ffmpeg/doc/build_system.txt

   1 FFmpeg currently uses a custom build system, this text attempts to document
   2 some of its obscure features and options.
   3
   4 Makefile variables:
   5
   6 V
   7     Disable the default terse mode, the full command issued by make and its
   8     output will be shown on the screen.
   9
  10 DESTDIR
  11     Destination directory for the install targets, useful to prepare packages
  12     or install FFmpeg in cross-environments.
  13
  14 Makefile targets:
  15
  16 all
  17     Default target, builds all the libraries and the executables.
  18
  19 fate
  20     Run the fate test suite, note you must have installed it
  21
  22 fate-list
  23     Will list all fate/regression test targets
  24
  25 install
  26     Install headers, libraries and programs.
  27
  28 examples
  29     Build all examples located in doc/examples.
  30
  31 libavformat/output-example
  32     Build the libavformat basic example.
  33
  34 libavcodec/api-example
  35     Build the libavcodec basic example.
  36
  37 libswscale/swscale-test
  38     Build the swscale self-test (useful also as example).
  39
  40 config
  41     Reconfigure the project with current configuration.
  42
  43
  44 Useful standard make commands:
  45 make -t <target>
  46     Touch all files that otherwise would be build, this is useful to reduce
  47     unneeded rebuilding when changing headers, but note you must force rebuilds
  48     of files that actually need it by hand then.
  49
  50 make -j<num>
  51     rebuild with multiple jobs at the same time. Faster on multi processor systems
  52
  53 make -k
  54     continue build in case of errors, this is useful for the regression tests
  55     sometimes but note it will still not run all reg tests.
  56