[deb_libcec.git] / configure.ac

AC_PREREQ(2.59)
AC_INIT([libcec], [2:1:0], [http://libcec.pulse-eight.com/])
AC_CONFIG_HEADERS([config.h])
AH_TOP([#pragma once])

AM_INIT_AUTOMAKE([foreign])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)

AC_CANONICAL_HOST

cflags_reset="$CFLAGS"
AC_LANG(C++)
AC_PROG_CXX
AC_PROG_LIBTOOL
AC_PROG_INSTALL
AC_LIBTOOL_DLOPEN
CFLAGS="$cflags_reset"

msg_pkg_config_missing="'pkg-config' is missing - adapter detection will not be available"
msg_pthread_missing="required library 'pthread' is missing"
msg_dl_missing="required library 'dl' is missing"
msg_udev_missing="library 'udev' is missing - adapter detection will not be available"
msg_dirent_missing="dirent.h header is missing - adapter detection will not be available"
msg_lockdev_missing="library 'liblockdev' is missing"
msg_rpi_api_missing="Raspberry Pi API not found or incompatible with libCEC"
msg_rpi_will_check="will check for RPi support"
msg_rpi_unsupported_target="will not check for RPi support (unsupported cpu: ${host_cpu})"
msg_required_header_missing="required header is missing"

## debugging symbols
AC_ARG_ENABLE([debug],
  [AS_HELP_STRING([--enable-debug],
  [include debug symbols (default is no)])],
  [use_debug=$enableval],
  [use_debug=no])

## optimisation
AC_ARG_ENABLE([optimisation],
  [AS_HELP_STRING([--enable-optimisation],
  [optimisation flag (default is yes)])],
  [use_optimisation=$enableval],
  [use_optimisation=yes])

## TDA995x support
AC_ARG_ENABLE([cubox],
  [AS_HELP_STRING([--enable-tda995x],
  [enable support for the TDA995x (default is no)])],
  [use_tda995x=$enableval],
  [use_tda995x=no])

## Optional path to the tda995x dev toolkit
AC_ARG_WITH([tda995x-toolkit-path],
  [AS_HELP_STRING([--with-tda995x-toolkit-path],
    [location of the TDA995x driver toolkit (default is ./nxp_hdmi)])],
  [TDA995X_CFLAGS="-I$withval/inc"],
  [TDA995X_CFLAGS="-I\$(abs_top_srcdir)/nxp_hdmi/inc"])

## Raspberry Pi support
AC_ARG_ENABLE([rpi],
  [AS_HELP_STRING([--enable-rpi],
  [enable support for the Raspberry Pi (default is auto)])],
  [use_rpi=$enableval],
  [use_rpi=auto])

## Optional path to the RPi's dev headers
AC_ARG_WITH([rpi-include-path],
  [AS_HELP_STRING([--with-rpi-include-path],
    [location of the Raspberry Pi headers (location of /opt/vc/include, default is auto)])],
  [RPI_CFLAGS="-I$withval -I$withval/interface/vcos/pthreads -I$withval/interface/vmcs_host/linux"])

## Optional path to libbcm_host.so
AC_ARG_WITH([rpi-lib-path],
  [AS_HELP_STRING([--with-rpi-lib-path],
    [location of the Raspberry Pi libraries (location of libbcm_host.so, default is auto)])],
  [RPI_LIBS="-L$withval"])

## only check for the RPi API on ARM targets
if test "x$use_rpi" != "xno"; then
  case "${host_cpu}" in
    arm*)
      AC_MSG_NOTICE($msg_rpi_will_check)
      ;;
    *)
      if test "x$use_rpi" = "xyes"; then
        AC_MSG_ERROR($msg_rpi_unsupported_target)
      else
        AC_MSG_NOTICE($msg_rpi_unsupported_target)
      fi
      use_rpi="no"
      ;;
  esac
fi

## add the top dir and include to the include path, so we can include config.h and cec.h
CPPFLAGS="$CPPFLAGS -I\$(abs_top_srcdir)/src -I\$(abs_top_srcdir)/include"

## search for pkg-config
AC_CHECK_PROG(HAVE_PKG_CONFIG, pkg-config, yes)
if test "x$HAVE_PKG_CONFIG" != "xyes" ; then
  AC_MSG_WARN($msg_pkg_config_missing)
fi

## search for pthread, required by all targets
AC_SEARCH_LIBS([pthread_create],[pthread],,AC_MSG_ERROR($msg_pthread_missing))
AC_CHECK_FUNCS([pthread_mutexattr_init pthread_cond_init pthread_cond_destroy pthread_cond_signal pthread_cond_broadcast pthread_cond_wait pthread_cond_timedwait])

## search for dlopen, required by all targets
AC_SEARCH_LIBS([dlopen], [dl],
  [test "$ac_cv_search_dlopen" = "none required" || LIBS_DL=$ac_cv_search_dlopen],
  AC_MSG_ERROR($msg_dl_missing))
AC_CHECK_FUNCS([dlopen dlclose dlsym])

## platform specific libs, required by all targets
case "${host}" in
  *-*-linux*)
    # for timeutils
    AC_SEARCH_LIBS([clock_gettime], [rt])
    ;;
  *-apple-darwin*)
    LIBS="$LIBS -framework CoreVideo -framework IOKit"
    ;;
esac

## we found all the libs and headers that we need for the client applications
libs_client="$LIBS"

## search for udev, lockdev and the RPi API, only required by libCEC
use_udev="no"
use_adapter_detection="yes"
use_lockdev="no"
case "${host}" in
  *-*-linux*)
    ## search for udev if pkg-config was found
    if test "x$HAVE_PKG_CONFIG" = "xyes" ; then
      PKG_CHECK_MODULES([UDEV],[libudev],use_udev="yes",AC_MSG_WARN($msg_udev_missing))
    fi

    ## we need dirent.h on linux too
    if test "$use_udev" = "yes"; then
      AC_CHECK_HEADER(dirent.h,,[use_udev="no";AC_MSG_WARN($msg_dirent_missing)])
    fi

    if test "$use_udev" != "yes"; then
      use_adapter_detection="no"
    fi

    ## search for lockdev
    use_lockdev="yes"
    AC_CHECK_HEADER(lockdev.h,,[use_lockdev="no";AC_MSG_WARN($msg_lockdev_missing)])
    AC_CHECK_LIB(lockdev,dev_unlock,,[use_lockdev="no";AC_MSG_WARN($msg_lockdev_missing)])

    AC_CHECK_HEADER(time.h,,AC_MSG_ERROR($msg_required_header_missing))
    AC_CHECK_HEADER(sys/prctl.h,,AC_MSG_ERROR($msg_required_header_missing))

    ## search for the RPi API. we need to check a couple of things to see if
    ## it's recent enough and contains the calls needed for libCEC to operate
    ## correctly.
    if test "x$use_rpi" != "xno"; then
      CPPFLAGS="$CPPFLAGS $RPI_CFLAGS"
      libs_pre_rpi="$LIBS"
      LIBS="$LIBS $RPI_LIBS -lvcos -lvchiq_arm"

      check_rpi_cec_service="yes"

      ## check for headers we need
      AC_CHECK_HEADER(interface/vmcs_host/vc_cec.h,,check_rpi_cec_service="no")
      AC_CHECK_HEADER(interface/vmcs_host/vc_cecservice.h,,check_rpi_cec_service="no")
      AC_CHECK_HEADER(interface/vchiq_arm/vchiq_if.h,,check_rpi_cec_service="no")
      AC_CHECK_HEADER(bcm_host.h,,check_rpi_cec_service="no")

      ## check if the headers contain support for libCEC.
      ## VC_CECSERVICE_VER needs to be defined
      AC_MSG_CHECKING([interface/vmcs_host/vc_cec.h compatibility])

      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <interface/vmcs_host/vc_cecservice.h>
#include <interface/vchiq_arm/vchiq_if.h>
#if !defined(VC_CECSERVICE_VER)
#error RPi headers does not contain libCEC support
#endif]], [[]])],[AC_MSG_RESULT([yes])],[check_rpi_cec_service="no"; AC_MSG_RESULT([no])])

      ## check if the methods we're using can be found in libbcm_host.so, so we don't use an incompatible version
      AC_CHECK_LIB(bcm_host,vchi_initialise,,check_rpi_cec_service="no")
      libs_tmp="$LIBS"
      AC_CHECK_LIB(bcm_host,vc_vchi_cec_init,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vc_cec_get_logical_address,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vc_cec_get_physical_address,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vc_cec_param2message,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vc_cec_poll_address,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vc_cec_register_callback,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vc_cec_release_logical_address,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vc_cec_set_passive,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vcos_init,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vchiq_initialise,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vchi_initialise,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,vchi_create_connection,,check_rpi_cec_service="no")
      AC_CHECK_LIB(bcm_host,bcm_host_init,,check_rpi_cec_service="no")
      LIBS="$libs_tmp"

      if test "x$check_rpi_cec_service" != "xyes" && test "x$use_rpi" = "xyes"; then
        AC_MSG_ERROR($msg_rpi_api_missing)
      elif test "x$check_rpi_cec_service" != "xyes"; then
        use_rpi="no"
        LIBS="$libs_pre_rpi"
      fi
    fi
    ;;
  *-apple-darwin*)
    AC_CHECK_HEADER(mach/mach_time.h,,AC_MSG_ERROR($msg_required_header_missing))
    AC_CHECK_HEADER(CoreVideo/CVHostTime.h,,AC_MSG_ERROR($msg_required_header_missing))
    AC_DEFINE([TARGET_DARWIN], [1], [Darwin target])
    ;;
esac

## define the build info
LIB_INFO="host: ${host}, features:"

features="Configured features:\n  Pulse-Eight CEC Adapter :\t\tyes"
LIB_INFO="$LIB_INFO 'P8 USB'"
AC_DEFINE([HAVE_P8_USB],[1],[Define to 1 to include support for the Pulse-Eight USB-CEC Adapter])
AM_CONDITIONAL(USE_P8_USB, true)

if test "x$use_lockdev" = "xyes"; then
  AC_DEFINE([HAVE_LOCKDEV],[1],[Define to 1 if liblockdev is installed])
fi

## mark adapter detection as available if the required deps were found
if test "x$use_adapter_detection" = "xyes"; then
  ## mark udev as available if it was found
  if test "x$use_udev" = "xyes"; then
    INCLUDES="$INCLUDES $UDEV_CFLAGS"
    LIBS="$LIBS $UDEV_LIBS"
    AC_DEFINE([HAVE_LIBUDEV],[1],[Define to 1 if libudev is installed])
    REQUIRES="$REQUIRES udev"
  fi

  AC_DEFINE([HAVE_P8_USB_DETECT],[1],[Define to 1 to include autodetection support for the Pulse-Eight USB-CEC Adapter])
  AM_CONDITIONAL(USE_P8_USB_DETECT, true)

  features="$features\n  Pulse-Eight CEC Adapter detection :\tyes"
  LIB_INFO="$LIB_INFO 'P8 USB detect'"
else
  AM_CONDITIONAL(USE_P8_USB_DETECT, false)
  features="$features\n  Pulse-Eight CEC Adapter detection :\tno"
fi

## mark RPi support as available if the required headers and libs were found
if test "x$use_rpi" != "xno"; then
  AC_DEFINE([HAVE_RPI_API],[1],[Define to 1 to include RPi support])
  AM_CONDITIONAL(USE_RPI_API, true)
  features="$features\n  Raspberry Pi support :\t\tyes"
  LIB_INFO="$LIB_INFO 'RPi'"
else
  AM_CONDITIONAL(USE_RPI_API, false)
  features="$features\n  Raspberry Pi support :\t\tno"
fi

## mark TDA995x support as available
if test "x$use_tda995x" != "xno"; then
  AC_DEFINE([HAVE_TDA995X_API],[1],[Define to 1 to include CuBox support])
  AM_CONDITIONAL(USE_TDA995X_API, true)
  features="$features\n  TDA995x support :\t\t\tyes"
  LIB_INFO="$LIB_INFO 'TDA995x'"
  CPPFLAGS="$CPPFLAGS $TDA995X_CFLAGS"
else
  AM_CONDITIONAL(USE_TDA995X_API, false)
  features="$features\n  TDA995x support :\t\t\tno"
fi

## check if our build system is complete
AC_CHECK_HEADER(algorithm,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(ctype.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(dlfcn.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(errno.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(fcntl.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(functional,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(locale,,AC_DEFINE([SS_NO_LOCALE],[1],[Define to 1 to exclude locale support]))
AC_CHECK_HEADER(map,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(netdb.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(poll.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(pthread.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(queue,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(semaphore.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(set,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(stdarg.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(stdint.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(stdio.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(stdlib.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(string,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(string.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(termios.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(unistd.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(vector,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(wchar.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(wctype.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(arpa/inet.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(netinet/in.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(netinet/tcp.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(sys/socket.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(sys/time.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_HEADER(sys/types.h,,AC_MSG_ERROR($msg_required_header_missing))
AC_CHECK_FUNCS([close fcntl select write read shutdown send recv memset sprintf getaddrinfo getsockopt setsockopt connect poll sched_yield open strerror tcsetattr tcgetattr cfsetispeed cfsetospeed bind freeaddrinfo listen accept socket])

## add the build date to LIB_INFO
AC_CHECK_PROG(HAVE_GIT, git, yes)
if test "x$HAVE_GIT" = "xyes"; then
  revision=$(git --no-pager log --abbrev=7 -n 1 --pretty=format:"%h" HEAD)
fi
if test "x$revision" != "x"; then
  LIB_INFO="$LIB_INFO, git revision: ${revision}"
fi

AC_CHECK_PROG(HAVE_DATE, date, yes)
if test "x$HAVE_DATE" = "xyes"; then
  LIB_INFO="$LIB_INFO, compiled on: `date -u`"
else
  LIB_INFO="$LIB_INFO, compiled on: (unknown date)"
fi

## add the name of the user who built libCEC to LIB_INFO
AC_CHECK_PROG(HAVE_WHOAMI, whoami, yes)
if test "x$HAVE_WHOAMI" = "xyes" ; then
  LIB_INFO="$LIB_INFO by `whoami`"
else
  LIB_INFO="$LIB_INFO by (unknown user)"
fi

## add the hostname of the build host of libCEC to LIB_INFO
AC_CHECK_PROG(HAVE_HOSTNAME, hostname, yes)
if test "x$HAVE_HOSTNAME" = "xyes"; then
  LIB_INFO="$LIB_INFO@`hostname -f`"
fi

## add the system info of the build host of libCEC to LIB_INFO
AC_CHECK_PROG(HAVE_UNAME, uname, yes)
if test "x$HAVE_UNAME" = "xyes"; then
  LIB_INFO="$LIB_INFO on `uname -s` `uname -r` (`uname -m`)"
fi

## redefine the LIBS, so cec-client isn't linked against things they don't need
LIBS_LIBCEC="$LIBS"
LIBS="$libs_client"

CXXFLAGS="$CXXFLAGS -fPIC -Wall -Wextra -Wno-missing-field-initializers"

if test "x$use_debug" = "xyes"; then
  CXXFLAGS="$CXXFLAGS -g"
  AC_DEFINE(CEC_DEBUGGING,"1", "generate libCEC debug output")
fi

if test "x$optimisation" = "xyes"; then
  CXXFLAGS="$CXXFLAGS -O2"
fi

AC_DEFINE_UNQUOTED(LIB_INFO,"$LIB_INFO", "information about how libCEC was compiled")

AC_SUBST([REQUIRES])
AC_SUBST([LIBS])
AC_SUBST([LIBS_LIBCEC])
AC_SUBST([LIB_INFO])
AC_SUBST([USE_P8_USB])
AC_SUBST([USE_P8_USB_DETECT])
AC_SUBST([USE_RPI_API])
AC_CONFIG_FILES([src/lib/libcec.pc])
AC_OUTPUT([Makefile src/lib/Makefile src/testclient/Makefile])

cat <<EOB

##############################################################################

libCEC version $VERSION configured

Compilation flags:
  CXXFLAGS :       $CXXFLAGS
  libCEC LDFLAGS : $LIBS_LIBCEC
  client LDFLAGS : $LIBS

EOB

echo -e "$features"

cat <<EOB

You can now build libCEC by running:
  make

##############################################################################

EOB
Commit	Line	Data
	1	AC_PREREQ(2.59)
	2	AC_INIT([libcec], [2:1:0], [http://libcec.pulse-eight.com/])
	3	AC_CONFIG_HEADERS([config.h])
	4	AH_TOP([#pragma once])
	5
	6	AM_INIT_AUTOMAKE([foreign])
	7	m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
	8
	9	AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)
	10
	11	AC_CANONICAL_HOST
	12
	13	cflags_reset="$CFLAGS"
	14	AC_LANG(C++)
	15	AC_PROG_CXX
	16	AC_PROG_LIBTOOL
	17	AC_PROG_INSTALL
	18	AC_LIBTOOL_DLOPEN
	19	CFLAGS="$cflags_reset"
	20
	21	msg_pkg_config_missing="'pkg-config' is missing - adapter detection will not be available"
	22	msg_pthread_missing="required library 'pthread' is missing"
	23	msg_dl_missing="required library 'dl' is missing"
	24	msg_udev_missing="library 'udev' is missing - adapter detection will not be available"
	25	msg_dirent_missing="dirent.h header is missing - adapter detection will not be available"
	26	msg_lockdev_missing="library 'liblockdev' is missing"
	27	msg_rpi_api_missing="Raspberry Pi API not found or incompatible with libCEC"
	28	msg_rpi_will_check="will check for RPi support"
	29	msg_rpi_unsupported_target="will not check for RPi support (unsupported cpu: ${host_cpu})"
	30	msg_required_header_missing="required header is missing"
	31
	32	## debugging symbols
	33	AC_ARG_ENABLE([debug],
	34	[AS_HELP_STRING([--enable-debug],
	35	[include debug symbols (default is no)])],
	36	[use_debug=$enableval],
	37	[use_debug=no])
	38
	39	## optimisation
	40	AC_ARG_ENABLE([optimisation],
	41	[AS_HELP_STRING([--enable-optimisation],
	42	[optimisation flag (default is yes)])],
	43	[use_optimisation=$enableval],
	44	[use_optimisation=yes])
	45
	46	## TDA995x support
	47	AC_ARG_ENABLE([cubox],
	48	[AS_HELP_STRING([--enable-tda995x],
	49	[enable support for the TDA995x (default is no)])],
	50	[use_tda995x=$enableval],
	51	[use_tda995x=no])
	52
	53	## Optional path to the tda995x dev toolkit
	54	AC_ARG_WITH([tda995x-toolkit-path],
	55	[AS_HELP_STRING([--with-tda995x-toolkit-path],
	56	[location of the TDA995x driver toolkit (default is ./nxp_hdmi)])],
	57	[TDA995X_CFLAGS="-I$withval/inc"],
	58	[TDA995X_CFLAGS="-I\$(abs_top_srcdir)/nxp_hdmi/inc"])
	59
	60	## Raspberry Pi support
	61	AC_ARG_ENABLE([rpi],
	62	[AS_HELP_STRING([--enable-rpi],
	63	[enable support for the Raspberry Pi (default is auto)])],
	64	[use_rpi=$enableval],
	65	[use_rpi=auto])
	66
	67	## Optional path to the RPi's dev headers
	68	AC_ARG_WITH([rpi-include-path],
	69	[AS_HELP_STRING([--with-rpi-include-path],
	70	[location of the Raspberry Pi headers (location of /opt/vc/include, default is auto)])],
	71	[RPI_CFLAGS="-I$withval -I$withval/interface/vcos/pthreads -I$withval/interface/vmcs_host/linux"])
	72
	73	## Optional path to libbcm_host.so
	74	AC_ARG_WITH([rpi-lib-path],
	75	[AS_HELP_STRING([--with-rpi-lib-path],
	76	[location of the Raspberry Pi libraries (location of libbcm_host.so, default is auto)])],
	77	[RPI_LIBS="-L$withval"])
	78
	79	## only check for the RPi API on ARM targets
	80	if test "x$use_rpi" != "xno"; then
	81	case "${host_cpu}" in
	82	arm*)
	83	AC_MSG_NOTICE($msg_rpi_will_check)
	84	;;
	85	*)
	86	if test "x$use_rpi" = "xyes"; then
	87	AC_MSG_ERROR($msg_rpi_unsupported_target)
	88	else
	89	AC_MSG_NOTICE($msg_rpi_unsupported_target)
	90	fi
	91	use_rpi="no"
	92	;;
	93	esac
	94	fi
	95
	96	## add the top dir and include to the include path, so we can include config.h and cec.h
	97	CPPFLAGS="$CPPFLAGS -I\$(abs_top_srcdir)/src -I\$(abs_top_srcdir)/include"
	98
	99	## search for pkg-config
	100	AC_CHECK_PROG(HAVE_PKG_CONFIG, pkg-config, yes)
	101	if test "x$HAVE_PKG_CONFIG" != "xyes" ; then
	102	AC_MSG_WARN($msg_pkg_config_missing)
	103	fi
	104
	105	## search for pthread, required by all targets
	106	AC_SEARCH_LIBS([pthread_create],[pthread],,AC_MSG_ERROR($msg_pthread_missing))
	107	AC_CHECK_FUNCS([pthread_mutexattr_init pthread_cond_init pthread_cond_destroy pthread_cond_signal pthread_cond_broadcast pthread_cond_wait pthread_cond_timedwait])
	108
	109	## search for dlopen, required by all targets
	110	AC_SEARCH_LIBS([dlopen], [dl],
	111	[test "$ac_cv_search_dlopen" = "none required" \|\| LIBS_DL=$ac_cv_search_dlopen],
	112	AC_MSG_ERROR($msg_dl_missing))
	113	AC_CHECK_FUNCS([dlopen dlclose dlsym])
	114
	115	## platform specific libs, required by all targets
	116	case "${host}" in
	117	--linux*)
	118	# for timeutils
	119	AC_SEARCH_LIBS([clock_gettime], [rt])
	120	;;
	121	-apple-darwin)
	122	LIBS="$LIBS -framework CoreVideo -framework IOKit"
	123	;;
	124	esac
	125
	126	## we found all the libs and headers that we need for the client applications
	127	libs_client="$LIBS"
	128
	129	## search for udev, lockdev and the RPi API, only required by libCEC
	130	use_udev="no"
	131	use_adapter_detection="yes"
	132	use_lockdev="no"
	133	case "${host}" in
	134	--linux*)
	135	## search for udev if pkg-config was found
	136	if test "x$HAVE_PKG_CONFIG" = "xyes" ; then
	137	PKG_CHECK_MODULES([UDEV],[libudev],use_udev="yes",AC_MSG_WARN($msg_udev_missing))
	138	fi
	139
	140	## we need dirent.h on linux too
	141	if test "$use_udev" = "yes"; then
	142	AC_CHECK_HEADER(dirent.h,,[use_udev="no";AC_MSG_WARN($msg_dirent_missing)])
	143	fi
	144
	145	if test "$use_udev" != "yes"; then
	146	use_adapter_detection="no"
	147	fi
	148
	149	## search for lockdev
	150	use_lockdev="yes"
	151	AC_CHECK_HEADER(lockdev.h,,[use_lockdev="no";AC_MSG_WARN($msg_lockdev_missing)])
	152	AC_CHECK_LIB(lockdev,dev_unlock,,[use_lockdev="no";AC_MSG_WARN($msg_lockdev_missing)])
	153
	154	AC_CHECK_HEADER(time.h,,AC_MSG_ERROR($msg_required_header_missing))
	155	AC_CHECK_HEADER(sys/prctl.h,,AC_MSG_ERROR($msg_required_header_missing))
	156
	157	## search for the RPi API. we need to check a couple of things to see if
	158	## it's recent enough and contains the calls needed for libCEC to operate
	159	## correctly.
	160	if test "x$use_rpi" != "xno"; then
	161	CPPFLAGS="$CPPFLAGS $RPI_CFLAGS"
	162	libs_pre_rpi="$LIBS"
	163	LIBS="$LIBS $RPI_LIBS -lvcos -lvchiq_arm"
	164
	165	check_rpi_cec_service="yes"
	166
	167	## check for headers we need
	168	AC_CHECK_HEADER(interface/vmcs_host/vc_cec.h,,check_rpi_cec_service="no")
	169	AC_CHECK_HEADER(interface/vmcs_host/vc_cecservice.h,,check_rpi_cec_service="no")
	170	AC_CHECK_HEADER(interface/vchiq_arm/vchiq_if.h,,check_rpi_cec_service="no")
	171	AC_CHECK_HEADER(bcm_host.h,,check_rpi_cec_service="no")
	172
	173	## check if the headers contain support for libCEC.
	174	## VC_CECSERVICE_VER needs to be defined
	175	AC_MSG_CHECKING([interface/vmcs_host/vc_cec.h compatibility])
	176
	177	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <interface/vmcs_host/vc_cecservice.h>
	178	#include <interface/vchiq_arm/vchiq_if.h>
	179	#if !defined(VC_CECSERVICE_VER)
	180	#error RPi headers does not contain libCEC support
	181	#endif]], [[]])],[AC_MSG_RESULT([yes])],[check_rpi_cec_service="no"; AC_MSG_RESULT([no])])
	182
	183	## check if the methods we're using can be found in libbcm_host.so, so we don't use an incompatible version
	184	AC_CHECK_LIB(bcm_host,vchi_initialise,,check_rpi_cec_service="no")
	185	libs_tmp="$LIBS"
	186	AC_CHECK_LIB(bcm_host,vc_vchi_cec_init,,check_rpi_cec_service="no")
	187	AC_CHECK_LIB(bcm_host,vc_cec_get_logical_address,,check_rpi_cec_service="no")
	188	AC_CHECK_LIB(bcm_host,vc_cec_get_physical_address,,check_rpi_cec_service="no")
	189	AC_CHECK_LIB(bcm_host,vc_cec_param2message,,check_rpi_cec_service="no")
	190	AC_CHECK_LIB(bcm_host,vc_cec_poll_address,,check_rpi_cec_service="no")
	191	AC_CHECK_LIB(bcm_host,vc_cec_register_callback,,check_rpi_cec_service="no")
	192	AC_CHECK_LIB(bcm_host,vc_cec_release_logical_address,,check_rpi_cec_service="no")
	193	AC_CHECK_LIB(bcm_host,vc_cec_set_passive,,check_rpi_cec_service="no")
	194	AC_CHECK_LIB(bcm_host,vcos_init,,check_rpi_cec_service="no")
	195	AC_CHECK_LIB(bcm_host,vchiq_initialise,,check_rpi_cec_service="no")
	196	AC_CHECK_LIB(bcm_host,vchi_initialise,,check_rpi_cec_service="no")
	197	AC_CHECK_LIB(bcm_host,vchi_create_connection,,check_rpi_cec_service="no")
	198	AC_CHECK_LIB(bcm_host,bcm_host_init,,check_rpi_cec_service="no")
	199	LIBS="$libs_tmp"
	200
	201	if test "x$check_rpi_cec_service" != "xyes" && test "x$use_rpi" = "xyes"; then
	202	AC_MSG_ERROR($msg_rpi_api_missing)
	203	elif test "x$check_rpi_cec_service" != "xyes"; then
	204	use_rpi="no"
	205	LIBS="$libs_pre_rpi"
	206	fi
	207	fi
	208	;;
	209	-apple-darwin)
	210	AC_CHECK_HEADER(mach/mach_time.h,,AC_MSG_ERROR($msg_required_header_missing))
	211	AC_CHECK_HEADER(CoreVideo/CVHostTime.h,,AC_MSG_ERROR($msg_required_header_missing))
	212	AC_DEFINE([TARGET_DARWIN], [1], [Darwin target])
	213	;;
	214	esac
	215
	216	## define the build info
	217	LIB_INFO="host: ${host}, features:"
	218
	219	features="Configured features:\n Pulse-Eight CEC Adapter :\t\tyes"
	220	LIB_INFO="$LIB_INFO 'P8 USB'"
	221	AC_DEFINE([HAVE_P8_USB],[1],[Define to 1 to include support for the Pulse-Eight USB-CEC Adapter])
	222	AM_CONDITIONAL(USE_P8_USB, true)
	223
	224	if test "x$use_lockdev" = "xyes"; then
	225	AC_DEFINE([HAVE_LOCKDEV],[1],[Define to 1 if liblockdev is installed])
	226	fi
	227
	228	## mark adapter detection as available if the required deps were found
	229	if test "x$use_adapter_detection" = "xyes"; then
	230	## mark udev as available if it was found
	231	if test "x$use_udev" = "xyes"; then
	232	INCLUDES="$INCLUDES $UDEV_CFLAGS"
	233	LIBS="$LIBS $UDEV_LIBS"
	234	AC_DEFINE([HAVE_LIBUDEV],[1],[Define to 1 if libudev is installed])
	235	REQUIRES="$REQUIRES udev"
	236	fi
	237
	238	AC_DEFINE([HAVE_P8_USB_DETECT],[1],[Define to 1 to include autodetection support for the Pulse-Eight USB-CEC Adapter])
	239	AM_CONDITIONAL(USE_P8_USB_DETECT, true)
	240
	241	features="$features\n Pulse-Eight CEC Adapter detection :\tyes"
	242	LIB_INFO="$LIB_INFO 'P8 USB detect'"
	243	else
	244	AM_CONDITIONAL(USE_P8_USB_DETECT, false)
	245	features="$features\n Pulse-Eight CEC Adapter detection :\tno"
	246	fi
	247
	248	## mark RPi support as available if the required headers and libs were found
	249	if test "x$use_rpi" != "xno"; then
	250	AC_DEFINE([HAVE_RPI_API],[1],[Define to 1 to include RPi support])
	251	AM_CONDITIONAL(USE_RPI_API, true)
	252	features="$features\n Raspberry Pi support :\t\tyes"
	253	LIB_INFO="$LIB_INFO 'RPi'"
	254	else
	255	AM_CONDITIONAL(USE_RPI_API, false)
	256	features="$features\n Raspberry Pi support :\t\tno"
	257	fi
	258
	259	## mark TDA995x support as available
	260	if test "x$use_tda995x" != "xno"; then
	261	AC_DEFINE([HAVE_TDA995X_API],[1],[Define to 1 to include CuBox support])
	262	AM_CONDITIONAL(USE_TDA995X_API, true)
	263	features="$features\n TDA995x support :\t\t\tyes"
	264	LIB_INFO="$LIB_INFO 'TDA995x'"
	265	CPPFLAGS="$CPPFLAGS $TDA995X_CFLAGS"
	266	else
	267	AM_CONDITIONAL(USE_TDA995X_API, false)
	268	features="$features\n TDA995x support :\t\t\tno"
	269	fi
	270
	271	## check if our build system is complete
	272	AC_CHECK_HEADER(algorithm,,AC_MSG_ERROR($msg_required_header_missing))
	273	AC_CHECK_HEADER(ctype.h,,AC_MSG_ERROR($msg_required_header_missing))
	274	AC_CHECK_HEADER(dlfcn.h,,AC_MSG_ERROR($msg_required_header_missing))
	275	AC_CHECK_HEADER(errno.h,,AC_MSG_ERROR($msg_required_header_missing))
	276	AC_CHECK_HEADER(fcntl.h,,AC_MSG_ERROR($msg_required_header_missing))
	277	AC_CHECK_HEADER(functional,,AC_MSG_ERROR($msg_required_header_missing))
	278	AC_CHECK_HEADER(locale,,AC_DEFINE([SS_NO_LOCALE],[1],[Define to 1 to exclude locale support]))
	279	AC_CHECK_HEADER(map,,AC_MSG_ERROR($msg_required_header_missing))
	280	AC_CHECK_HEADER(netdb.h,,AC_MSG_ERROR($msg_required_header_missing))
	281	AC_CHECK_HEADER(poll.h,,AC_MSG_ERROR($msg_required_header_missing))
	282	AC_CHECK_HEADER(pthread.h,,AC_MSG_ERROR($msg_required_header_missing))
	283	AC_CHECK_HEADER(queue,,AC_MSG_ERROR($msg_required_header_missing))
	284	AC_CHECK_HEADER(semaphore.h,,AC_MSG_ERROR($msg_required_header_missing))
	285	AC_CHECK_HEADER(set,,AC_MSG_ERROR($msg_required_header_missing))
	286	AC_CHECK_HEADER(stdarg.h,,AC_MSG_ERROR($msg_required_header_missing))
	287	AC_CHECK_HEADER(stdint.h,,AC_MSG_ERROR($msg_required_header_missing))
	288	AC_CHECK_HEADER(stdio.h,,AC_MSG_ERROR($msg_required_header_missing))
	289	AC_CHECK_HEADER(stdlib.h,,AC_MSG_ERROR($msg_required_header_missing))
	290	AC_CHECK_HEADER(string,,AC_MSG_ERROR($msg_required_header_missing))
	291	AC_CHECK_HEADER(string.h,,AC_MSG_ERROR($msg_required_header_missing))
	292	AC_CHECK_HEADER(termios.h,,AC_MSG_ERROR($msg_required_header_missing))
	293	AC_CHECK_HEADER(unistd.h,,AC_MSG_ERROR($msg_required_header_missing))
	294	AC_CHECK_HEADER(vector,,AC_MSG_ERROR($msg_required_header_missing))
	295	AC_CHECK_HEADER(wchar.h,,AC_MSG_ERROR($msg_required_header_missing))
	296	AC_CHECK_HEADER(wctype.h,,AC_MSG_ERROR($msg_required_header_missing))
	297	AC_CHECK_HEADER(arpa/inet.h,,AC_MSG_ERROR($msg_required_header_missing))
	298	AC_CHECK_HEADER(netinet/in.h,,AC_MSG_ERROR($msg_required_header_missing))
	299	AC_CHECK_HEADER(netinet/tcp.h,,AC_MSG_ERROR($msg_required_header_missing))
	300	AC_CHECK_HEADER(sys/socket.h,,AC_MSG_ERROR($msg_required_header_missing))
	301	AC_CHECK_HEADER(sys/time.h,,AC_MSG_ERROR($msg_required_header_missing))
	302	AC_CHECK_HEADER(sys/types.h,,AC_MSG_ERROR($msg_required_header_missing))
	303	AC_CHECK_FUNCS([close fcntl select write read shutdown send recv memset sprintf getaddrinfo getsockopt setsockopt connect poll sched_yield open strerror tcsetattr tcgetattr cfsetispeed cfsetospeed bind freeaddrinfo listen accept socket])
	304
	305	## add the build date to LIB_INFO
	306	AC_CHECK_PROG(HAVE_GIT, git, yes)
	307	if test "x$HAVE_GIT" = "xyes"; then
	308	revision=$(git --no-pager log --abbrev=7 -n 1 --pretty=format:"%h" HEAD)
	309	fi
	310	if test "x$revision" != "x"; then
	311	LIB_INFO="$LIB_INFO, git revision: ${revision}"
	312	fi
	313
	314	AC_CHECK_PROG(HAVE_DATE, date, yes)
	315	if test "x$HAVE_DATE" = "xyes"; then
	316	LIB_INFO="$LIB_INFO, compiled on: `date -u`"
	317	else
	318	LIB_INFO="$LIB_INFO, compiled on: (unknown date)"
	319	fi
	320
	321	## add the name of the user who built libCEC to LIB_INFO
	322	AC_CHECK_PROG(HAVE_WHOAMI, whoami, yes)
	323	if test "x$HAVE_WHOAMI" = "xyes" ; then
	324	LIB_INFO="$LIB_INFO by `whoami`"
	325	else
	326	LIB_INFO="$LIB_INFO by (unknown user)"
	327	fi
	328
	329	## add the hostname of the build host of libCEC to LIB_INFO
	330	AC_CHECK_PROG(HAVE_HOSTNAME, hostname, yes)
	331	if test "x$HAVE_HOSTNAME" = "xyes"; then
	332	LIB_INFO="$LIB_INFO@`hostname -f`"
	333	fi
	334
	335	## add the system info of the build host of libCEC to LIB_INFO
	336	AC_CHECK_PROG(HAVE_UNAME, uname, yes)
	337	if test "x$HAVE_UNAME" = "xyes"; then
	338	LIB_INFO="$LIB_INFO on `uname -s` `uname -r` (`uname -m`)"
	339	fi
	340
	341	## redefine the LIBS, so cec-client isn't linked against things they don't need
	342	LIBS_LIBCEC="$LIBS"
	343	LIBS="$libs_client"
	344
	345	CXXFLAGS="$CXXFLAGS -fPIC -Wall -Wextra -Wno-missing-field-initializers"
	346
	347	if test "x$use_debug" = "xyes"; then
	348	CXXFLAGS="$CXXFLAGS -g"
	349	AC_DEFINE(CEC_DEBUGGING,"1", "generate libCEC debug output")
	350	fi
	351
	352	if test "x$optimisation" = "xyes"; then
	353	CXXFLAGS="$CXXFLAGS -O2"
	354	fi
	355
	356	AC_DEFINE_UNQUOTED(LIB_INFO,"$LIB_INFO", "information about how libCEC was compiled")
	357
	358	AC_SUBST([REQUIRES])
	359	AC_SUBST([LIBS])
	360	AC_SUBST([LIBS_LIBCEC])
	361	AC_SUBST([LIB_INFO])
	362	AC_SUBST([USE_P8_USB])
	363	AC_SUBST([USE_P8_USB_DETECT])
	364	AC_SUBST([USE_RPI_API])
	365	AC_CONFIG_FILES([src/lib/libcec.pc])
	366	AC_OUTPUT([Makefile src/lib/Makefile src/testclient/Makefile])
	367
	368	cat <<EOB
	369
	370	##############################################################################
	371
	372	libCEC version $VERSION configured
	373
	374	Compilation flags:
	375	CXXFLAGS : $CXXFLAGS
	376	libCEC LDFLAGS : $LIBS_LIBCEC
	377	client LDFLAGS : $LIBS
	378
	379	EOB
	380
	381	echo -e "$features"
	382
	383	cat <<EOB
	384
	385	You can now build libCEC by running:
	386	make
	387
	388	##############################################################################
	389
	390	EOB