpegvideo"
2336 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2337 vc1_parser_select="mpegvideo startcode vc1_decoder"
2338
2339 # external libraries
2340 libaacplus_encoder_deps="libaacplus"
2341 libcelt_decoder_deps="libcelt"
2342 libfaac_encoder_deps="libfaac"
2343 libfaac_encoder_select="audio_frame_queue"
2344 libfdk_aac_decoder_deps="libfdk_aac"
2345 libfdk_aac_encoder_deps="libfdk_aac"
2346 libfdk_aac_encoder_select="audio_frame_queue"
2347 libgme_demuxer_deps="libgme"
2348 libgsm_decoder_deps="libgsm"
2349 libgsm_encoder_deps="libgsm"
2350 libgsm_ms_decoder_deps="libgsm"
2351 libgsm_ms_encoder_deps="libgsm"
2352 libilbc_decoder_deps="libilbc"
2353 libilbc_encoder_deps="libilbc"
2354 libmodplug_demuxer_deps="libmodplug"
2355 libmp3lame_encoder_deps="libmp3lame"
2356 libmp3lame_encoder_select="audio_frame_queue"
2357 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2358 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2359 libopencore_amrnb_encoder_select="audio_frame_queue"
2360 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2361 libopenjpeg_decoder_deps="libopenjpeg"
2362 libopenjpeg_encoder_deps="libopenjpeg"
2363 libopus_decoder_deps="libopus"
2364 libopus_encoder_deps="libopus"
2365 libopus_encoder_select="audio_frame_queue"
2366 libquvi_demuxer_deps="libquvi"
2367 libschroedinger_decoder_deps="libschroedinger"
2368 libschroedinger_encoder_deps="libschroedinger"
2369 libshine_encoder_deps="libshine"
2370 libshine_encoder_select="audio_frame_queue"
2371 libspeex_decoder_deps="libspeex"
2372 libspeex_encoder_deps="libspeex"
2373 libspeex_encoder_select="audio_frame_queue"
2374 libstagefright_h264_decoder_deps="libstagefright_h264"
2375 libtheora_encoder_deps="libtheora"
2376 libtwolame_encoder_deps="libtwolame"
2377 libvo_aacenc_encoder_deps="libvo_aacenc"
2378 libvo_aacenc_encoder_select="audio_frame_queue"
2379 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2380 libvorbis_decoder_deps="libvorbis"
2381 libvorbis_encoder_deps="libvorbis"
2382 libvorbis_encoder_select="audio_frame_queue"
2383 libvpx_vp8_decoder_deps="libvpx"
2384 libvpx_vp8_encoder_deps="libvpx"
2385 libvpx_vp9_decoder_deps="libvpx"
2386 libvpx_vp9_encoder_deps="libvpx"
2387 libwavpack_encoder_deps="libwavpack"
2388 libwebp_encoder_deps="libwebp"
2389 libx264_encoder_deps="libx264"
2390 libx264rgb_encoder_deps="libx264"
2391 libx265_encoder_deps="libx265"
2392 libxavs_encoder_deps="libxavs"
2393 libxvid_encoder_deps="libxvid"
2394 libutvideo_decoder_deps="libutvideo"
2395 libutvideo_encoder_deps="libutvideo"
2396 libzvbi_teletext_decoder_deps="libzvbi"
2397
2398 # demuxers / muxers
2399 ac3_demuxer_select="ac3_parser"
2400 asf_demuxer_select="riffdec"
2401 asf_muxer_select="riffenc"
2402 asf_stream_muxer_select="asf_muxer"
2403 avi_demuxer_select="riffdec exif"
2404 avi_muxer_select="riffenc"
2405 avisynth_demuxer_deps="avisynth"
2406 avisynth_demuxer_select="riffdec"
2407 caf_demuxer_select="riffdec"
2408 dash_muxer_select="mp4_muxer"
2409 dirac_demuxer_select="dirac_parser"
2410 dts_demuxer_select="dca_parser"
2411 dtshd_demuxer_select="dca_parser"
2412 dv_demuxer_select="dvprofile"
2413 dv_muxer_select="dvprofile"
2414 dxa_demuxer_select="riffdec"
2415 eac3_demuxer_select="ac3_parser"
2416 f4v_muxer_select="mov_muxer"
2417 flac_demuxer_select="flac_parser"
2418 hds_muxer_select="flv_muxer"
2419 hls_muxer_select="mpegts_muxer"
2420 image2_alias_pix_demuxer_select="image2_demuxer"
2421 image2_brender_pix_demuxer_select="image2_demuxer"
2422 ipod_muxer_select="mov_muxer"
2423 ismv_muxer_select="mov_muxer"
2424 libnut_demuxer_deps="libnut"
2425 libnut_muxer_deps="libnut"
2426 matroska_audio_muxer_select="matroska_muxer"
2427 matroska_demuxer_select="riffdec"
2428 matroska_demuxer_suggest="bzlib lzo zlib"
2429 matroska_muxer_select="riffenc"
2430 mmf_muxer_select="riffenc"
2431 mov_demuxer_select="riffdec"
2432 mov_demuxer_suggest="zlib"
2433 mov_muxer_select="riffenc rtpenc_chain ac3_parser"
2434 mp3_demuxer_select="mpegaudio_parser"
2435 mp4_muxer_select="mov_muxer"
2436 mpegts_muxer_select="adts_muxer latm_muxer"
2437 mpegtsraw_demuxer_select="mpegts_demuxer"
2438 mxf_d10_muxer_select="mxf_muxer"
2439 nut_muxer_select="riffenc"
2440 nuv_demuxer_select="riffdec"
2441 oga_muxer_select="ogg_muxer"
2442 ogg_demuxer_select="golomb"
2443 opus_muxer_select="ogg_muxer"
2444 psp_muxer_select="mov_muxer"
2445 rtp_demuxer_select="sdp_demuxer"
2446 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2447 rtsp_demuxer_select="http_protocol rtpdec"
2448 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2449 sap_demuxer_select="sdp_demuxer"
2450 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2451 sdp_demuxer_select="rtpdec"
2452 smoothstreaming_muxer_select="ismv_muxer"
2453 spdif_muxer_select="aac_parser"
2454 spx_muxer_select="ogg_muxer"
2455 tak_demuxer_select="tak_parser"
2456 tg2_muxer_select="mov_muxer"
2457 tgp_muxer_select="mov_muxer"
2458 vobsub_demuxer_select="mpegps_demuxer"
2459 w64_demuxer_select="wav_demuxer"
2460 w64_muxer_select="wav_muxer"
2461 wav_demuxer_select="riffdec"
2462 wav_muxer_select="riffenc"
2463 webm_muxer_select="riffenc"
2464 wtv_demuxer_select="riffdec"
2465 wtv_muxer_select="riffenc"
2466 xmv_demuxer_select="riffdec"
2467 xwma_demuxer_select="riffdec"
2468
2469 # indevs / outdevs
2470 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2471 alsa_outdev_deps="alsa_asoundlib_h"
2472 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2473 avfoundation_indev_select="avfoundation"
2474 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2475 caca_outdev_deps="libcaca"
2476 decklink_outdev_deps="decklink pthreads"
2477 decklink_outdev_extralibs="-lstdc++"
2478 decklink_indev_deps="decklink pthreads"
2479 decklink_indev_extralibs="-lstdc++"
2480 dshow_indev_deps="IBaseFilter"
2481 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2482 dv1394_indev_deps="dv1394"
2483 dv1394_indev_select="dv_demuxer"
2484 fbdev_indev_deps="linux_fb_h"
2485 fbdev_outdev_deps="linux_fb_h"
2486 gdigrab_indev_deps="CreateDIBSection"
2487 gdigrab_indev_extralibs="-lgdi32"
2488 gdigrab_indev_select="bmp_decoder"
2489 iec61883_indev_deps="libiec61883"
2490 jack_indev_deps="jack_jack_h sem_timedwait"
2491 lavfi_indev_deps="avfilter"
2492 libcdio_indev_deps="libcdio"
2493 libdc1394_indev_deps="libdc1394"
2494 libv4l2_indev_deps="libv4l2"
2495 openal_indev_deps="openal"
2496 opengl_outdev_deps="opengl"
2497 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2498 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2499 pulse_indev_deps="libpulse"
2500 pulse_outdev_deps="libpulse"
2501 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2502 qtkit_indev_select="qtkit"
2503 sdl_outdev_deps="sdl"
2504 sndio_indev_deps="sndio_h"
2505 sndio_outdev_deps="sndio_h"
2506 v4l_indev_deps="linux_videodev_h"
2507 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2508 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2509 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2510 vfwcap_indev_extralibs="-lavicap32"
2511 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2512 xv_outdev_extralibs="-lXv -lX11 -lXext"
2513 x11grab_indev_deps="x11grab"
2514 x11grab_xcb_indev_deps="libxcb"
2515
2516 # protocols
2517 bluray_protocol_deps="libbluray"
2518 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2519 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2520 ffrtmpcrypt_protocol_select="tcp_protocol"
2521 ffrtmphttp_protocol_deps="!librtmp_protocol"
2522 ffrtmphttp_protocol_select="http_protocol"
2523 ftp_protocol_select="tcp_protocol"
2524 gopher_protocol_select="network"
2525 http_protocol_select="tcp_protocol"
2526 httpproxy_protocol_select="tcp_protocol"
2527 https_protocol_select="tls_protocol"
2528 icecast_protocol_select="http_protocol"
2529 librtmp_protocol_deps="librtmp"
2530 librtmpe_protocol_deps="librtmp"
2531 librtmps_protocol_deps="librtmp"
2532 librtmpt_protocol_deps="librtmp"
2533 librtmpte_protocol_deps="librtmp"
2534 libsmbclient_protocol_deps="libsmbclient gplv3"
2535 libssh_protocol_deps="libssh"
2536 mmsh_protocol_select="http_protocol"
2537 mmst_protocol_select="network"
2538 rtmp_protocol_deps="!librtmp_protocol"
2539 rtmp_protocol_select="tcp_protocol"
2540 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2541 rtmps_protocol_deps="!librtmp_protocol"
2542 rtmps_protocol_select="tls_protocol"
2543 rtmpt_protocol_select="ffrtmphttp_protocol"
2544 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2545 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2546 rtp_protocol_select="udp_protocol"
2547 sctp_protocol_deps="struct_sctp_event_subscribe"
2548 sctp_protocol_select="network"
2549 srtp_protocol_select="rtp_protocol"
2550 tcp_protocol_select="network"
2551 tls_protocol_deps_any="openssl gnutls"
2552 tls_protocol_select="tcp_protocol"
2553 udp_protocol_select="network"
2554 udplite_protocol_select="network"
2555 unix_protocol_deps="sys_un_h"
2556 unix_protocol_select="network"
2557
2558 # filters
2559 amovie_filter_deps="avcodec avformat"
2560 aresample_filter_deps="swresample"
2561 ass_filter_deps="libass"
2562 asyncts_filter_deps="avresample"
2563 atempo_filter_deps="avcodec"
2564 atempo_filter_select="rdft"
2565 azmq_filter_deps="libzmq"
2566 blackframe_filter_deps="gpl"
2567 boxblur_filter_deps="gpl"
2568 bs2b_filter_deps="libbs2b"
2569 colormatrix_filter_deps="gpl"
2570 cropdetect_filter_deps="gpl"
2571 delogo_filter_deps="gpl"
2572 deshake_filter_select="pixelutils"
2573 drawtext_filter_deps="libfreetype"
2574 ebur128_filter_deps="gpl"
2575 flite_filter_deps="libflite"
2576 frei0r_filter_deps="frei0r dlopen"
2577 frei0r_src_filter_deps="frei0r dlopen"
2578 geq_filter_deps="gpl"
2579 histeq_filter_deps="gpl"
2580 hqdn3d_filter_deps="gpl"
2581 interlace_filter_deps="gpl"
2582 kerndeint_filter_deps="gpl"
2583 ladspa_filter_deps="ladspa dlopen"
2584 mcdeint_filter_deps="avcodec gpl"
2585 movie_filter_deps="avcodec avformat"
2586 mp_filter_deps="gpl avcodec swscale"
2587 mpdecimate_filter_deps="gpl"
2588 mpdecimate_filter_select="pixelutils"
2589 mptestsrc_filter_deps="gpl"
2590 negate_filter_deps="lut_filter"
2591 perspective_filter_deps="gpl"
2592 ocv_filter_deps="libopencv"
2593 owdenoise_filter_deps="gpl"
2594 pan_filter_deps="swresample"
2595 phase_filter_deps="gpl"
2596 pp_filter_deps="gpl postproc"
2597 pullup_filter_deps="gpl"
2598 removelogo_filter_deps="avcodec avformat swscale"
2599 resample_filter_deps="avresample"
2600 sab_filter_deps="gpl swscale"
2601 scale_filter_deps="swscale"
2602 select_filter_select="pixelutils"
2603 smartblur_filter_deps="gpl swscale"
2604 showspectrum_filter_deps="avcodec"
2605 showspectrum_filter_select="rdft"
2606 spp_filter_deps="gpl avcodec"
2607 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2608 stereo3d_filter_deps="gpl"
2609 subtitles_filter_deps="avformat avcodec libass"
2610 super2xsai_filter_deps="gpl"
2611 tinterlace_filter_deps="gpl"
2612 vidstabdetect_filter_deps="libvidstab"
2613 vidstabtransform_filter_deps="libvidstab"
2614 pixfmts_super2xsai_test_deps="super2xsai_filter"
2615 tinterlace_merge_test_deps="tinterlace_filter"
2616 tinterlace_pad_test_deps="tinterlace_filter"
2617 zmq_filter_deps="libzmq"
2618 zoompan_filter_deps="swscale"
2619
2620 # examples
2621 avio_reading="avformat avcodec avutil"
2622 avcodec_example_deps="avcodec avutil"
2623 decoding_encoding_example_deps="avcodec avformat avutil"
2624 demuxing_decoding_example_deps="avcodec avformat avutil"
2625 extract_mvs_example_deps="avcodec avformat avutil"
2626 filter_audio_example_deps="avfilter avutil"
2627 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2628 filtering_video_example_deps="avfilter avcodec avformat avutil"
2629 metadata_example_deps="avformat avutil"
2630 muxing_example_deps="avcodec avformat avutil swscale"
2631 remuxing_example_deps="avcodec avformat avutil"
2632 resampling_audio_example_deps="avutil swresample"
2633 scaling_video_example_deps="avutil swscale"
2634 transcode_aac_example_deps="avcodec avformat swresample"
2635 transcoding_example_deps="avfilter avcodec avformat avutil"
2636
2637 # libraries, in linking order
2638 avcodec_deps="avutil"
2639 avdevice_deps="avformat avcodec avutil"
2640 avfilter_deps="avutil"
2641 avformat_deps="avcodec avutil"
2642 avresample_deps="avutil"
2643 postproc_deps="avutil gpl"
2644 swresample_deps="avutil"
2645 swscale_deps="avutil"
2646
2647 # programs
2648 ffmpeg_deps="avcodec avfilter avformat swresample"
2649 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2650                null_filter
2651                setpts_filter trim_filter"
2652 ffplay_deps="avcodec avformat swscale swresample sdl"
2653 ffplay_libs='$sdl_libs'
2654 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2655 ffprobe_deps="avcodec avformat"
2656 ffserver_deps="avformat fork sarestart"
2657 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2658
2659 # documentation
2660 podpages_deps="perl"
2661 manpages_deps="perl pod2man"
2662 htmlpages_deps="perl"
2663 htmlpages_deps_any="makeinfo_html texi2html"
2664 txtpages_deps="perl makeinfo"
2665 doc_deps_any="manpages htmlpages podpages txtpages"
2666
2667 # default parameters
2668
2669 logfile="config.log"
2670
2671 # installation paths
2672 prefix_default="/usr/local"
2673 bindir_default='${prefix}/bin'
2674 datadir_default='${prefix}/share/ffmpeg'
2675 docdir_default='${prefix}/share/doc/ffmpeg'
2676 incdir_default='${prefix}/include'
2677 libdir_default='${prefix}/lib'
2678 mandir_default='${prefix}/share/man'
2679 shlibdir_default="$libdir_default"
2680
2681 # toolchain
2682 ar_default="ar"
2683 cc_default="gcc"
2684 cxx_default="g++"
2685 host_cc_default="gcc"
2686 cp_f="cp -f"
2687 doxygen_default="doxygen"
2688 install="install"
2689 ln_s="ln -s -f"
2690 nm_default="nm -g"
2691 objformat="elf"
2692 pkg_config_default=pkg-config
2693 ranlib_default="ranlib"
2694 strip_default="strip"
2695 yasmexe_default="yasm"
2696 windres_default="windres"
2697
2698 # OS
2699 target_os_default=$(tolower $(uname -s))
2700 host_os=$target_os_default
2701
2702 # machine
2703 if test "$target_os_default" = aix; then
2704     arch_default=$(uname -p)
2705     strip_default="strip -X32_64"
2706 else
2707     arch_default=$(uname -m)
2708 fi
2709 cpu="generic"
2710 intrinsics="none"
2711
2712 # configurable options
2713 enable $PROGRAM_LIST
2714 enable $DOCUMENT_LIST
2715 enable $EXAMPLE_LIST
2716 enable $(filter_out avresample $LIBRARY_LIST)
2717 enable stripping
2718
2719 enable asm
2720 enable debug
2721 enable doc
2722 enable faan faandct faanidct
2723 enable optimizations
2724 enable runtime_cpudetect
2725 enable safe_bitstream_reader
2726 enable static
2727 enable swscale_alpha
2728
2729 sws_max_filter_size_default=256
2730 set_default sws_max_filter_size
2731
2732 # Enable hwaccels by default.
2733 enable dxva2 vaapi vda vdpau xvmc
2734 enable xlib
2735
2736 # build settings
2737 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2738 LIBPREF="lib"
2739 LIBSUF=".a"
2740 FULLNAME='$(NAME)$(BUILDSUF)'
2741 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2742 SLIBPREF="lib"
2743 SLIBSUF=".so"
2744 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2745 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2746 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2747 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2748 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2749 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2750
2751 asflags_filter=echo
2752 cflags_filter=echo
2753 ldflags_filter=echo
2754
2755 AS_C='-c'
2756 AS_O='-o $@'
2757 CC_C='-c'
2758 CC_E='-E -o $@'
2759 CC_O='-o $@'
2760 CXX_C='-c'
2761 CXX_O='-o $@'
2762 LD_O='-o $@'
2763 LD_LIB='-l%'
2764 LD_PATH='-L'
2765 HOSTCC_C='-c'
2766 HOSTCC_E='-E -o $@'
2767 HOSTCC_O='-o $@'
2768 HOSTLD_O='-o $@'
2769
2770 host_libs='-lm'
2771 host_cflags_filter=echo
2772 host_ldflags_filter=echo
2773
2774 target_path='$(CURDIR)'
2775
2776 # since the object filename is not given with the -MM flag, the compiler
2777 # is only able to print the basename, and we must add the path ourselves
2778 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2779 DEPFLAGS='-MM'
2780
2781 # find source path
2782 if test -f configure; then
2783     source_path=.
2784 else
2785     source_path=$(cd $(dirname "$0"); pwd)
2786     echo "$source_path" | grep -q '[[:blank:]]' &&
2787         die "Out of tree builds are impossible with whitespace in source path."
2788     test -e "$source_path/config.h" &&
2789         die "Out of tree builds are impossible with config.h in source dir."
2790 fi
2791
2792 for v in "$@"; do
2793     r=${v#*=}
2794     l=${v%"$r"}
2795     r=$(sh_quote "$r")
2796     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2797 done
2798
2799 find_things(){
2800     thing=$1
2801     pattern=$2
2802     file=$source_path/$3
2803     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2804 }
2805
2806 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2807 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2808 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2809 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2810 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2811 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2812 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2813 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2814 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2815 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2816 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2817
2818 ALL_COMPONENTS="
2819     $BSF_LIST
2820     $DECODER_LIST
2821     $DEMUXER_LIST
2822     $ENCODER_LIST
2823     $FILTER_LIST
2824     $HWACCEL_LIST
2825     $INDEV_LIST
2826     $MUXER_LIST
2827     $OUTDEV_LIST
2828     $PARSER_LIST
2829     $PROTOCOL_LIST
2830 "
2831
2832 for n in $COMPONENT_LIST; do
2833     v=$(toupper ${n%s})_LIST
2834     eval enable \$$v
2835     eval ${n}_if_any="\$$v"
2836 done
2837
2838 enable $ARCH_EXT_LIST
2839
2840 die_unknown(){
2841     echo "Unknown option \"$1\"."
2842     echo "See $0 --help for available options."
2843     exit 1
2844 }
2845
2846 print_3_columns() {
2847     cat | tr ' ' '\n' | sort | pr -r -3 -t
2848 }
2849
2850 show_list() {
2851     suffix=_$1
2852     shift
2853     echo $* | sed s/$suffix//g | print_3_columns
2854     exit 0
2855 }
2856
2857 rand_list(){
2858     IFS=', '
2859     set -- $*
2860     unset IFS
2861     for thing; do
2862         comp=${thing%:*}
2863         prob=${thing#$comp}
2864         prob=${prob#:}
2865         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2866         echo "prob ${prob:-0.5}"
2867         printf '%s\n' $comp
2868     done
2869 }
2870
2871 do_random(){
2872     action=$1
2873     shift
2874     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2875     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2876 }
2877
2878 for opt do
2879     optval="${opt#*=}"
2880     case "$opt" in
2881         --extra-ldflags=*)
2882             add_ldflags $optval
2883         ;;
2884         --extra-ldexeflags=*)
2885             add_ldexeflags $optval
2886         ;;
2887         --extra-libs=*)
2888             add_extralibs $optval
2889         ;;
2890         --disable-devices)
2891             disable $INDEV_LIST $OUTDEV_LIST
2892         ;;
2893         --enable-debug=*)
2894             debuglevel="$optval"
2895         ;;
2896         --disable-programs)
2897             disable $PROGRAM_LIST
2898         ;;
2899         --disable-everything)
2900             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2901         ;;
2902         --disable-all)
2903             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2904             disable $LIBRARY_LIST $PROGRAM_LIST doc
2905         ;;
2906         --enable-random|--disable-random)
2907             action=${opt%%-random}
2908             do_random ${action#--} $COMPONENT_LIST
2909         ;;
2910         --enable-random=*|--disable-random=*)
2911             action=${opt%%-random=*}
2912             do_random ${action#--} $optval
2913         ;;
2914         --enable-*=*|--disable-*=*)
2915             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2916             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2917             eval list=\$$(toupper $thing)_LIST
2918             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2919             list=$(filter "$name" $list)
2920             [ "$list" = "" ] && warn "Option $opt did not match anything"
2921             $action $list
2922         ;;
2923         --enable-?*|--disable-?*)
2924             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2925             if is_in $option $COMPONENT_LIST; then
2926                 test $action = disable && action=unset
2927                 eval $action \$$(toupper ${option%s})_LIST
2928             elif is_in $option $CMDLINE_SELECT; then
2929                 $action $option
2930             else
2931                 die_unknown $opt
2932             fi
2933         ;;
2934         --list-*)
2935             NAME="${opt#--list-}"
2936             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2937             NAME=${NAME%s}
2938             eval show_list $NAME \$$(toupper $NAME)_LIST
2939         ;;
2940         --help|-h) show_help
2941         ;;
2942         --fatal-warnings) enable fatal_warnings
2943         ;;
2944         *)
2945             optname="${opt%%=*}"
2946             optname="${optname#--}"
2947             optname=$(echo "$optname" | sed 's/-/_/g')
2948             if is_in $optname $CMDLINE_SET; then
2949                 eval $optname='$optval'
2950             elif is_in $optname $CMDLINE_APPEND; then
2951                 append $optname "$optval"
2952             else
2953                 die_unknown $opt
2954             fi
2955         ;;
2956     esac
2957 done
2958
2959 disabled logging && logfile=/dev/null
2960
2961 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2962 set >> $logfile
2963
2964 test -n "$cross_prefix" && enable cross_compile
2965
2966 if enabled cross_compile; then
2967     test -n "$arch" && test -n "$target_os" ||
2968         die "Must specify target arch and OS when cross-compiling"
2969 fi
2970
2971 ar_default="${cross_prefix}${ar_default}"
2972 cc_default="${cross_prefix}${cc_default}"
2973 cxx_default="${cross_prefix}${cxx_default}"
2974 nm_default="${cross_prefix}${nm_default}"
2975 pkg_config_default="${cross_prefix}${pkg_config_default}"
2976 ranlib_default="${cross_prefix}${ranlib_default}"
2977 strip_default="${cross_prefix}${strip_default}"
2978 windres_default="${cross_prefix}${windres_default}"
2979
2980 sysinclude_default="${sysroot}/usr/include"
2981
2982 test -n "$valgrind" && toolchain="valgrind-memcheck"
2983
2984 case "$toolchain" in
2985     clang-asan)
2986         cc_default="clang"
2987         add_cflags  -fsanitize=address
2988         add_ldflags -fsanitize=address
2989     ;;
2990     clang-tsan)
2991         cc_default="clang"
2992         add_cflags  -fsanitize=thread -pie
2993         add_ldflags -fsanitize=thread -pie
2994     ;;
2995     clang-usan)
2996         cc_default="clang"
2997         add_cflags  -fsanitize=undefined
2998         add_ldflags -fsanitize=undefined
2999     ;;
3000     gcc-asan)
3001         cc_default="gcc"
3002         add_cflags  -fsanitize=address
3003         add_ldflags -fsanitize=address
3004     ;;
3005     gcc-tsan)
3006         cc_default="gcc"
3007         add_cflags  -fsanitize=thread -pie -fPIC
3008         add_ldflags -fsanitize=thread -pie -fPIC
3009     ;;
3010     gcc-usan)
3011         cc_default="gcc"
3012         add_cflags  -fsanitize=undefined
3013         add_ldflags -fsanitize=undefined
3014     ;;
3015     valgrind-massif)
3016         target_exec_default=${valgrind:-"valgrind"}
3017         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3018     ;;
3019     valgrind-memcheck)
3020         target_exec_default=${valgrind:-"valgrind"}
3021         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3022     ;;
3023     msvc)
3024         # Check whether the current MSVC version needs the C99 converter.
3025         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3026         # support enough of C99 to build ffmpeg. Default to the new
3027         # behaviour if the regexp was unable to match anything, since this
3028         # successfully parses the version number of existing supported
3029         # versions that require the converter (MSVC 2010 and 2012).
3030         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3031         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3032             cc_default="cl"
3033         else
3034             cc_default="c99wrap cl"
3035         fi
3036         ld_default="link"
3037         nm_default="dumpbin -symbols"
3038         ar_default="lib"
3039         target_os_default="win32"
3040         # Use a relative path for TMPDIR. This makes sure all the
3041         # ffconf temp files are written with a relative path, avoiding
3042         # issues with msys/win32 path conversion for MSVC parameters
3043         # such as -Fo<file> or -out:<file>.
3044         TMPDIR=.
3045     ;;
3046     icl)
3047         cc_default="icl"
3048         ld_default="xilink"
3049         nm_default="dumpbin -symbols"
3050         ar_default="xilib"
3051         target_os_default="win32"
3052         TMPDIR=.
3053     ;;
3054     gcov)
3055         add_cflags  -fprofile-arcs -ftest-coverage
3056         add_ldflags -fprofile-arcs -ftest-coverage
3057     ;;
3058     hardened)
3059         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3060         add_cflags   -fno-strict-overflow -fstack-protector-all
3061         add_ldflags  -Wl,-z,relro -Wl,-z,now
3062     ;;
3063     ?*)
3064         die "Unknown toolchain $toolchain"
3065     ;;
3066 esac
3067
3068 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3069     target_exec target_os yasmexe
3070 enabled cross_compile || host_cc_default=$cc
3071 set_default host_cc
3072
3073 pkg_config_fail_message=""
3074 if ! $pkg_config --version >/dev/null 2>&1; then
3075     warn "$pkg_config not found, library detection may fail."
3076     pkg_config=false
3077 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3078     pkg_config_fail_message="
3079 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3080 fi
3081
3082 if test $doxygen != $doxygen_default && \
3083   ! $doxygen --version >/dev/null 2>&1; then
3084     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3085 fi
3086
3087 exesuf() {
3088     case $1 in
3089         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3090     esac
3091 }
3092
3093 EXESUF=$(exesuf $target_os)
3094 HOSTEXESUF=$(exesuf $host_os)
3095
3096 # set temporary file name
3097 : ${TMPDIR:=$TEMPDIR}
3098 : ${TMPDIR:=$TMP}
3099 : ${TMPDIR:=/tmp}
3100
3101 if [ -n "$tempprefix" ] ; then
3102     mktemp(){
3103         echo $tempprefix.${HOSTNAME}.${UID}
3104     }
3105 elif ! check_cmd mktemp -u XXXXXX; then
3106     # simple replacement for missing mktemp
3107     # NOT SAFE FOR GENERAL USE
3108     mktemp(){
3109         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3110     }
3111 fi
3112
3113 tmpfile(){
3114     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3115         (set -C; exec > $tmp) 2>/dev/null ||
3116         die "Unable to create temporary file in $TMPDIR."
3117     append TMPFILES $tmp
3118     eval $1=$tmp
3119 }
3120
3121 trap 'rm -f -- $TMPFILES' EXIT
3122
3123 tmpfile TMPASM .asm
3124 tmpfile TMPC   .c
3125 tmpfile TMPCPP .cpp
3126 tmpfile TMPE   $EXESUF
3127 tmpfile TMPH   .h
3128 tmpfile TMPM   .m
3129 tmpfile TMPO   .o
3130 tmpfile TMPS   .S
3131 tmpfile TMPSH  .sh
3132 tmpfile TMPV   .ver
3133
3134 unset -f mktemp
3135
3136 chmod +x $TMPE
3137
3138 # make sure we can execute files in $TMPDIR
3139 cat > $TMPSH 2>> $logfile <<EOF
3140 #! /bin/sh
3141 EOF
3142 chmod +x $TMPSH >> $logfile 2>&1
3143 if ! $TMPSH >> $logfile 2>&1; then
3144     cat <<EOF
3145 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3146 variable to another directory and make sure that it is not mounted noexec.
3147 EOF
3148     die "Sanity test failed."
3149 fi
3150
3151 armasm_flags(){
3152     for flag; do
3153         case $flag in
3154             # Filter out MSVC cl.exe options from cflags that shouldn't
3155             # be passed to gas-preprocessor
3156             -M[TD]*)                                            ;;
3157             *)                  echo $flag                      ;;
3158         esac
3159    done
3160 }
3161
3162 ccc_flags(){
3163     for flag; do
3164         case $flag in
3165             -std=c99)           echo -c99                       ;;
3166             -mcpu=*)            echo -arch ${flag#*=}           ;;
3167             -mieee)             echo -ieee                      ;;
3168             -O*|-fast)          echo $flag                      ;;
3169             -fno-math-errno)    echo -assume nomath_errno       ;;
3170             -g)                 echo -g3                        ;;
3171             -Wall)              echo -msg_enable level2         ;;
3172             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3173             -Wl,*)              echo $flag                      ;;
3174             -f*|-W*)                                            ;;
3175             *)                  echo $flag                      ;;
3176         esac
3177    done
3178 }
3179
3180 cparser_flags(){
3181     for flag; do
3182         case $flag in
3183             -Wno-switch)             echo -Wno-switch-enum ;;
3184             -Wno-format-zero-length) ;;
3185             -Wdisabled-optimization) ;;
3186             -Wno-pointer-sign)       echo -Wno-other ;;
3187             *)                       echo $flag ;;
3188         esac
3189     done
3190 }
3191
3192 msvc_common_flags(){
3193     for flag; do
3194         case $flag in
3195             # In addition to specifying certain flags under the compiler
3196             # specific filters, they must be specified here as well or else the
3197             # generic catch all at the bottom will print the original flag.
3198             -Wall)                ;;
3199             -std=c99)             ;;
3200             # Common flags
3201             -fomit-frame-pointer) ;;
3202             -g)                   echo -Z7 ;;
3203             -fno-math-errno)      ;;
3204             -fno-common)          ;;
3205             -fno-signed-zeros)    ;;
3206             -fPIC)                ;;
3207             -mthumb)              ;;
3208             -march=*)             ;;
3209             -lz)                  echo zlib.lib ;;
3210             -lavifil32)           echo vfw32.lib ;;
3211             -lavicap32)           echo vfw32.lib user32.lib ;;
3212             -l*)                  echo ${flag#-l}.lib ;;
3213             *)                    echo $flag ;;
3214         esac
3215     done
3216 }
3217
3218 msvc_flags(){
3219     msvc_common_flags "$@"
3220     for flag; do
3221         case $flag in
3222             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3223                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3224                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3225                                        -wd4554 \
3226                                        -wd4273 -wd4701 ;;
3227         esac
3228     done
3229 }
3230
3231 icl_flags(){
3232     msvc_common_flags "$@"
3233     for flag; do
3234         case $flag in
3235             # Despite what Intel's documentation says -Wall, which is supported
3236             # on Windows, does enable remarks so disable them here.
3237             -Wall)                echo $flag -Qdiag-disable:remark ;;
3238             -std=c99)             echo -Qstd=c99 ;;
3239             -flto)                echo -ipo ;;
3240         esac
3241     done
3242 }
3243
3244 icc_flags(){
3245     for flag; do
3246         case $flag in
3247             -flto)                echo -ipo ;;
3248             *)                    echo $flag ;;
3249         esac
3250     done
3251 }
3252
3253 pgi_flags(){
3254     for flag; do
3255         case $flag in
3256             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3257             -fomit-frame-pointer) echo -Mnoframe ;;
3258             -g)                   echo -gopt ;;
3259             *)                    echo $flag ;;
3260         esac
3261     done
3262 }
3263
3264 suncc_flags(){
3265     for flag; do
3266         case $flag in
3267             -march=*|-mcpu=*)
3268                 case "${flag#*=}" in
3269                     native)                   echo -xtarget=native       ;;
3270                     v9|niagara)               echo -xarch=sparc          ;;
3271                     ultrasparc)               echo -xarch=sparcvis       ;;
3272                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3273                     i586|pentium)             echo -xchip=pentium        ;;
3274                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3275                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3276                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3277                     pentium4*)          echo -xtarget=pentium4           ;;
3278                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3279                     *-sse3)             echo -xarch=sse3                 ;;
3280                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3281                     bonnell)                   echo -xarch=ssse3         ;;
3282                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3283                     westmere)                  echo -xtarget=westmere    ;;
3284                     silvermont)                echo -xarch=sse4_2        ;;
3285                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3286                     core-avx*|ivybridge|haswell|broadwell)
3287                                                echo -xarch=avx           ;;
3288                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3289                     btver1)                    echo -xarch=amdsse4a      ;;
3290                     btver2|bdver*)             echo -xarch=avx           ;;
3291                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3292                     k8|opteron|athlon64|athlon-fx)
3293                                                echo -xarch=sse2a         ;;
3294                     athlon*)                   echo -xarch=pentium_proa  ;;
3295                 esac
3296                 ;;
3297             -std=c99)             echo -xc99              ;;
3298             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3299             -fPIC)                echo -KPIC -xcode=pic32 ;;
3300             -W*,*)                echo $flag              ;;
3301             -f*-*|-W*|-mimpure-text)                      ;;
3302             -shared)              echo -G                 ;;
3303             *)                    echo $flag              ;;
3304         esac
3305     done
3306 }
3307
3308 tms470_flags(){
3309     for flag; do
3310         case $flag in
3311             -march=*|-mcpu=*)
3312                 case "${flag#*=}" in
3313                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3314                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3315                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3316                     armv6*|arm11*)          echo -mv=6   ;;
3317                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3318                                             echo -mv=5e  ;;
3319                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3320                 esac
3321                 ;;
3322             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3323             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3324             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3325             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3326             -msoft-float)   echo --float_support=vfplib       ;;
3327             -O[0-3]|-mf=*)  echo $flag                        ;;
3328             -g)             echo -g -mn                       ;;
3329             -pds=*)         echo $flag                        ;;
3330             -D*|-I*)        echo $flag                        ;;
3331             --gcc|--abi=*)  echo $flag                        ;;
3332             -me)            echo $flag                        ;;
3333         esac
3334     done
3335 }
3336
3337 probe_cc(){
3338     pfx=$1
3339     _cc=$2
3340
3341     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3342     unset _ld_o _ldflags _ld_lib _ld_path
3343     unset _depflags _DEPCMD _DEPFLAGS
3344     _flags_filter=echo
3345
3346     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3347         true # no-op to avoid reading stdin in following checks
3348     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3349         _type=llvm_gcc
3350         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3351         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3352         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3353         _cflags_speed='-O3'
3354         _cflags_size='-Os'
3355     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3356         _type=gcc
3357         gcc_version=$($_cc --version | head -n1)
3358         gcc_basever=$($_cc -dumpversion)
3359         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3360         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3361         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3362         if ! $_cc -dumpversion | grep -q '^2\.'; then
3363             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3364         fi
3365         _cflags_speed='-O3'
3366         _cflags_size='-Os'
3367     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3368         _type=icc
3369         _ident=$($_cc --version | head -n1)
3370         _depflags='-MMD'
3371         _cflags_speed='-O3'
3372         _cflags_size='-Os'
3373         _cflags_noopt='-O1'
3374         _flags_filter=icc_flags
3375     elif $_cc -v 2>&1 | grep -q xlc; then
3376         _type=xlc
3377         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3378         _cflags_speed='-O5'
3379         _cflags_size='-O5 -qcompact'
3380     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3381         _type=ccc
3382         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3383         _DEPFLAGS='-M'
3384         _cflags_speed='-fast'
3385         _cflags_size='-O1'
3386         _flags_filter=ccc_flags
3387     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3388         test -d "$sysroot" || die "No valid sysroot specified."
3389         _type=armcc
3390         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3391         armcc_conf="$PWD/armcc.conf"
3392         $_cc --arm_linux_configure                 \
3393              --arm_linux_config_file="$armcc_conf" \
3394              --configure_sysroot="$sysroot"        \
3395              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3396              die "Error creating armcc configuration file."
3397         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3398         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3399         as_default="${cross_prefix}gcc"
3400         _depflags='-MMD'
3401         _cflags_speed='-O3'
3402         _cflags_size='-Os'
3403     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3404         _type=tms470
3405         _ident=$($_cc -version | head -n1 | tr -s ' ')
3406         _flags='--gcc --abi=eabi -me'
3407         _cc_e='-ppl -fe=$@'
3408         _cc_o='-fe=$@'
3409         _depflags='-ppa -ppd=$(@:.o=.d)'
3410         _cflags_speed='-O3 -mf=5'
3411         _cflags_size='-O3 -mf=2'
3412         _flags_filter=tms470_flags
3413     elif $_cc -v 2>&1 | grep -q clang; then
3414         _type=clang
3415         _ident=$($_cc --version | head -n1)
3416         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3417         _cflags_speed='-O3'
3418         _cflags_size='-Os'
3419     elif $_cc -V 2>&1 | grep -q Sun; then
3420         _type=suncc
3421         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3422         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3423         _DEPFLAGS='-xM1 -xc99'
3424         _ldflags='-std=c99'
3425         _cflags_speed='-O5'
3426         _cflags_size='-O5 -xspace'
3427         _flags_filter=suncc_flags
3428     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3429         _type=pathscale
3430         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3431         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3432         _cflags_speed='-O2'
3433         _cflags_size='-Os'
3434         _flags_filter='filter_out -Wdisabled-optimization'
3435     elif $_cc -v 2>&1 | grep -q Open64; then
3436         _type=open64
3437         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3438         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3439         _cflags_speed='-O2'
3440         _cflags_size='-Os'
3441         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3442     elif $_cc -V 2>&1 | grep -q Portland; then
3443         _type=pgi
3444         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3445         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3446         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3447         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3448         _cflags_noopt="-O"
3449         _flags_filter=pgi_flags
3450     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3451         _type=armasm
3452         _ident=$($_cc | head -n1)
3453         # 4509: "This form of conditional instruction is deprecated"
3454         _flags="-nologo -ignore 4509"
3455         _flags_filter=armasm_flags
3456     elif $_cc 2>&1 | grep -q Intel; then
3457         _type=icl
3458         _ident=$($cc 2>&1 | head -n1)
3459         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3460         # Not only is O3 broken on 13.x+ but it is slower on all previous
3461         # versions (tested) as well.
3462         _cflags_speed="-O2"
3463         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3464         if $_cc 2>&1 | grep -q Linker; then
3465             _ld_o='-out:$@'
3466         else
3467             _ld_o='-Fe$@'
3468         fi
3469         _cc_o='-Fo$@'
3470         _cc_e='-P'
3471         _flags_filter=icl_flags
3472         _ld_lib='lib%.a'
3473         _ld_path='-libpath:'
3474         # -Qdiag-error to make icl error when seeing certain unknown arguments
3475         _flags='-nologo -Qdiag-error:4044,10157'
3476         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3477         # with MSVC which enables it by default.
3478         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3479         if [ $pfx = hostcc ]; then
3480             append _cflags -Dsnprintf=_snprintf
3481         fi
3482         disable stripping
3483     elif $_cc 2>&1 | grep -q Microsoft; then
3484         _type=msvc
3485         _ident=$($cc 2>&1 | head -n1)
3486         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3487         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3488         _cflags_speed="-O2"
3489         _cflags_size="-O1"
3490         if $_cc 2>&1 | grep -q Linker; then
3491             _ld_o='-out:$@'
3492         else
3493             _ld_o='-Fe$@'
3494         fi
3495         _cc_o='-Fo$@'
3496         _cc_e='-P -Fi$@'
3497         _flags_filter=msvc_flags
3498         _ld_lib='lib%.a'
3499         _ld_path='-libpath:'
3500         _flags='-nologo'
3501         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3502         if [ $pfx = hostcc ]; then
3503             append _cflags -Dsnprintf=_snprintf
3504         fi
3505         disable stripping
3506     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3507         _type=cparser
3508         _ident=$($_cc --version | head -n1)
3509         _depflags='-MMD'
3510         _cflags_speed='-O4'
3511         _cflags_size='-O2'
3512         _flags_filter=cparser_flags
3513     fi
3514
3515     eval ${pfx}_type=\$_type
3516     eval ${pfx}_ident=\$_ident
3517 }
3518
3519 set_ccvars(){
3520     eval ${1}_C=\${_cc_c-\${${1}_C}}
3521     eval ${1}_E=\${_cc_e-\${${1}_E}}
3522     eval ${1}_O=\${_cc_o-\${${1}_O}}
3523
3524     if [ -n "$_depflags" ]; then
3525         eval ${1}_DEPFLAGS=\$_depflags
3526     else
3527         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3528         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3529         eval DEP${1}FLAGS=\$_flags
3530     fi
3531 }
3532
3533 probe_cc cc "$cc"
3534 cflags_filter=$_flags_filter
3535 cflags_speed=$_cflags_speed
3536 cflags_size=$_cflags_size
3537 cflags_noopt=$_cflags_noopt
3538 add_cflags $_flags $_cflags
3539 cc_ldflags=$_ldflags
3540 set_ccvars CC
3541
3542 probe_cc hostcc "$host_cc"
3543 host_cflags_filter=$_flags_filter
3544 add_host_cflags  $_flags $_cflags
3545 set_ccvars HOSTCC
3546
3547 test -n "$cc_type" && enable $cc_type ||
3548     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3549
3550 : ${as_default:=$cc}
3551 : ${dep_cc_default:=$cc}
3552 : ${ld_default:=$cc}
3553 : ${host_ld_default:=$host_cc}
3554 set_default ar as dep_cc ld host_ld windres
3555
3556 probe_cc as "$as"
3557 asflags_filter=$_flags_filter
3558 add_asflags $_flags $_cflags
3559 set_ccvars AS
3560
3561 probe_cc ld "$ld"
3562 ldflags_filter=$_flags_filter
3563 add_ldflags $_flags $_ldflags
3564 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3565 LD_O=${_ld_o-$LD_O}
3566 LD_LIB=${_ld_lib-$LD_LIB}
3567 LD_PATH=${_ld_path-$LD_PATH}
3568
3569 probe_cc hostld "$host_ld"
3570 host_ldflags_filter=$_flags_filter
3571 add_host_ldflags $_flags $_ldflags
3572 HOSTLD_O=${_ld_o-$HOSTLD_O}
3573
3574 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3575     probe_cc depcc "$dep_cc"
3576     CCDEP=${_DEPCMD:-$DEPCMD}
3577     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3578     DEPCCFLAGS=$_flags
3579 fi
3580
3581 if $ar 2>&1 | grep -q Microsoft; then
3582     arflags="-nologo"
3583     ar_o='-out:$@'
3584 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3585     arflags="rq"
3586     ar_o='$@'
3587 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3588     arflags='-Xany -r -c'
3589     ar_o='$@'
3590 else
3591     arflags="rc"
3592     ar_o='$@'
3593 fi
3594
3595 add_cflags $extra_cflags
3596 add_cxxflags $extra_cxxflags
3597 add_asflags $extra_cflags
3598
3599 if test -n "$sysroot"; then
3600     case "$cc_type" in
3601         gcc|llvm_gcc|clang)
3602             add_cppflags --sysroot="$sysroot"
3603             add_ldflags --sysroot="$sysroot"
3604 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3605             add_cppflags -isysroot "$sysroot"
3606             add_ldflags -isysroot "$sysroot"
3607         ;;
3608         tms470)
3609             add_cppflags -I"$sysinclude"
3610             add_ldflags  --sysroot="$sysroot"
3611         ;;
3612     esac
3613 fi
3614
3615 if test "$cpu" = host; then
3616     enabled cross_compile &&
3617         die "--cpu=host makes no sense when cross-compiling."
3618
3619     case "$cc_type" in
3620         gcc|llvm_gcc)
3621             check_native(){
3622                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3623                 sed -n "/cc1.*$1=/{
3624                             s/.*$1=\\([^ ]*\\).*/\\1/
3625                             p
3626                             q
3627                         }" $TMPE
3628             }
3629             cpu=$(check_native -march || check_native -mcpu)
3630         ;;
3631     esac
3632
3633     test "${cpu:-host}" = host &&
3634         die "--cpu=host not supported with compiler $cc"
3635 fi
3636
3637 # Deal with common $arch aliases
3638 case "$arch" in
3639     aarch64|arm64)
3640         arch="aarch64"
3641     ;;
3642     arm*|iPad*|iPhone*)
3643         arch="arm"
3644     ;;
3645     mips*|IP*)
3646         arch="mips"
3647     ;;
3648     parisc*|hppa*)
3649         arch="parisc"
3650     ;;
3651     "Power Macintosh"|ppc*|powerpc*)
3652         arch="ppc"
3653     ;;
3654     s390|s390x)
3655         arch="s390"
3656     ;;
3657     sh4|sh)
3658         arch="sh4"
3659     ;;
3660     sun4u|sparc*)
3661         arch="sparc"
3662     ;;
3663     tilegx|tile-gx)
3664         arch="tilegx"
3665     ;;
3666     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3667         arch="x86"
3668     ;;
3669 esac
3670
3671 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3672 enable $arch
3673
3674 # Add processor-specific flags
3675 if enabled aarch64; then
3676
3677     case $cpu in
3678         armv*)
3679             cpuflags="-march=$cpu"
3680         ;;
3681         *)
3682             cpuflags="-mcpu=$cpu"
3683         ;;
3684     esac
3685
3686 elif enabled alpha; then
3687
3688     cpuflags="-mcpu=$cpu"
3689
3690 elif enabled arm; then
3691
3692     check_arm_arch() {
3693         check_cpp_condition stddef.h \
3694             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3695             $cpuflags
3696     }
3697
3698     probe_arm_arch() {
3699         if   check_arm_arch 4;        then echo armv4;
3700         elif check_arm_arch 4T;       then echo armv4t;
3701         elif check_arm_arch 5;        then echo armv5;
3702         elif check_arm_arch 5E;       then echo armv5e;
3703         elif check_arm_arch 5T;       then echo armv5t;
3704         elif check_arm_arch 5TE;      then echo armv5te;
3705         elif check_arm_arch 5TEJ;     then echo armv5te;
3706         elif check_arm_arch 6;        then echo armv6;
3707         elif check_arm_arch 6J;       then echo armv6j;
3708         elif check_arm_arch 6K;       then echo armv6k;
3709         elif check_arm_arch 6Z;       then echo armv6z;
3710         elif check_arm_arch 6ZK;      then echo armv6zk;
3711         elif check_arm_arch 6T2;      then echo armv6t2;
3712         elif check_arm_arch 7;        then echo armv7;
3713         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3714         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3715         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3716         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3717         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3718         fi
3719     }
3720
3721     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3722
3723     case $cpu in
3724         armv*)
3725             cpuflags="-march=$cpu"
3726             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3727         ;;
3728         *)
3729             cpuflags="-mcpu=$cpu"
3730             case $cpu in
3731                 cortex-a*)                               subarch=armv7a  ;;
3732                 cortex-r*)                               subarch=armv7r  ;;
3733                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3734                 arm11*)                                  subarch=armv6   ;;
3735                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3736                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3737                 *)                             subarch=$(probe_arm_arch) ;;
3738             esac
3739         ;;
3740     esac
3741
3742     case "$subarch" in
3743         armv5t*)    enable fast_clz                ;;
3744         armv[6-8]*)
3745             enable fast_clz
3746             disabled fast_unaligned || enable fast_unaligned
3747             ;;
3748     esac
3749
3750 elif enabled avr32; then
3751
3752     case $cpu in
3753         ap7[02]0[0-2])
3754             subarch="avr32_ap"
3755             cpuflags="-mpart=$cpu"
3756         ;;
3757         ap)
3758             subarch="avr32_ap"
3759             cpuflags="-march=$cpu"
3760         ;;
3761         uc3[ab]*)
3762             subarch="avr32_uc"
3763             cpuflags="-mcpu=$cpu"
3764         ;;
3765         uc)
3766             subarch="avr32_uc"
3767             cpuflags="-march=$cpu"
3768         ;;
3769     esac
3770
3771 elif enabled bfin; then
3772
3773     cpuflags="-mcpu=$cpu"
3774
3775 elif enabled mips; then
3776
3777     cpuflags="-march=$cpu"
3778
3779     case $cpu in
3780         24kc)
3781             disable mipsfpu
3782             disable mipsdspr1
3783             disable mipsdspr2
3784         ;;
3785         24kf*)
3786             disable mipsdspr1
3787             disable mipsdspr2
3788         ;;
3789         24kec|34kc|1004kc)
3790             disable mipsfpu
3791             disable mipsdspr2
3792         ;;
3793         24kef*|34kf*|1004kf*)
3794             disable mipsdspr2
3795         ;;
3796         74kc)
3797             disable mipsfpu
3798         ;;
3799     esac
3800
3801 elif enabled ppc; then
3802
3803     disable ldbrx
3804     disable vsx
3805
3806     case $(tolower $cpu) in
3807         601|ppc601|powerpc601)
3808             cpuflags="-mcpu=601"
3809             disable altivec
3810         ;;
3811         603*|ppc603*|powerpc603*)
3812             cpuflags="-mcpu=603"
3813             disable altivec
3814         ;;
3815         604*|ppc604*|powerpc604*)
3816             cpuflags="-mcpu=604"
3817             disable altivec
3818         ;;
3819         g3|75*|ppc75*|powerpc75*)
3820             cpuflags="-mcpu=750"
3821             disable altivec
3822         ;;
3823         g4|745*|ppc745*|powerpc745*)
3824             cpuflags="-mcpu=7450"
3825         ;;
3826         74*|ppc74*|powerpc74*)
3827             cpuflags="-mcpu=7400"
3828         ;;
3829         g5|970|ppc970|powerpc970)
3830             cpuflags="-mcpu=970"
3831         ;;
3832         power[3-8]*)
3833             cpuflags="-mcpu=$cpu"
3834         ;;
3835         cell)
3836             cpuflags="-mcpu=cell"
3837             enable ldbrx
3838         ;;
3839         e500mc)
3840             cpuflags="-mcpu=e500mc"
3841             disable altivec
3842         ;;
3843         e500v2)
3844             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3845             disable altivec
3846             disable dcbzl
3847         ;;
3848         e500)
3849             cpuflags="-mcpu=8540 -mhard-float"
3850             disable altivec
3851             disable dcbzl
3852         ;;
3853     esac
3854
3855 elif enabled sparc; then
3856
3857     case $cpu in
3858         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3859             cpuflags="-mcpu=$cpu"
3860         ;;
3861         ultrasparc*|niagara[234])
3862             cpuflags="-mcpu=$cpu"
3863         ;;
3864     esac
3865
3866 elif enabled x86; then
3867
3868     case $cpu in
3869         i[345]86|pentium)
3870             cpuflags="-march=$cpu"
3871             disable i686
3872             disable mmx
3873         ;;
3874         # targets that do NOT support nopl and conditional mov (cmov)
3875         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3876             cpuflags="-march=$cpu"
3877             disable i686
3878         ;;
3879         # targets that do support nopl and conditional mov (cmov)
3880         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3881         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3882             cpuflags="-march=$cpu"
3883             enable i686
3884             enable fast_cmov
3885         ;;
3886         # targets that do support conditional mov but on which it's slow
3887         pentium4|pentium4m|prescott|nocona)
3888             cpuflags="-march=$cpu"
3889             enable i686
3890             disable fast_cmov
3891         ;;
3892     esac
3893
3894 fi
3895
3896 if [ "$cpu" != generic ]; then
3897     add_cflags  $cpuflags
3898     add_asflags $cpuflags
3899 fi
3900
3901 # compiler sanity check
3902 check_exec <<EOF
3903 int main(void){ return 0; }
3904 EOF
3905 if test "$?" != 0; then
3906     echo "$cc is unable to create an executable file."
3907     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3908         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3909         echo "Only do this if you know what cross compiling means."
3910     fi
3911     die "C compiler test failed."
3912 fi
3913
3914 add_cppflags -D_ISOC99_SOURCE
3915 add_cxxflags -D__STDC_CONSTANT_MACROS
3916 check_cflags -std=c99
3917 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3918 #include <stdlib.h>
3919 EOF
3920 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3921 #include <stdlib.h>
3922 EOF
3923
3924 add_host_cppflags -D_ISOC99_SOURCE
3925 check_host_cflags -std=c99
3926 check_host_cflags -Wall
3927 check_host_cflags -O3
3928
3929 check_64bit(){
3930     arch32=$1
3931     arch64=$2
3932     expr=$3
3933     check_code cc "" "int test[2*($expr) - 1]" &&
3934         subarch=$arch64 || subarch=$arch32
3935 }
3936
3937 case "$arch" in
3938     aarch64|alpha|ia64)
3939         spic=$shared
3940     ;;
3941     mips)
3942         check_64bit mips mips64 '_MIPS_SIM > 1'
3943         spic=$shared
3944     ;;
3945     parisc)
3946         check_64bit parisc parisc64 'sizeof(void *) > 4'
3947         spic=$shared
3948     ;;
3949     ppc)
3950         check_64bit ppc ppc64 'sizeof(void *) > 4'
3951         spic=$shared
3952     ;;
3953     s390)
3954         check_64bit s390 s390x 'sizeof(void *) > 4'
3955         spic=$shared
3956     ;;
3957     sparc)
3958         check_64bit sparc sparc64 'sizeof(void *) > 4'
3959         spic=$shared
3960     ;;
3961     x86)
3962         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3963         # Treat x32 as x64 for now. Note it also needs spic=$shared
3964         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3965             subarch=x86_64
3966         if test "$subarch" = "x86_64"; then
3967             spic=$shared
3968         fi
3969     ;;
3970     ppc)
3971         check_cc <<EOF && subarch="ppc64"
3972         int test[(int)sizeof(char*) - 7];
3973 EOF
3974     ;;
3975 esac
3976
3977 enable $subarch
3978 enabled spic && enable_weak pic
3979
3980 # OS specific
3981 case $target_os in
3982     aix)
3983         SHFLAGS=-shared
3984         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3985         enabled shared && add_ldflags -Wl,-brtl
3986         ;;
3987     android)
3988         disable symver
3989         SLIB_INSTALL_NAME='$(SLIBNAME)'
3990         SLIB_INSTALL_LINKS=
3991         # soname not set on purpose
3992         SHFLAGS=-shared
3993         ;;
3994     haiku)
3995         prefix_default="/boot/common"
3996         network_extralibs="-lnetwork"
3997         host_libs=
3998         ;;
3999     sunos)
4000         SHFLAGS='-shared -Wl,-h,$$(@F)'
4001         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4002         network_extralibs="-lsocket -lnsl"
4003         # When using suncc to build, the Solaris linker will mark
4004         # an executable with each instruction set encountered by
4005         # the Solaris assembler.  As our libraries contain their own
4006         # guards for processor-specific code, instead suppress
4007         # generation of the HWCAPS ELF section on Solaris x86 only.
4008         enabled_all suncc x86 &&
4009             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4010             add_ldflags -Wl,-M,mapfile
4011         nm_default='nm -P -g'
4012         ;;
4013     netbsd)
4014         disable symver
4015         oss_indev_extralibs="-lossaudio"
4016         oss_outdev_extralibs="-lossaudio"
4017         enabled gcc || check_ldflags -Wl,-zmuldefs
4018         ;;
4019     openbsd|bitrig)
4020         disable symver
4021         SHFLAGS='-shared'
4022         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4023         SLIB_INSTALL_LINKS=
4024         oss_indev_extralibs="-lossaudio"
4025         oss_outdev_extralibs="-lossaudio"
4026         ;;
4027     dragonfly)
4028         disable symver
4029         ;;
4030     freebsd)
4031         ;;
4032     bsd/os)
4033         add_extralibs -lpoll -lgnugetopt
4034         strip="strip -d"
4035         ;;
4036     darwin)
4037         enabled ppc && add_asflags -force_cpusubtype_ALL
4038         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4039         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4040         strip="${strip} -x"
4041         add_ldflags -Wl,-dynamic,-search_paths_first
4042         SLIBSUF=".dylib"
4043         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4044         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4045         objformat="macho"
4046         enabled x86_64 && objformat="macho64"
4047         enabled_any pic shared ||
4048             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4049         ;;
4050     mingw32*)
4051         if test $target_os = "mingw32ce"; then
4052             disable network
4053         else
4054             target_os=mingw32
4055         fi
4056         LIBTARGET=i386
4057         if enabled x86_64; then
4058             LIBTARGET="i386:x86-64"
4059         elif enabled arm; then
4060             LIBTARGET=arm-wince
4061         fi
4062         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4063         check_ldflags -Wl,--nxcompat
4064         check_ldflags -Wl,--dynamicbase
4065         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4066         shlibdir_default="$bindir_default"
4067         SLIBPREF=""
4068         SLIBSUF=".dll"
4069         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4070         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4071         dlltool="${cross_prefix}dlltool"
4072         if check_cmd lib.exe -list; then
4073             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4074             if enabled x86_64; then
4075                 LIBTARGET=x64
4076             fi
4077         elif check_cmd $dlltool --version; then
4078             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4079         fi
4080         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4081         SLIB_INSTALL_LINKS=
4082         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4083         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4084         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4085         objformat="win32"
4086         ranlib=:
4087         enable dos_paths
4088         ;;
4089     win32|win64)
4090         disable symver
4091         if enabled shared; then
4092             # Link to the import library instead of the normal static library
4093             # for shared libs.
4094             LD_LIB='%.lib'
4095             # Cannot build both shared and static libs with MSVC or icl.
4096             disable static
4097         fi
4098         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4099         shlibdir_default="$bindir_default"
4100         SLIBPREF=""
4101         SLIBSUF=".dll"
4102         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4103         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4104         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4105         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4106         SLIB_INSTALL_LINKS=
4107         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4108         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4109         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4110         objformat="win32"
4111         ranlib=:
4112         enable dos_paths
4113         ;;
4114     cygwin*)
4115         target_os=cygwin
4116         shlibdir_default="$bindir_default"
4117         SLIBPREF="cyg"
4118         SLIBSUF=".dll"
4119         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4120         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4121         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4122         SLIB_INSTALL_LINKS=
4123         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4124         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4125         objformat="win32"
4126         enable dos_paths
4127         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4128         ;;
4129     *-dos|freedos|opendos)
4130         network_extralibs="-lsocket"
4131         objformat="coff"
4132         enable dos_paths
4133         add_cppflags -U__STRICT_ANSI__
4134         ;;
4135     linux)
4136         enable dv1394
4137         ;;
4138     irix*)
4139         target_os=irix
4140         ranlib="echo ignoring ranlib"
4141         ;;
4142     os/2*)
4143         strip="lxlite -CS"
4144         ln_s="cp -f"
4145         objformat="aout"
4146         add_cppflags -D_GNU_SOURCE
4147         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4148         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4149         LIBSUF="_s.a"
4150         SLIBPREF=""
4151         SLIBSUF=".dll"
4152         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4153         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4154         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4155             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4156             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4157             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4158             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4159             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4160         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4161             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4162         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4163         enable dos_paths
4164         enable_weak os2threads
4165         ;;
4166     gnu/kfreebsd)
4167         add_cppflags -D_BSD_SOURCE
4168         ;;
4169     gnu)
4170         ;;
4171     qnx)
4172         add_cppflags -D_QNX_SOURCE
4173         network_extralibs="-lsocket"
4174         ;;
4175     symbian)
4176         SLIBSUF=".dll"
4177         enable dos_paths
4178         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4179         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4180         add_ldflags -Wl,--target1-abs,--no-undefined \
4181                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4182                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4183         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4184                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4185                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4186         ;;
4187     osf1)
4188         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4189         ;;
4190     minix)
4191         ;;
4192     plan9)
4193         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4194                      -D_REENTRANT_SOURCE        \
4195                      -D_RESEARCH_SOURCE         \
4196                      -DFD_SETSIZE=96            \
4197                      -DHAVE_SOCK_OPTS
4198         add_compat strtod.o strtod=avpriv_strtod
4199         network_extralibs='-lbsd'
4200         exeobjs=compat/plan9/main.o
4201         disable ffserver
4202         cp_f='cp'
4203         ;;
4204     none)
4205         ;;
4206     *)
4207         die "Unknown OS '$target_os'."
4208         ;;
4209 esac
4210
4211 # determine libc flavour
4212
4213 probe_libc(){
4214     pfx=$1
4215     pfx_no_=${pfx%_}
4216     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4217     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4218         eval ${pfx}libc_type=uclibc
4219         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4220     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4221         eval ${pfx}libc_type=glibc
4222         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4223     # MinGW headers can be installed on Cygwin, so check for newlib first.
4224     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4225         eval ${pfx}libc_type=newlib
4226         add_${pfx}cppflags -U__STRICT_ANSI__
4227     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4228     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4229         eval ${pfx}libc_type=mingw64
4230         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4231             add_compat msvcrt/snprintf.o
4232             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4233         fi
4234         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4235         eval test \$${pfx_no_}cc_type = "gcc" &&
4236             add_${pfx}cppflags -D__printf__=__gnu_printf__
4237     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4238          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4239         eval ${pfx}libc_type=mingw32
4240         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4241             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4242             die "ERROR: MinGW32 runtime version must be >= 3.15."
4243         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4244         eval test \$${pfx_no_}cc_type = "gcc" &&
4245             add_${pfx}cppflags -D__printf__=__gnu_printf__
4246     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4247         eval ${pfx}libc_type=msvcrt
4248         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4249         # 0x601 by default unless something else is set by the user.
4250         # This can easily lead to us detecting functions only present
4251         # in such new versions and producing binaries requiring windows 7.0.
4252         # Therefore explicitly set the default to XP unless the user has
4253         # set something else on the command line.
4254         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4255             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4256     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4257         eval ${pfx}libc_type=klibc
4258     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4259         eval ${pfx}libc_type=bionic
4260     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4261         eval ${pfx}libc_type=solaris
4262         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4263     fi
4264     check_${pfx}cc <<EOF
4265 #include <time.h>
4266 void *v = localtime_r;
4267 EOF
4268 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4269 #include <time.h>
4270 void *v = localtime_r;
4271 EOF
4272
4273 }
4274
4275 probe_libc
4276 test -n "$libc_type" && enable libc_$libc_type
4277 probe_libc host_
4278 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4279
4280 case $libc_type in
4281     bionic)
4282         add_compat strtod.o strtod=avpriv_strtod
4283         ;;
4284     msvcrt)
4285         add_compat strtod.o strtod=avpriv_strtod
4286         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4287                                      _snprintf=avpriv_snprintf  \
4288                                      vsnprintf=avpriv_vsnprintf
4289         ;;
4290 esac
4291
4292 # hacks for compiler/libc/os combinations
4293
4294 if enabled_all tms470 libc_glibc; then
4295     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4296     add_cppflags -D__USER_LABEL_PREFIX__=
4297     add_cppflags -D__builtin_memset=memset
4298     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4299     add_cflags   -pds=48    # incompatible redefinition of macro
4300 fi
4301
4302 if enabled_all ccc libc_glibc; then
4303     add_ldflags -Wl,-z,now  # calls to libots crash without this
4304 fi
4305
4306 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4307     add_cppflags '-I\$(SRC_PATH)/compat/float'
4308
4309 esc(){
4310     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4311 }
4312
4313 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4314
4315 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4316
4317 set_default $PATHS_LIST
4318 set_default nm
4319
4320 # we need to build at least one lib type
4321 if ! enabled_any static shared; then
4322     cat <<EOF
4323 At least one library type must be built.
4324 Specify --enable-static to build the static libraries or --enable-shared to
4325 build the shared libraries as well. To only build the shared libraries specify
4326 --disable-static in addition to --enable-shared.
4327 EOF
4328     exit 1;
4329 fi
4330
4331 die_license_disabled() {
4332     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4333 }
4334
4335 die_license_disabled_gpl() {
4336     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4337 }
4338
4339 die_license_disabled gpl frei0r
4340 die_license_disabled gpl libcdio
4341 die_license_disabled gpl libsmbclient
4342 die_license_disabled gpl libutvideo
4343 die_license_disabled gpl libvidstab
4344 die_license_disabled gpl libx264
4345 die_license_disabled gpl libx265
4346 die_license_disabled gpl libxavs
4347 die_license_disabled gpl libxvid
4348 die_license_disabled gpl libzvbi
4349 die_license_disabled gpl x11grab
4350
4351 die_license_disabled nonfree libaacplus
4352 die_license_disabled nonfree libfaac
4353 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4354 enabled gpl && die_license_disabled_gpl nonfree openssl
4355
4356 die_license_disabled version3 libopencore_amrnb
4357 die_license_disabled version3 libopencore_amrwb
4358 die_license_disabled version3 libsmbclient
4359 die_license_disabled version3 libvo_aacenc
4360 die_license_disabled version3 libvo_amrwbenc
4361
4362 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4363
4364 disabled optimizations || check_cflags -fomit-frame-pointer
4365
4366 enable_weak_pic() {
4367     disabled pic && return
4368     enable pic
4369     add_cppflags -DPIC
4370     case "$target_os" in
4371     mingw*|cygwin*)
4372         ;;
4373     *)
4374         add_cflags -fPIC
4375         ;;
4376     esac
4377     add_asflags  -fPIC
4378 }
4379
4380 enabled pic && enable_weak_pic
4381
4382 check_cc <<EOF || die "Symbol mangling check failed."
4383 int ff_extern;
4384 EOF
4385 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4386 extern_prefix=${sym%%ff_extern*}
4387
4388 check_cc <<EOF && enable_weak inline_asm
4389 void foo(void) { __asm__ volatile ("" ::); }
4390 EOF
4391
4392 _restrict=
4393 for restrict_keyword in restrict __restrict__ __restrict; do
4394     check_cc <<EOF && _restrict=$restrict_keyword && break
4395 void foo(char * $restrict_keyword p);
4396 EOF
4397 done
4398
4399 check_cc <<EOF && enable pragma_deprecated
4400 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4401 EOF
4402
4403 check_cc <<EOF && enable attribute_packed
4404 struct { int x; } __attribute__((packed)) x;
4405 EOF
4406
4407 check_cc <<EOF && enable attribute_may_alias
4408 union { int x; } __attribute__((may_alias)) x;
4409 EOF
4410
4411 check_cc <<EOF || die "endian test failed"
4412 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4413 EOF
4414 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4415
4416 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4417     if ! enabled bigendian && enabled altivec ;then
4418         enable vsx
4419     fi
4420 fi
4421
4422 check_gas() {
4423     log "check_gas using '$as' as AS"
4424     # :vararg is used on aarch64, arm and ppc altivec
4425     check_as <<EOF || return 1
4426 .macro m n, y:vararg=0
4427 \n: .int \y
4428 .endm
4429 m x
4430 EOF
4431     # .altmacro is only used in arm asm
4432     ! enabled arm || check_as <<EOF || return 1
4433 .altmacro
4434 EOF
4435     enable gnu_as
4436     return 0
4437 }
4438
4439 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4440     nogas=:
4441     enabled_any arm aarch64 && nogas=die
4442     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4443     as_noop=-v
4444
4445     case $as_type in
4446         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4447         gcc)  gaspp_as_type=gas ;;
4448         *)    gaspp_as_type=$as_type ;;
4449     esac
4450
4451     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4452
4453     test "${as#*gas-preprocessor.pl}" != "$as" ||
4454     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4455         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4456
4457     if ! check_gas ; then
4458         as=${gas:=$as}
4459         check_gas || \
4460             $nogas "GNU assembler not found, install/update gas-preprocessor"
4461     fi
4462
4463     check_as <<EOF && enable as_func
4464 .func test
4465 .endfunc
4466 EOF
4467 fi
4468
4469 check_inline_asm inline_asm_labels '"1:\n"'
4470
4471 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4472
4473 if enabled aarch64; then
4474     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4475     # internal assembler in clang 3.3 does not support this instruction
4476     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4477     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4478
4479     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4480
4481 elif enabled alpha; then
4482
4483     check_cflags -mieee
4484
4485 elif enabled arm; then
4486
4487     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4488 float func(float a, float b){ return a+b; }
4489 EOF
4490
4491     enabled thumb && check_cflags -mthumb || check_cflags -marm
4492
4493     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4494         enable vfp_args
4495     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4496         case "${cross_prefix:-$cc}" in
4497             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4498             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4499 __asm__ (".eabi_attribute 28, 1");
4500 int main(void) { return 0; }
4501 EOF
4502         esac
4503         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4504     fi
4505
4506     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4507     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4508     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4509     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4510     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4511     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4512     enabled setend  && check_insn setend  'setend be'
4513
4514     [ $target_os = linux ] || [ $target_os = android ] ||
4515         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4516             $ARCH_EXT_LIST_ARM
4517
4518     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4519
4520     check_as <<EOF && enable as_dn_directive
4521 ra .dn d0.i16
4522 .unreq ra
4523 EOF
4524
4525     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4526
4527 elif enabled mips; then
4528
4529     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4530     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4531      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4532     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4533      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4534     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4535      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4536     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4537      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4538
4539 elif enabled parisc; then
4540
4541     if enabled gcc; then
4542         case $($cc -dumpversion) in
4543             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4544         esac
4545     fi
4546
4547 elif enabled ppc; then
4548
4549     enable local_aligned_8 local_aligned_16 local_aligned_32
4550
4551     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4552     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4553     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4554     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4555
4556     # AltiVec flags: The FSF version of GCC differs from the Apple version
4557     if enabled altivec; then
4558         check_cflags -maltivec -mabi=altivec &&
4559         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4560         check_cflags -faltivec
4561
4562         # check if our compiler supports Motorola AltiVec C API
4563         check_cc <<EOF || disable altivec
4564 $inc_altivec_h
4565 int main(void) {
4566     vector signed int v1 = (vector signed int) { 0 };
4567     vector signed int v2 = (vector signed int) { 1 };
4568     v1 = vec_add(v1, v2);
4569     return 0;
4570 }
4571 EOF
4572
4573         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4574     fi
4575
4576     if enabled vsx; then
4577         check_cflags -mvsx
4578     fi
4579 elif enabled x86; then
4580
4581     check_builtin rdtsc    intrin.h   "__rdtsc()"
4582     check_builtin mm_empty mmintrin.h "_mm_empty()"
4583
4584     enable local_aligned_8 local_aligned_16 local_aligned_32
4585
4586     # check whether EBP is available on x86
4587     # As 'i' is stored on the stack, this program will crash
4588     # if the base pointer is used to access it because the
4589     # base pointer is cleared in the inline assembly code.
4590     check_exec_crash <<EOF && enable ebp_available
4591 volatile int i=0;
4592 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4593 return i;
4594 EOF
4595
4596     # check whether EBX is available on x86
4597     check_inline_asm ebx_available '""::"b"(0)' &&
4598         check_inline_asm ebx_available '"":::"%ebx"'
4599
4600     # check whether xmm clobbers are supported
4601     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4602
4603     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4604         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4605
4606     # check whether binutils is new enough to compile SSSE3/MMXEXT
4607     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4608     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4609
4610     if ! disabled_any asm mmx yasm; then
4611         if check_cmd $yasmexe --version; then
4612             enabled x86_64 && yasm_extra="-m amd64"
4613             yasm_debug="-g dwarf2"
4614         elif check_cmd nasm -v; then
4615             yasmexe=nasm
4616             yasm_debug="-g -F dwarf"
4617             if enabled x86_64; then
4618                 case "$objformat" in
4619                     elf)   objformat=elf64 ;;
4620                     win32) objformat=win64 ;;
4621                 esac
4622             fi
4623         fi
4624
4625         YASMFLAGS="-f $objformat $yasm_extra"
4626         enabled pic               && append YASMFLAGS "-DPIC"
4627         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4628         case "$objformat" in
4629             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4630         esac
4631
4632         check_yasm "movbe ecx, [5]" && enable yasm ||
4633             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4634         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4635         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4636         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4637         check_yasm "CPU amdnop" || disable cpunop
4638     fi
4639
4640     case "$cpu" in
4641         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4642             disable fast_clz
4643         ;;
4644     esac
4645
4646 fi
4647
4648 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4649
4650 check_ldflags -Wl,--as-needed
4651 check_ldflags -Wl,-z,noexecstack
4652
4653 if check_func dlopen; then
4654     ldl=
4655 elif check_func dlopen -ldl; then
4656     ldl=-ldl
4657 fi
4658
4659 frei0r_filter_extralibs='$ldl'
4660 frei0r_src_filter_extralibs='$ldl'
4661 ladspa_filter_extralibs='$ldl'
4662
4663 if ! disabled network; then
4664     check_func getaddrinfo $network_extralibs
4665     check_func getservbyport $network_extralibs
4666     check_func inet_aton $network_extralibs
4667
4668     check_type netdb.h "struct addrinfo"
4669     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4670     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4671     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4672     check_type poll.h "struct pollfd"
4673     check_type netinet/sctp.h "struct sctp_event_subscribe"
4674     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4675     check_type netinet/in.h "struct sockaddr_in6"
4676     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4677     check_type "sys/types.h sys/socket.h" socklen_t
4678
4679     # Prefer arpa/inet.h over winsock2
4680     if check_header arpa/inet.h ; then
4681         check_func closesocket
4682     elif check_header winsock2.h ; then
4683         check_func_headers winsock2.h closesocket -lws2 &&
4684             network_extralibs="-lws2" ||
4685         { check_func_headers winsock2.h closesocket -lws2_32 &&
4686             network_extralibs="-lws2_32"; } || disable winsock2_h network
4687         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4688
4689         check_type ws2tcpip.h socklen_t
4690         check_type ws2tcpip.h "struct addrinfo"
4691         check_type ws2tcpip.h "struct group_source_req"
4692         check_type ws2tcpip.h "struct ip_mreq_source"
4693         check_type ws2tcpip.h "struct ipv6_mreq"
4694         check_type winsock2.h "struct pollfd"
4695         check_struct winsock2.h "struct sockaddr" sa_len
4696         check_type ws2tcpip.h "struct sockaddr_in6"
4697         check_type ws2tcpip.h "struct sockaddr_storage"
4698     else
4699         disable network
4700     fi
4701 fi
4702
4703 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4704 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4705 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4706 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4707 check_builtin sarestart signal.h "SA_RESTART"
4708 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4709
4710 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4711 check_func  ${malloc_prefix}memalign            && enable memalign
4712 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4713
4714 check_func  access
4715 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4716 check_func  fcntl
4717 check_func  fork
4718 check_func  gethrtime
4719 check_func  getopt
4720 check_func  getrusage
4721 check_func  gettimeofday
4722 check_func  gmtime_r
4723 check_func  isatty
4724 check_func  localtime_r
4725 check_func  mach_absolute_time
4726 check_func  mkstemp
4727 check_func  mmap
4728 check_func  mprotect
4729 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4730 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4731 check_func  sched_getaffinity
4732 check_func  setrlimit
4733 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4734 check_func  strerror_r
4735 check_func  sysconf
4736 check_func  sysctl
4737 check_func  usleep
4738
4739 check_func_headers conio.h kbhit
4740 check_func_headers io.h setmode
4741 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4742 check_func_headers stdlib.h getenv
4743
4744 check_func_headers windows.h CoTaskMemFree -lole32
4745 check_func_headers windows.h GetProcessAffinityMask
4746 check_func_headers windows.h GetProcessTimes
4747 check_func_headers windows.h GetSystemTimeAsFileTime
4748 check_func_headers windows.h MapViewOfFile
4749 check_func_headers windows.h MoveFileExA
4750 check_func_headers windows.h PeekNamedPipe
4751 check_func_headers windows.h SetConsoleTextAttribute
4752 check_func_headers windows.h Sleep
4753 check_func_headers windows.h VirtualAlloc
4754 check_struct windows.h "CONDITION_VARIABLE" Ptr
4755 check_func_headers glob.h glob
4756 enabled xlib &&
4757     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4758
4759 check_header cl/cl.h
4760 check_header direct.h
4761 check_header dlfcn.h
4762 check_header dxva.h
4763 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4764 check_header io.h
4765 check_header libcrystalhd/libcrystalhd_if.h
4766 check_header mach/mach_time.h
4767 check_header malloc.h
4768 check_header net/udplite.h
4769 check_header poll.h
4770 check_header sys/mman.h
4771 check_header sys/param.h
4772 check_header sys/resource.h
4773 check_header sys/select.h
4774 check_header sys/time.h
4775 check_header sys/un.h
4776 check_header termios.h
4777 check_header unistd.h
4778 check_header vdpau/vdpau.h
4779 check_header vdpau/vdpau_x11.h
4780 check_header VideoDecodeAcceleration/VDADecoder.h
4781 check_header windows.h
4782 check_header X11/extensions/XvMClib.h
4783 check_header asm/types.h
4784
4785 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4786 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4787 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4788
4789 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4790
4791 if ! disabled w32threads && ! enabled pthreads; then
4792     check_func_headers "windows.h process.h" _beginthreadex &&
4793         enable w32threads || disable w32threads
4794 fi
4795
4796 # check for some common methods of building with pthread support
4797 # do this before the optional library checks as some of them require pthreads
4798 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4799     enable pthreads
4800     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4801         add_cflags -pthread
4802         add_extralibs -pthread
4803     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4804         add_cflags -pthreads
4805         add_extralibs -pthreads
4806     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4807         add_cflags -ldl -pthread
4808         add_extralibs -ldl -pthread
4809     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4810         add_extralibs -lpthreadGC2
4811     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4812         :
4813     elif ! check_func pthread_join && ! check_func pthread_create; then
4814         disable pthreads
4815     fi
4816     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4817 fi
4818
4819
4820 if enabled pthreads; then
4821   check_func pthread_cancel
4822 fi
4823
4824 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4825 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4826 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4827
4828 check_lib math.h sin -lm && LIBM="-lm"
4829 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4830
4831 atan2f_args=2
4832 ldexpf_args=2
4833 powf_args=2
4834
4835 for func in $MATH_FUNCS; do
4836     eval check_mathfunc $func \${${func}_args:-1}
4837 done
4838
4839 # these are off by default, so fail if requested and not available
4840 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4841 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4842                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4843                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4844 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4845 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4846 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4847 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4848 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4849 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4850 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4851 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4852 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4853 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4854                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4855                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4856 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4857 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4858 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4859 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
4860 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4861 enabled fontconfig        && enable libfontconfig
4862 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4863 enabled libfreetype       && require_libfreetype
4864 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4865 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4866 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4867                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4868                                done || die "ERROR: libgsm not found"; }
4869 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4870 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
4871 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4872 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4873 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4874 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4875 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4876 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
4877                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4878                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4879                                die "ERROR: libopenjpeg not found"; }
4880 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4881 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
4882 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4883 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4884 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4885 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4886 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
4887                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
4888 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4889 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4890 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4891 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4892     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4893     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4894 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4895 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4896                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4897                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4898 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4899 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4900 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4901 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4902 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4903 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4904 enabled libvpx            && {
4905     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4906                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4907     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4908                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4909     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4910     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx || disable libvpx_vp9_encoder; } }
4911 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4912 enabled libwebp           && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
4913 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
4914                                { require libx264 x264.h x264_encoder_encode -lx264 &&
4915                                  warn "using libx264 without pkg-config"; } } &&
4916                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4917                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4918 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4919                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4920                                die "ERROR: libx265 version must be >= 17."; }
4921 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4922 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4923 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4924 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4925 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4926                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4927                                die "ERROR: openal not found"; } &&
4928                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4929                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4930 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4931                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4932                                die "ERROR: opencl not found"; } &&
4933                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4934                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4935                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4936 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4937                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4938                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4939                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4940                                die "ERROR: opengl not found."
4941                              }
4942 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4943                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4944                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4945                                die "ERROR: openssl not found"; }
4946 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4947
4948 if enabled gnutls; then
4949     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4950     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4951 fi
4952
4953 # libdc1394 check
4954 if enabled libdc1394; then
4955     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4956         enable libdc1394_2; } ||
4957     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4958         enable libdc1394_1; } ||
4959     die "ERROR: No version of libdc1394 found "
4960 fi
4961 if ! disabled sdl; then
4962     SDL_CONFIG="${cross_prefix}sdl-config"
4963     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4964         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4965         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4966         enable sdl
4967     else
4968         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4969             sdl_cflags=$("${SDL_CONFIG}" --cflags)
4970             sdl_libs=$("${SDL_CONFIG}" --libs)
4971             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4972             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4973             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4974             enable sdl
4975         elif enabled sdl ; then
4976             die "ERROR: SDL not found"
4977         else
4978             disable sdl
4979         fi
4980     fi
4981 fi
4982 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4983
4984 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4985 enabled makeinfo && (makeinfo --version | \
4986                      grep -q 'makeinfo (GNU texinfo) 5' > /dev/null 2>&1) \
4987     && enable makeinfo_html || disable makeinfo_html
4988 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4989 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4990 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4991 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4992
4993 check_header linux/fb.h
4994 check_header linux/videodev.h
4995 check_header linux/videodev2.h
4996 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4997
4998 check_header sys/videoio.h
4999 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5000
5001 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5002 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5003 # w32api 3.12 had it defined wrong
5004 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5005
5006 check_type "dshow.h" IBaseFilter
5007
5008 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5009 { check_header dev/bktr/ioctl_meteor.h &&
5010   check_header dev/bktr/ioctl_bt848.h; } ||
5011 { check_header machine/ioctl_meteor.h &&
5012   check_header machine/ioctl_bt848.h; } ||
5013 { check_header dev/video/meteor/ioctl_meteor.h &&
5014   check_header dev/video/bktr/ioctl_bt848.h; } ||
5015 check_header dev/ic/bt8xx.h
5016
5017 check_header sndio.h
5018 if check_struct sys/soundcard.h audio_buf_info bytes; then
5019     enable_safe sys/soundcard.h
5020 else
5021     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5022     #include <sys/soundcard.h>
5023     audio_buf_info abc;
5024 EOF
5025 fi
5026 check_header soundcard.h
5027
5028 enabled_any alsa_indev alsa_outdev &&
5029     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5030
5031 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
5032     check_func jack_port_get_latency_range -ljack
5033
5034 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5035
5036 if enabled libcdio; then
5037     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5038     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5039     die "ERROR: libcdio-paranoia not found"
5040 fi
5041
5042 enabled xlib &&
5043     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5044
5045 if ! disabled libxcb; then
5046     check_pkg_config xcb xcb/xcb.h xcb_connect || {
5047         enabled libxcb && die "ERROR: libxcb not found";
5048     } && disable x11grab && enable libxcb
5049
5050 if enabled libxcb; then
5051     disabled libxcb_shm || {
5052         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5053             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5054         } && check_header sys/shm.h && enable libxcb_shm; }
5055
5056     disabled libxcb_xfixes || {
5057         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5058             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5059         } && enable libxcb_xfixes; }
5060
5061     disabled libxcb_shape || {
5062         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5063             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5064         } && enable libxcb_shape; }
5065
5066     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5067     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5068 fi
5069 fi
5070
5071 if enabled x11grab; then
5072     enabled xlib || die "ERROR: Xlib not found"
5073     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5074     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5075 fi
5076
5077 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5078
5079 enabled dxva2api_h &&
5080     check_cc <<EOF && enable dxva2api_cobj
5081 #define _WIN32_WINNT 0x0600
5082 #define COBJMACROS
5083 #include <windows.h>
5084 #include <d3d9.h>
5085 #include <dxva2api.h>
5086 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5087 EOF
5088
5089 enabled vaapi &&
5090     check_lib va/va.h vaInitialize -lva ||
5091     disable vaapi
5092
5093 enabled vdpau &&
5094     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5095     disable vdpau
5096
5097 enabled vdpau && enabled xlib &&
5098     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5099     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5100     enable vdpau_x11
5101
5102 # Funny iconv installations are not unusual, so check it after all flags have been set
5103 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5104
5105 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5106
5107 # add some useful compiler flags if supported
5108 check_cflags -Wdeclaration-after-statement
5109 check_cflags -Wall
5110 check_cflags -Wdisabled-optimization
5111 check_cflags -Wpointer-arith
5112 check_cflags -Wredundant-decls
5113 check_cflags -Wwrite-strings
5114 check_cflags -Wtype-limits
5115 check_cflags -Wundef
5116 check_cflags -Wmissing-prototypes
5117 check_cflags -Wno-pointer-to-int-cast
5118 check_cflags -Wstrict-prototypes
5119 check_cflags -Wempty-body
5120 enabled extra_warnings && check_cflags -Winline
5121
5122 check_disable_warning(){
5123     warning_flag=-W${1#-Wno-}
5124     test_cflags $warning_flag && add_cflags $1
5125 }
5126
5127 check_disable_warning -Wno-parentheses
5128 check_disable_warning -Wno-switch
5129 check_disable_warning -Wno-format-zero-length
5130 check_disable_warning -Wno-pointer-sign
5131
5132 # add some linker flags
5133 check_ldflags -Wl,--warn-common
5134 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5135 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5136 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5137
5138 # add some strip flags
5139 # -wN '..@*' is more selective than -x, but not available everywhere.
5140 check_stripflags -wN \'..@*\' || check_stripflags -x
5141
5142 enabled neon_clobber_test &&
5143     check_ldflags -Wl,--wrap,avcodec_open2              \
5144                   -Wl,--wrap,avcodec_decode_audio4      \
5145                   -Wl,--wrap,avcodec_decode_video2      \
5146                   -Wl,--wrap,avcodec_decode_subtitle2   \
5147                   -Wl,--wrap,avcodec_encode_audio2      \
5148                   -Wl,--wrap,avcodec_encode_video2      \
5149                   -Wl,--wrap,avcodec_encode_subtitle    \
5150                   -Wl,--wrap,swr_convert                \
5151                   -Wl,--wrap,avresample_convert ||
5152     disable neon_clobber_test
5153
5154 enabled xmm_clobber_test &&
5155     check_ldflags -Wl,--wrap,avcodec_open2              \
5156                   -Wl,--wrap,avcodec_decode_audio4      \
5157                   -Wl,--wrap,avcodec_decode_video2      \
5158                   -Wl,--wrap,avcodec_decode_subtitle2   \
5159                   -Wl,--wrap,avcodec_encode_audio2      \
5160                   -Wl,--wrap,avcodec_encode_video       \
5161                   -Wl,--wrap,avcodec_encode_video2      \
5162                   -Wl,--wrap,avcodec_encode_subtitle    \
5163                   -Wl,--wrap,swr_convert                \
5164                   -Wl,--wrap,avresample_convert         \
5165                   -Wl,--wrap,sws_scale ||
5166     disable xmm_clobber_test
5167
5168 echo "X{};" > $TMPV
5169 if test_ldflags -Wl,--version-script,$TMPV; then
5170     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5171     check_cc <<EOF && enable symver_asm_label
5172 void ff_foo(void) __asm__ ("av_foo@VERSION");
5173 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5174 EOF
5175     check_cc <<EOF && enable symver_gnu_asm
5176 __asm__(".symver ff_foo,av_foo@VERSION");
5177 void ff_foo(void) {}
5178 EOF
5179 fi
5180
5181 if [ -z "$optflags" ]; then
5182     if enabled small; then
5183         optflags=$cflags_size
5184     elif enabled optimizations; then
5185         optflags=$cflags_speed
5186     else
5187         optflags=$cflags_noopt
5188     fi
5189 fi
5190
5191 check_optflags(){
5192     check_cflags "$@"
5193     enabled lto && check_ldflags "$@"
5194 }
5195
5196
5197 if enabled lto; then
5198     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5199     check_cflags  -flto
5200     check_ldflags -flto $cpuflags
5201     disable inline_asm_direct_symbol_refs
5202 fi
5203
5204 check_optflags $optflags
5205 check_optflags -fno-math-errno
5206 check_optflags -fno-signed-zeros
5207
5208 enabled ftrapv && check_cflags -ftrapv
5209
5210 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5211 int x;
5212 EOF
5213
5214
5215 if enabled icc; then
5216     # Just warnings, no remarks
5217     check_cflags -w1
5218     # -wd: Disable following warnings
5219     # 144, 167, 556: -Wno-pointer-sign
5220     # 188: enumerated type mixed with another type
5221     # 1292: attribute "foo" ignored
5222     # 1419: external declaration in primary source file
5223     # 10006: ignoring unknown option -fno-signed-zeros
5224     # 10148: ignoring unknown option -Wno-parentheses
5225     # 10156: ignoring option '-W'; no argument required
5226     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5227     # 11030: Warning unknown option --as-needed
5228     # 10156: ignoring option '-export'; no argument required
5229     check_ldflags -wd10156,11030
5230     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5231     enable ebp_available
5232     # The test above does not test linking
5233     enabled lto && disable symver_asm_label
5234     if enabled x86_32; then
5235         icc_version=$($cc -dumpversion)
5236         test ${icc_version%%.*} -ge 11 &&
5237             check_cflags -falign-stack=maintain-16-byte ||
5238             disable aligned_stack
5239     fi
5240 elif enabled ccc; then
5241     # disable some annoying warnings
5242     add_cflags -msg_disable bitnotint
5243     add_cflags -msg_disable mixfuncvoid
5244     add_cflags -msg_disable nonstandcast
5245     add_cflags -msg_disable unsupieee
5246 elif enabled gcc; then
5247     check_optflags -fno-tree-vectorize
5248     check_cflags -Werror=format-security
5249     check_cflags -Werror=implicit-function-declaration
5250     check_cflags -Werror=missing-prototypes
5251     check_cflags -Werror=return-type
5252     check_cflags -Werror=vla
5253     check_cflags -Wformat
5254     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5255 elif enabled llvm_gcc; then
5256     check_cflags -mllvm -stack-alignment=16
5257 elif enabled clang; then
5258     check_cflags -mllvm -stack-alignment=16
5259     check_cflags -Qunused-arguments
5260     check_cflags -Werror=implicit-function-declaration
5261     check_cflags -Werror=missing-prototypes
5262     check_cflags -Werror=return-type
5263 elif enabled cparser; then
5264     add_cflags -Wno-missing-variable-declarations
5265     add_cflags -Wno-empty-statement
5266 elif enabled armcc; then
5267     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5268     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5269     # 2523: use of inline assembly is deprecated
5270     add_cflags -W${armcc_opt},--diag_suppress=2523
5271     add_cflags -W${armcc_opt},--diag_suppress=1207
5272     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5273     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5274     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5275     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5276 elif enabled tms470; then
5277     add_cflags -pds=824 -pds=837
5278     disable inline_asm
5279 elif enabled pathscale; then
5280     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5281 elif enabled_any msvc icl; then
5282     enabled x86_32 && disable aligned_stack
5283     enabled_all x86_32 debug && add_cflags -Oy-
5284     enabled debug && add_ldflags -debug
5285     enable pragma_deprecated
5286     if enabled icl; then
5287         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5288         # (correctly) on icl 13.x.
5289         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5290             add_cflags -Qansi-alias
5291         # Some inline asm is not compilable in debug
5292         if enabled debug; then
5293             disable ebp_available
5294             disable ebx_available
5295         fi
5296     fi
5297     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5298     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5299 fi
5300
5301 case $as_type in
5302     clang)
5303         add_asflags -Qunused-arguments
5304     ;;
5305 esac
5306
5307 case $ld_type in
5308     clang)
5309         check_ldflags -Qunused-arguments
5310     ;;
5311 esac
5312
5313 case $target_os in
5314     osf1)
5315         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5316     ;;
5317     plan9)
5318         add_cppflags -Dmain=plan9_main
5319     ;;
5320 esac
5321
5322 enable frame_thread_encoder
5323
5324 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5325
5326 check_deps $CONFIG_LIST       \
5327            $CONFIG_EXTRA      \
5328            $HAVE_LIST         \
5329            $ALL_COMPONENTS    \
5330
5331 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
5332
5333
5334 if test $target_os = "haiku"; then
5335     disable memalign
5336     disable posix_memalign
5337 fi
5338
5339 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5340     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5341     enable dxva2_lib
5342
5343 ! enabled_any memalign posix_memalign aligned_malloc &&
5344     enabled simd_align_16 && enable memalign_hack
5345
5346 # add_dep lib dep
5347 # -> enable ${lib}_deps_${dep}
5348 # -> add $dep to ${lib}_deps only once
5349 add_dep() {
5350     lib=$1
5351     dep=$2
5352     enabled "${lib}_deps_${dep}" && return 0
5353     enable  "${lib}_deps_${dep}"
5354     prepend "${lib}_deps" $dep
5355 }
5356
5357 # merge deps lib components
5358 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5359 merge_deps() {
5360     lib=$1
5361     shift
5362     for comp in $*; do
5363         enabled $comp || continue
5364         eval "dep=\"\$${comp}_deps\""
5365         for d in $dep; do
5366             add_dep $lib $d
5367         done
5368     done
5369 }
5370
5371 merge_deps libavfilter $FILTER_LIST
5372
5373 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5374
5375 for thread in $THREADS_LIST; do
5376     if enabled $thread; then
5377         test -n "$thread_type" &&
5378             die "ERROR: Only one thread type must be selected." ||
5379             thread_type="$thread"
5380     fi
5381 done
5382
5383 enabled zlib && add_cppflags -DZLIB_CONST
5384
5385 # conditional library dependencies, in linking order
5386 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5387 enabled aresample_filter    && prepend avfilter_deps "swresample"
5388 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5389 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5390 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5391 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5392 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5393 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5394 enabled mp_filter           && prepend avfilter_deps "avcodec"
5395 enabled pan_filter          && prepend avfilter_deps "swresample"
5396 enabled pp_filter           && prepend avfilter_deps "postproc"
5397 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5398 enabled resample_filter && prepend avfilter_deps "avresample"
5399 enabled sab_filter          && prepend avfilter_deps "swscale"
5400 enabled scale_filter    && prepend avfilter_deps "swscale"
5401 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5402 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5403 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5404
5405 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5406
5407 enabled opus_decoder    && prepend avcodec_deps "swresample"
5408
5409 expand_deps(){
5410     lib_deps=${1}_deps
5411     eval "deps=\$$lib_deps"
5412     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5413     unique $lib_deps
5414 }
5415
5416 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5417 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5418
5419 map 'expand_deps $v' $LIBRARY_LIST
5420
5421 echo "install prefix            $prefix"
5422 echo "source path               $source_path"
5423 echo "C compiler                $cc"
5424 echo "C library                 $libc_type"
5425 if test "$host_cc" != "$cc"; then
5426     echo "host C compiler           $host_cc"
5427     echo "host C library            $host_libc_type"
5428 fi
5429 echo "ARCH                      $arch ($cpu)"
5430 if test "$build_suffix" != ""; then
5431     echo "build suffix              $build_suffix"
5432 fi
5433 if test "$progs_suffix" != ""; then
5434     echo "progs suffix              $progs_suffix"
5435 fi
5436 if test "$extra_version" != ""; then
5437     echo "version string suffix     $extra_version"
5438 fi
5439 echo "big-endian                ${bigendian-no}"
5440 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5441 if enabled x86; then
5442     echo "${yasmexe}                      ${yasm-no}"
5443     echo "MMX enabled               ${mmx-no}"
5444     echo "MMXEXT enabled            ${mmxext-no}"
5445     echo "3DNow! enabled            ${amd3dnow-no}"
5446     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5447     echo "SSE enabled               ${sse-no}"
5448     echo "SSSE3 enabled             ${ssse3-no}"
5449     echo "AVX enabled               ${avx-no}"
5450     echo "XOP enabled               ${xop-no}"
5451     echo "FMA3 enabled              ${fma3-no}"
5452     echo "FMA4 enabled              ${fma4-no}"
5453     echo "i686 features enabled     ${i686-no}"
5454     echo "CMOV is fast              ${fast_cmov-no}"
5455     echo "EBX available             ${ebx_available-no}"
5456     echo "EBP available             ${ebp_available-no}"
5457 fi
5458 if enabled aarch64; then
5459     echo "NEON enabled              ${neon-no}"
5460     echo "VFP enabled               ${vfp-no}"
5461 fi
5462 if enabled arm; then
5463     echo "ARMv5TE enabled           ${armv5te-no}"
5464     echo "ARMv6 enabled             ${armv6-no}"
5465     echo "ARMv6T2 enabled           ${armv6t2-no}"
5466     echo "VFP enabled               ${vfp-no}"
5467     echo "NEON enabled              ${neon-no}"
5468     echo "THUMB enabled             ${thumb-no}"
5469 fi
5470 if enabled mips; then
5471     echo "MIPS FPU enabled          ${mipsfpu-no}"
5472     echo "MIPS32R2 enabled          ${mips32r2-no}"
5473     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5474     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5475 fi
5476 if enabled ppc; then
5477     echo "AltiVec enabled           ${altivec-no}"
5478     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5479     echo "PPC VSX optimizations     ${vsx-no}"
5480     echo "dcbzl available           ${dcbzl-no}"
5481 fi
5482 echo "debug symbols             ${debug-no}"
5483 echo "strip symbols             ${stripping-no}"
5484 echo "optimize for size         ${small-no}"
5485 echo "optimizations             ${optimizations-no}"
5486 echo "static                    ${static-no}"
5487 echo "shared                    ${shared-no}"
5488 echo "postprocessing support    ${postproc-no}"
5489 echo "new filter support        ${avfilter-no}"
5490 echo "network support           ${network-no}"
5491 echo "threading support         ${thread_type-no}"
5492 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5493 echo "SDL support               ${sdl-no}"
5494 echo "opencl enabled            ${opencl-no}"
5495 echo "texi2html enabled         ${texi2html-no}"
5496 echo "perl enabled              ${perl-no}"
5497 echo "pod2man enabled           ${pod2man-no}"
5498 echo "makeinfo enabled          ${makeinfo-no}"
5499 echo "makeinfo supports HTML    ${makeinfo_html-no}"
5500 test -n "$random_seed" &&
5501     echo "random seed               ${random_seed}"
5502 echo
5503
5504 echo "External libraries:"
5505 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5506 echo
5507
5508 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5509     echo "Enabled ${type}s:"
5510     eval list=\$$(toupper $type)_LIST
5511     print_enabled '_*' $list | print_3_columns
5512     echo
5513 done
5514
5515 license="LGPL version 2.1 or later"
5516 if enabled nonfree; then
5517     license="nonfree and unredistributable"
5518 elif enabled gplv3; then
5519     license="GPL version 3 or later"
5520 elif enabled lgplv3; then
5521     license="LGPL version 3 or later"
5522 elif enabled gpl; then
5523     license="GPL version 2 or later"
5524 fi
5525
5526 echo "License: $license"
5527
5528 echo "Creating config.mak, config.h, and doc/config.texi..."
5529
5530 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5531
5532 enabled stripping || strip="echo skipping strip"
5533
5534 config_files="$TMPH config.mak doc/config.texi"
5535
5536 cat > config.mak <<EOF
5537 # Automatically generated by configure - do not modify!
5538 ifndef FFMPEG_CONFIG_MAK
5539 FFMPEG_CONFIG_MAK=1
5540 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5541 prefix=$prefix
5542 LIBDIR=\$(DESTDIR)$libdir
5543 SHLIBDIR=\$(DESTDIR)$shlibdir
5544 INCDIR=\$(DESTDIR)$incdir
5545 BINDIR=\$(DESTDIR)$bindir
5546 DATADIR=\$(DESTDIR)$datadir
5547 DOCDIR=\$(DESTDIR)$docdir
5548 MANDIR=\$(DESTDIR)$mandir
5549 SRC_PATH=$source_path
5550 ifndef MAIN_MAKEFILE
5551 SRC_PATH:=\$(SRC_PATH:.%=..%)
5552 endif
5553 CC_IDENT=$cc_ident
5554 ARCH=$arch
5555 INTRINSICS=$intrinsics
5556 CC=$cc
5557 CXX=$cxx
5558 AS=$as
5559 LD=$ld
5560 DEPCC=$dep_cc
5561 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5562 DEPAS=$as
5563 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5564 YASM=$yasmexe
5565 DEPYASM=$yasmexe
5566 AR=$ar
5567 ARFLAGS=$arflags
5568 AR_O=$ar_o
5569 RANLIB=$ranlib
5570 STRIP=$strip
5571 CP=cp -p
5572 LN_S=$ln_s
5573 CPPFLAGS=$CPPFLAGS
5574 CFLAGS=$CFLAGS
5575 CXXFLAGS=$CXXFLAGS
5576 ASFLAGS=$ASFLAGS
5577 AS_C=$AS_C
5578 AS_O=$AS_O
5579 CC_C=$CC_C
5580 CC_E=$CC_E
5581 CC_O=$CC_O
5582 CXX_C=$CXX_C
5583 CXX_O=$CXX_O
5584 LD_O=$LD_O
5585 LD_LIB=$LD_LIB
5586 LD_PATH=$LD_PATH
5587 DLLTOOL=$dlltool
5588 WINDRES=$windres
5589 DEPWINDRES=$dep_cc
5590 DOXYGEN=$doxygen
5591 LDFLAGS=$LDFLAGS
5592 LDEXEFLAGS=$LDEXEFLAGS
5593 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5594 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5595 YASMFLAGS=$YASMFLAGS
5596 BUILDSUF=$build_suffix
5597 PROGSSUF=$progs_suffix
5598 FULLNAME=$FULLNAME
5599 LIBPREF=$LIBPREF
5600 LIBSUF=$LIBSUF
5601 LIBNAME=$LIBNAME
5602 SLIBPREF=$SLIBPREF
5603 SLIBSUF=$SLIBSUF
5604 EXESUF=$EXESUF
5605 EXTRA_VERSION=$extra_version
5606 CCDEP=$CCDEP
5607 CXXDEP=$CXXDEP
5608 CCDEP_FLAGS=$CCDEP_FLAGS
5609 ASDEP=$ASDEP
5610 ASDEP_FLAGS=$ASDEP_FLAGS
5611 CC_DEPFLAGS=$CC_DEPFLAGS
5612 AS_DEPFLAGS=$AS_DEPFLAGS
5613 HOSTCC=$host_cc
5614 HOSTLD=$host_ld
5615 HOSTCFLAGS=$host_cflags
5616 HOSTCPPFLAGS=$host_cppflags
5617 HOSTEXESUF=$HOSTEXESUF
5618 HOSTLDFLAGS=$host_ldflags
5619 HOSTLIBS=$host_libs
5620 DEPHOSTCC=$host_cc
5621 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5622 HOSTCCDEP=$HOSTCCDEP
5623 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5624 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5625 HOSTCC_C=$HOSTCC_C
5626 HOSTCC_O=$HOSTCC_O
5627 HOSTLD_O=$HOSTLD_O
5628 TARGET_EXEC=$target_exec $target_exec_args
5629 TARGET_PATH=$target_path
5630 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5631 CFLAGS-ffplay=$sdl_cflags
5632 ZLIB=$($ldflags_filter -lz)
5633 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5634 EXTRALIBS=$extralibs
5635 COMPAT_OBJS=$compat_objs
5636 EXEOBJS=$exeobjs
5637 INSTALL=$install
5638 LIBTARGET=${LIBTARGET}
5639 SLIBNAME=${SLIBNAME}
5640 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5641 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5642 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5643 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5644 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5645 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5646 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5647 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5648 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5649 NOREDZONE_FLAGS=$noredzone_flags
5650 EOF
5651
5652 get_version(){
5653     lcname=lib${1}
5654     name=$(toupper $lcname)
5655     file=$source_path/$lcname/version.h
5656     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5657     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5658     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5659     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5660     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5661     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5662 }
5663
5664 map 'get_version $v' $LIBRARY_LIST
5665
5666 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5667
5668 print_program_libs(){
5669     eval "program_libs=\$${1}_libs"
5670     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5671 }
5672
5673 map 'print_program_libs $v' $PROGRAM_LIST
5674
5675 cat > $TMPH <<EOF
5676 /* Automatically generated by configure - do not modify! */
5677 #ifndef FFMPEG_CONFIG_H
5678 #define FFMPEG_CONFIG_H
5679 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5680 #define FFMPEG_LICENSE "$(c_escape $license)"
5681 #define CONFIG_THIS_YEAR 2015
5682 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5683 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5684 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5685 #define av_restrict $_restrict
5686 #define EXTERN_PREFIX "${extern_prefix}"
5687 #define EXTERN_ASM ${extern_prefix}
5688 #define BUILDSUF "$build_suffix"
5689 #define SLIBSUF "$SLIBSUF"
5690 #define HAVE_MMX2 HAVE_MMXEXT
5691 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5692 EOF
5693
5694 test -n "$assert_level" &&
5695     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5696
5697 test -n "$malloc_prefix" &&
5698     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5699
5700 if enabled yasm; then
5701     append config_files $TMPASM
5702     printf '' >$TMPASM
5703 fi
5704
5705 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5706
5707
5708 mkdir -p doc
5709 mkdir -p tests
5710 echo "@c auto-generated by configure" > doc/config.texi
5711
5712 print_config ARCH_   "$config_files" $ARCH_LIST
5713 print_config HAVE_   "$config_files" $HAVE_LIST
5714 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5715                                      $CONFIG_EXTRA      \
5716                                      $ALL_COMPONENTS    \
5717
5718 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5719 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5720
5721 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5722 cp_if_changed $TMPH config.h
5723 touch .config
5724
5725 enabled yasm && cp_if_changed $TMPASM config.asm
5726
5727 cat > $TMPH <<EOF
5728 /* Generated by ffconf */
5729 #ifndef AVUTIL_AVCONFIG_H
5730 #define AVUTIL_AVCONFIG_H
5731 EOF
5732
5733 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5734
5735 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5736
5737 cp_if_changed $TMPH libavutil/avconfig.h
5738
5739 if test -n "$WARNINGS"; then
5740     printf "\n$WARNINGS"
5741     enabled fatal_warnings && exit 1
5742 fi
5743
5744 # build pkg-config files
5745
5746 lib_version(){
5747     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5748 }
5749
5750 pkgconfig_generate(){
5751     name=$1
5752     shortname=${name#lib}${build_suffix}
5753     comment=$2
5754     version=$3
5755     libs=$4
5756     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5757     requires=${requires%, }
5758     enabled ${name#lib} || return 0
5759     mkdir -p $name
5760     cat <<EOF > $name/$name${build_suffix}.pc
5761 prefix=$prefix
5762 exec_prefix=\${prefix}
5763 libdir=$libdir
5764 includedir=$incdir
5765
5766 Name: $name
5767 Description: $comment
5768 Version: $version
5769 Requires: $(enabled shared || echo $requires)
5770 Requires.private: $(enabled shared && echo $requires)
5771 Conflicts:
5772 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5773 Libs.private: $(enabled shared && echo $libs)
5774 Cflags: -I\${includedir}
5775 EOF
5776
5777 mkdir -p doc/examples/pc-uninstalled
5778 includedir=${source_path}
5779 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5780     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5781 prefix=
5782 exec_prefix=
5783 libdir=\${pcfiledir}/../../../$name
5784 includedir=${includedir}
5785
5786 Name: $name
5787 Description: $comment
5788 Version: $version
5789 Requires: $requires
5790 Conflicts:
5791 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5792 Cflags: -I\${includedir}
5793 EOF
5794 }
5795
5796 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
5797 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5798 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5799 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5800 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5801 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5802 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
5803 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5804 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"