configure.ac - gst-plugins-ugly1.0 - Git at Google

 AC_PREREQ([2.69])

 dnl please read gstreamer/docs/random/autotools before changing this file

 dnl initialize autoconf
 dnl releases only do -Wall, cvs and prerelease does -Werror too
 dnl use a three digit version number for releases, and four for cvs/prerelease
 AC_INIT([GStreamer Ugly Plug-ins],[1.14.1],[http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer],[gst-plugins-ugly])

 AG_GST_INIT

 dnl initialize automake
 AM_INIT_AUTOMAKE([-Wno-portability 1.14 no-dist-gzip dist-xz tar-ustar subdir-objects])

 dnl define PACKAGE_VERSION_* variables
 AS_VERSION

 dnl check if this is a release version
 AS_NANO(GST_GIT="no", GST_GIT="yes")

 dnl can autoconf find the source ?
 AC_CONFIG_SRCDIR([gst/asfdemux/gstasfdemux.c])

 dnl define the output header for config
 AC_CONFIG_HEADERS(config.h)

 dnl AM_MAINTAINER_MODE only provides the option to configure to enable it
 AM_MAINTAINER_MODE([enable])

 dnl sets host_* variables
 AC_CANONICAL_HOST

 dnl use pretty build output with automake >= 1.11
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])],
   [AM_DEFAULT_VERBOSITY=1
    AC_SUBST(AM_DEFAULT_VERBOSITY)])

 dnl our libraries and install dirs use GST_API_VERSION in the filename
 dnl to allow side-by-side installation of different API versions
 GST_API_VERSION=1.0
 AC_SUBST(GST_API_VERSION)
 AC_DEFINE_UNQUOTED(GST_API_VERSION, "$GST_API_VERSION",
   [GStreamer API Version])

 AS_LIBTOOL(GST, 1401, 0, 1401)

 dnl *** required versions of GStreamer stuff ***
 GST_REQ=1.14.1
 GSTPB_REQ=1.14.1

 dnl *** autotools stuff ****

 dnl allow for different autotools
 AS_AUTOTOOLS_ALTERNATE

 dnl Add parameters for aclocal
 AC_SUBST(ACLOCAL_AMFLAGS, "-I m4 -I common/m4")

 dnl set up gettext
 dnl the version check needs to stay here because autopoint greps for it
 AM_GNU_GETTEXT_VERSION(0.17)
 AM_GNU_GETTEXT([external])
 AG_GST_GETTEXT([gst-plugins-ugly-$GST_API_VERSION])

 dnl *** check for arguments to configure ***

 AG_GST_ARG_DISABLE_FATAL_WARNINGS
 AG_GST_ARG_ENABLE_EXTRA_CHECKS

 AG_GST_ARG_DEBUG
 AG_GST_ARG_PROFILING
 AG_GST_ARG_VALGRIND
 AG_GST_ARG_GCOV

 AG_GST_ARG_EXAMPLES

 AG_GST_ARG_WITH_PKG_CONFIG_PATH
 AG_GST_ARG_WITH_PACKAGE_NAME
 AG_GST_ARG_WITH_PACKAGE_ORIGIN

 AG_GST_ARG_WITH_PLUGINS

 AG_GST_ARG_ENABLE_EXTERNAL

 AG_GST_ARG_ENABLE_EXPERIMENTAL

 dnl *** checks for platform ***

 dnl * hardware/architecture *

 dnl common/m4/gst-arch.m4
 dnl check CPU type
 AG_GST_ARCH

 dnl Determine endianness
 AC_C_BIGENDIAN

 dnl *** software ***

 dnl check for large file support
 dnl affected plugins must include config.h
 AC_SYS_LARGEFILE

 dnl *** checks for programs ***

 dnl find a compiler
 AC_PROG_CC
 AC_PROG_CC_STDC

 dnl determine c++ compiler
 AC_PROG_CXX
 dnl determine if c++ is available on this system
 AC_CHECK_PROG(HAVE_CXX, $CXX, yes, no)

 dnl check if the compiler supports '-c' and '-o' options
 AM_PROG_CC_C_O

 AC_PATH_PROG(VALGRIND_PATH, valgrind, no)
 AM_CONDITIONAL(HAVE_VALGRIND, test ! "x$VALGRIND_PATH" = "xno")

 dnl check if the compiler supports do while(0) macros
 AG_GST_CHECK_DOWHILE_MACROS

 dnl check for documentation tools
 GTK_DOC_CHECK([1.12])
 AG_GST_PLUGIN_DOCS([1.12])

 dnl *** checks for libraries ***

 dnl check for libm, for sin()
 LT_LIB_M
 AC_SUBST(LIBM)

 dnl *** checks for header files ***

 dnl used by ext/a52dec
 AX_CREATE_STDINT_H

 dnl Check for malloc.h
 AC_CHECK_HEADERS([malloc.h])

 dnl *** checks for types/defines ***

 dnl *** checks for structures ***

 dnl *** checks for compiler characteristics ***

 dnl *** checks for library functions ***

 dnl Check for a way to display the function name in debug output
 AG_GST_CHECK_FUNCTION

 dnl *** checks for dependency libraries ***

 dnl GLib is required
 GLIB_REQ=2.40.0
 AG_GST_GLIB_CHECK([$GLIB_REQ])

 ORC_CHECK([0.4.16])

 dnl checks for gstreamer
 dnl uninstalled is selected preferentially -- see pkg-config(1)
 AG_GST_CHECK_GST($GST_API_VERSION, [$GST_REQ], yes)
 AG_GST_CHECK_GST_BASE($GST_API_VERSION, [$GST_REQ], yes)
 AG_GST_CHECK_GST_CHECK($GST_API_VERSION, [$GST_REQ], no)
 AG_GST_CHECK_GST_PLUGINS_BASE($GST_API_VERSION, [$GSTPB_REQ], yes)
 AM_CONDITIONAL(HAVE_GST_CHECK, test "x$HAVE_GST_CHECK" = "xyes")

 dnl Check for documentation xrefs
 GLIB_PREFIX="`$PKG_CONFIG --variable=prefix glib-2.0`"
 GST_PREFIX="`$PKG_CONFIG --variable=prefix gstreamer-$GST_API_VERSION`"
 GSTPB_PREFIX="`$PKG_CONFIG --variable=prefix gstreamer-plugins-base-$GST_API_VERSION`"
 AC_SUBST(GLIB_PREFIX)
 AC_SUBST(GST_PREFIX)
 AC_SUBST(GSTPB_PREFIX)

 dnl Needed by plugins that use g_module_*() API
 PKG_CHECK_MODULES(GMODULE_NO_EXPORT, gmodule-no-export-2.0)

 dnl Check for -Bsymbolic-functions linker flag used to avoid
 dnl intra-library PLT jumps, if available.
 AC_ARG_ENABLE(Bsymbolic,
               [AS_HELP_STRING([--disable-Bsymbolic],[avoid linking with -Bsymbolic])],,
               [SAVED_LDFLAGS="${LDFLAGS}" SAVED_LIBS="${LIBS}"
                AC_MSG_CHECKING([for -Bsymbolic-functions linker flag])
                LDFLAGS=-Wl,-Bsymbolic-functions
                LIBS=
                AC_TRY_LINK([], [return 0],
                            AC_MSG_RESULT(yes)
                            enable_Bsymbolic=yes,
                            AC_MSG_RESULT(no)
                            enable_Bsymbolic=no)
                LDFLAGS="${SAVED_LDFLAGS}" LIBS="${SAVED_LIBS}"])

 dnl *** set variables based on configure arguments ***

 dnl set license and copyright notice
 GST_LICENSE="LGPL"
 AC_DEFINE_UNQUOTED(GST_LICENSE, "$GST_LICENSE", [GStreamer license])
 AC_SUBST(GST_LICENSE)

 dnl set location of plugin directory
 AG_GST_SET_PLUGINDIR

 dnl set release date/time
 AG_GST_SET_PACKAGE_RELEASE_DATETIME_WITH_NANO([$PACKAGE_VERSION_NANO],
   ["${srcdir}/gst-plugins-ugly.doap"],
   [$PACKAGE_VERSION_MAJOR.$PACKAGE_VERSION_MINOR.$PACKAGE_VERSION_MICRO])

 dnl define an ERROR_CFLAGS Makefile variable
 AG_GST_SET_ERROR_CFLAGS($FATAL_WARNINGS, [
     -Wmissing-declarations -Wmissing-prototypes -Wredundant-decls
     -Wwrite-strings -Wformat-nonliteral -Wformat-security -Wold-style-definition
     -Winit-self -Wmissing-include-dirs -Waddress
     -Waggregate-return -Wno-multichar -Wnested-externs ])

 dnl define an ERROR_CXXFLAGS Makefile variable
 AG_GST_SET_ERROR_CXXFLAGS($FATAL_WARNINGS, [
     -Wmissing-declarations -Wredundant-decls
     -Wwrite-strings -Wformat-nonliteral -Wformat-security
     -Winit-self -Wmissing-include-dirs -Waddress -Waggregate-return
     -Wno-multichar])

 dnl define correct level for debugging messages
 AG_GST_SET_LEVEL_DEFAULT($GST_GIT)

 dnl used in examples
 AG_GST_DEFAULT_ELEMENTS

 dnl *** plug-ins to include ***

 dnl these are all the gst plug-ins, compilable without additional libs
 AG_GST_CHECK_PLUGIN(asfdemux)
 AG_GST_CHECK_PLUGIN(dvdlpcmdec)
 AG_GST_CHECK_PLUGIN(dvdsub)
 AG_GST_CHECK_PLUGIN(xingmux)
 AG_GST_CHECK_PLUGIN(realmedia)

 AC_CHECK_HEADERS([winsock2.h], HAVE_WINSOCK2_H=yes)

 if test "x$HAVE_WINSOCK2_H" = "xyes"; then
   WIN32_LIBS="-lws2_32"
   AC_SUBST(WIN32_LIBS)
 fi

 dnl *** ext plug-ins ***
 dnl keep this list sorted alphabetically !

 if test "x$BUILD_EXTERNAL" = "xyes"; then

 echo
 AC_MSG_NOTICE([Checking libraries for plugins in ext/])
 echo

 dnl *** a52dec ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_A52DEC, true)
 AG_GST_CHECK_FEATURE(A52DEC, [a52dec], a52dec, [
   AC_CHECK_A52DEC(HAVE_A52DEC=yes, HAVE_A52DEC=no)
 ])

 dnl *** amr-nb ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_AMRNB, true)
 AG_GST_CHECK_FEATURE(AMRNB, [amrnb library], amrnb, [
   AG_GST_PKG_CHECK_MODULES(AMRNB, opencore-amrnb >= 0.1.3)
 ])

 dnl *** amr-wb dec ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_AMRWB, true)
 AG_GST_CHECK_FEATURE(AMRWB, [amrwb library], amrwbdec, [
   AG_GST_PKG_CHECK_MODULES(AMRWB, opencore-amrwb >= 0.1.3)
 ])

 dnl *** cdio ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_CDIO, true)
 AG_GST_CHECK_FEATURE(CDIO, [cdio library], cdio, [
   AG_GST_PKG_CHECK_MODULES(CDIO, libcdio >= 0.76)
 ])

 dnl *** dvdread ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_DVDREAD, true)
 AG_GST_CHECK_FEATURE(DVDREAD, [dvdread library], dvdreadsrc, [
   AG_GST_CHECK_LIBHEADER(DVDREAD, dvdread, DVDOpen, , dvdread/dvd_reader.h, DVDREAD_LIBS="-ldvdread")
   AC_SUBST(DVDREAD_LIBS)
 ])

 dnl *** mpeg2dec ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_MPEG2DEC, true)
 AG_GST_CHECK_FEATURE(MPEG2DEC, [mpeg2dec], mpeg2dec, [
   AG_GST_PKG_CHECK_MODULES(MPEG2DEC, libmpeg2 >= 0.5.1)
 ])

 dnl *** sidplay : works with libsidplay 1.36.x (not 2.x.x) ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_SIDPLAY, true)
 AG_GST_CHECK_FEATURE(SIDPLAY, [libsidplay], sid, [
   GST_PATH_SIDPLAY()
 ])

 dnl *** x264 (MPEG-4 part 10/h.264/AVC encoder) ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_X264, true)
 AG_GST_CHECK_FEATURE(X264, [x264 plug-in], x264, [
   AG_GST_PKG_CHECK_MODULES(X264, x264 >= 0.120)

   dnl Paths to additional x264 library variants, e.g. 10/12 bit
   AC_ARG_WITH([x264-libraries],
     AS_HELP_STRING([--with-x264-libraries=PATHS], [Colon separated list of additional x264 library paths, e.g. for 10-bit version]),
     [
       if test "x$withval" != "x"
       then
         AC_DEFINE_UNQUOTED(HAVE_X264_ADDITIONAL_LIBRARIES, "$withval", [Additional x264 libraries])
       fi
     ], []
   )
 ])

 else

 dnl not building plugins with external dependencies,
 dnl but we still need to set the conditionals

 AM_CONDITIONAL(USE_A52DEC, false)
 AM_CONDITIONAL(USE_AMRNB, false)
 AM_CONDITIONAL(USE_AMRWB, false)
 AM_CONDITIONAL(USE_CDIO, false)
 AM_CONDITIONAL(USE_DVDREAD, false)
 AM_CONDITIONAL(USE_MPEG2DEC, false)
 AM_CONDITIONAL(USE_SIDPLAY, false)
 AM_CONDITIONAL(USE_X264, false)

 fi dnl of EXT plugins

 dnl *** finalize CFLAGS, LDFLAGS, LIBS

 dnl Overview:
 dnl GST_OPTION_CFLAGS:  common flags for profiling, debugging, errors, ...
 dnl GST_*:              flags shared by built objects to link against GStreamer
 dnl GST_ALL_LDFLAGS:    linker flags shared by all
 dnl GST_LIB_LDFLAGS:    additional linker flags for all libaries
 dnl GST_LT_LDFLAGS:     library versioning of our libraries
 dnl GST_PLUGIN_LDFLAGS: flags to be used for all plugins

 dnl GST_OPTION_CFLAGS
 if test "x$USE_DEBUG" = xyes; then
    PROFILE_CFLAGS="-g"
 fi
 AC_SUBST(PROFILE_CFLAGS)

 if test "x$PACKAGE_VERSION_NANO" = "x1"; then
   dnl Define _only_ during CVS (not pre-releases or releases)
   DEPRECATED_CFLAGS="-DGST_DISABLE_DEPRECATED"
 else
   DEPRECATED_CFLAGS=""
 fi
 AC_SUBST(DEPRECATED_CFLAGS)

 VISIBILITY_CFLAGS=""
 AS_COMPILER_FLAG([-fvisibility=hidden], [VISIBILITY_CFLAGS="-fvisibility=hidden"])
 AC_SUBST(VISIBILITY_CFLAGS)

 VISIBILITY_CXXFLAGS=""
 if test "x$HAVE_CXX" = "xyes"; then
   AS_CXX_COMPILER_FLAG([-fvisibility=hidden], [VISIBILITY_CXXFLAGS="-fvisibility=hidden"])
 fi
 AC_SUBST(VISIBILITY_CXXFLAGS)

 dnl disable strict aliasing
 AS_COMPILER_FLAG([-fno-strict-aliasing], [EXTRA_CFLAGS="-fno-strict-aliasing"])
 AC_SUBST(EXTRA_CFLAGS)

 dnl every flag in GST_OPTION_CFLAGS and GST_OPTION_CXXFLAGS can be overridden
 dnl at make time with e.g. make ERROR_CFLAGS=""
 GST_OPTION_CFLAGS="\$(WARNING_CFLAGS) \$(ERROR_CFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
 GST_OPTION_CXXFLAGS="\$(WARNING_CXXFLAGS) \$(ERROR_CXXFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
 AC_SUBST(GST_OPTION_CFLAGS)
 AC_SUBST(GST_OPTION_CXXFLAGS)

 dnl FIXME: do we want to rename to GST_ALL_* ?
 dnl prefer internal headers to already installed ones
 dnl also add builddir include for enumtypes and marshal
 dnl add GST_OPTION_CFLAGS, but overridable
 GST_CFLAGS="$GST_CFLAGS"
 GST_CXXFLAGS="-I\$(top_srcdir)/gst-libs -I\$(top_builddir)/gst-libs $GST_CFLAGS $EXTRA_CFLAGS $GLIB_EXTRA_CFLAGS \$(GST_OPTION_CXXFLAGS) \$(VISIBILITY_CXXFLAGS)"
 GST_CFLAGS="-I\$(top_srcdir)/gst-libs -I\$(top_builddir)/gst-libs $GST_CFLAGS $EXTRA_CFLAGS $GLIB_EXTRA_CFLAGS \$(GST_OPTION_CFLAGS) \$(VISIBILITY_CFLAGS)"
 AC_SUBST(GST_CFLAGS)
 AC_SUBST(GST_CXXFLAGS)
 AC_SUBST(GST_LIBS)

 dnl LDFLAGS really should only contain flags, not libs - they get added before
 dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
 GST_ALL_LDFLAGS="-no-undefined"
 if test "x${enable_Bsymbolic}" = "xyes"; then
   GST_ALL_LDFLAGS="$GST_ALL_LDFLAGS -Wl,-Bsymbolic-functions"
 fi
 AC_SUBST(GST_ALL_LDFLAGS)

 dnl this really should only contain flags, not libs - they get added before
 dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
 GST_PLUGIN_LDFLAGS="-module -avoid-version $GST_ALL_LDFLAGS"
 AC_SUBST(GST_PLUGIN_LDFLAGS)

 dnl *** output files ***

 AC_CONFIG_FILES(
 Makefile
 common/Makefile
 common/m4/Makefile
 gst-libs/Makefile
 gst-libs/gst/Makefile
 gst/Makefile
 gst/asfdemux/Makefile
 gst/dvdlpcmdec/Makefile
 gst/dvdsub/Makefile
 gst/realmedia/Makefile
 gst/xingmux/Makefile
 ext/Makefile
 ext/a52dec/Makefile
 ext/amrnb/Makefile
 ext/amrwbdec/Makefile
 ext/cdio/Makefile
 ext/dvdread/Makefile
 ext/mpeg2dec/Makefile
 ext/sidplay/Makefile
 ext/x264/Makefile
 docs/Makefile
 docs/plugins/Makefile
 docs/version.entities
 tests/Makefile
 tests/check/Makefile
 tests/files/Makefile
 m4/Makefile
 po/Makefile.in
 pkgconfig/Makefile
 pkgconfig/gstreamer-plugins-ugly-uninstalled.pc
 )

 AC_OUTPUT

 AG_GST_OUTPUT_PLUGINS

 ORC_OUTPUT
	AC_PREREQ([2.69])

	dnl please read gstreamer/docs/random/autotools before changing this file

	dnl initialize autoconf
	dnl releases only do -Wall, cvs and prerelease does -Werror too
	dnl use a three digit version number for releases, and four for cvs/prerelease
	AC_INIT([GStreamer Ugly Plug-ins],[1.14.1],[http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer],[gst-plugins-ugly])

	AG_GST_INIT

	dnl initialize automake
	AM_INIT_AUTOMAKE([-Wno-portability 1.14 no-dist-gzip dist-xz tar-ustar subdir-objects])

	dnl define PACKAGE_VERSION_* variables
	AS_VERSION

	dnl check if this is a release version
	AS_NANO(GST_GIT="no", GST_GIT="yes")

	dnl can autoconf find the source ?
	AC_CONFIG_SRCDIR([gst/asfdemux/gstasfdemux.c])

	dnl define the output header for config
	AC_CONFIG_HEADERS(config.h)

	dnl AM_MAINTAINER_MODE only provides the option to configure to enable it
	AM_MAINTAINER_MODE([enable])

	dnl sets host_* variables
	AC_CANONICAL_HOST

	dnl use pretty build output with automake >= 1.11
	m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])],
	[AM_DEFAULT_VERBOSITY=1
	AC_SUBST(AM_DEFAULT_VERBOSITY)])

	dnl our libraries and install dirs use GST_API_VERSION in the filename
	dnl to allow side-by-side installation of different API versions
	GST_API_VERSION=1.0
	AC_SUBST(GST_API_VERSION)
	AC_DEFINE_UNQUOTED(GST_API_VERSION, "$GST_API_VERSION",
	[GStreamer API Version])

	AS_LIBTOOL(GST, 1401, 0, 1401)

	dnl * required versions of GStreamer stuff *
	GST_REQ=1.14.1
	GSTPB_REQ=1.14.1

	dnl * autotools stuff **

	dnl allow for different autotools
	AS_AUTOTOOLS_ALTERNATE

	dnl Add parameters for aclocal
	AC_SUBST(ACLOCAL_AMFLAGS, "-I m4 -I common/m4")

	dnl set up gettext
	dnl the version check needs to stay here because autopoint greps for it
	AM_GNU_GETTEXT_VERSION(0.17)
	AM_GNU_GETTEXT([external])
	AG_GST_GETTEXT([gst-plugins-ugly-$GST_API_VERSION])

	dnl * check for arguments to configure *

	AG_GST_ARG_DISABLE_FATAL_WARNINGS
	AG_GST_ARG_ENABLE_EXTRA_CHECKS

	AG_GST_ARG_DEBUG
	AG_GST_ARG_PROFILING
	AG_GST_ARG_VALGRIND
	AG_GST_ARG_GCOV

	AG_GST_ARG_EXAMPLES

	AG_GST_ARG_WITH_PKG_CONFIG_PATH
	AG_GST_ARG_WITH_PACKAGE_NAME
	AG_GST_ARG_WITH_PACKAGE_ORIGIN

	AG_GST_ARG_WITH_PLUGINS

	AG_GST_ARG_ENABLE_EXTERNAL

	AG_GST_ARG_ENABLE_EXPERIMENTAL

	dnl * checks for platform *

	dnl * hardware/architecture *

	dnl common/m4/gst-arch.m4
	dnl check CPU type
	AG_GST_ARCH

	dnl Determine endianness
	AC_C_BIGENDIAN

	dnl * software *

	dnl check for large file support
	dnl affected plugins must include config.h
	AC_SYS_LARGEFILE

	dnl * checks for programs *

	dnl find a compiler
	AC_PROG_CC
	AC_PROG_CC_STDC

	dnl determine c++ compiler
	AC_PROG_CXX
	dnl determine if c++ is available on this system
	AC_CHECK_PROG(HAVE_CXX, $CXX, yes, no)

	dnl check if the compiler supports '-c' and '-o' options
	AM_PROG_CC_C_O

	AC_PATH_PROG(VALGRIND_PATH, valgrind, no)
	AM_CONDITIONAL(HAVE_VALGRIND, test ! "x$VALGRIND_PATH" = "xno")

	dnl check if the compiler supports do while(0) macros
	AG_GST_CHECK_DOWHILE_MACROS

	dnl check for documentation tools
	GTK_DOC_CHECK([1.12])
	AG_GST_PLUGIN_DOCS([1.12])

	dnl * checks for libraries *

	dnl check for libm, for sin()
	LT_LIB_M
	AC_SUBST(LIBM)

	dnl * checks for header files *

	dnl used by ext/a52dec
	AX_CREATE_STDINT_H

	dnl Check for malloc.h
	AC_CHECK_HEADERS([malloc.h])

	dnl * checks for types/defines *

	dnl * checks for structures *

	dnl * checks for compiler characteristics *

	dnl * checks for library functions *

	dnl Check for a way to display the function name in debug output
	AG_GST_CHECK_FUNCTION

	dnl * checks for dependency libraries *

	dnl GLib is required
	GLIB_REQ=2.40.0
	AG_GST_GLIB_CHECK([$GLIB_REQ])

	ORC_CHECK([0.4.16])

	dnl checks for gstreamer
	dnl uninstalled is selected preferentially -- see pkg-config(1)
	AG_GST_CHECK_GST($GST_API_VERSION, [$GST_REQ], yes)
	AG_GST_CHECK_GST_BASE($GST_API_VERSION, [$GST_REQ], yes)
	AG_GST_CHECK_GST_CHECK($GST_API_VERSION, [$GST_REQ], no)
	AG_GST_CHECK_GST_PLUGINS_BASE($GST_API_VERSION, [$GSTPB_REQ], yes)
	AM_CONDITIONAL(HAVE_GST_CHECK, test "x$HAVE_GST_CHECK" = "xyes")

	dnl Check for documentation xrefs
	GLIB_PREFIX="`$PKG_CONFIG --variable=prefix glib-2.0`"
	GST_PREFIX="`$PKG_CONFIG --variable=prefix gstreamer-$GST_API_VERSION`"
	GSTPB_PREFIX="`$PKG_CONFIG --variable=prefix gstreamer-plugins-base-$GST_API_VERSION`"
	AC_SUBST(GLIB_PREFIX)
	AC_SUBST(GST_PREFIX)
	AC_SUBST(GSTPB_PREFIX)

	dnl Needed by plugins that use g_module_*() API
	PKG_CHECK_MODULES(GMODULE_NO_EXPORT, gmodule-no-export-2.0)

	dnl Check for -Bsymbolic-functions linker flag used to avoid
	dnl intra-library PLT jumps, if available.
	AC_ARG_ENABLE(Bsymbolic,
	[AS_HELP_STRING([--disable-Bsymbolic],[avoid linking with -Bsymbolic])],,
	[SAVED_LDFLAGS="${LDFLAGS}" SAVED_LIBS="${LIBS}"
	AC_MSG_CHECKING([for -Bsymbolic-functions linker flag])
	LDFLAGS=-Wl,-Bsymbolic-functions
	LIBS=
	AC_TRY_LINK([], [return 0],
	AC_MSG_RESULT(yes)
	enable_Bsymbolic=yes,
	AC_MSG_RESULT(no)
	enable_Bsymbolic=no)
	LDFLAGS="${SAVED_LDFLAGS}" LIBS="${SAVED_LIBS}"])

	dnl * set variables based on configure arguments *

	dnl set license and copyright notice
	GST_LICENSE="LGPL"
	AC_DEFINE_UNQUOTED(GST_LICENSE, "$GST_LICENSE", [GStreamer license])
	AC_SUBST(GST_LICENSE)

	dnl set location of plugin directory
	AG_GST_SET_PLUGINDIR

	dnl set release date/time
	AG_GST_SET_PACKAGE_RELEASE_DATETIME_WITH_NANO([$PACKAGE_VERSION_NANO],
	["${srcdir}/gst-plugins-ugly.doap"],
	[$PACKAGE_VERSION_MAJOR.$PACKAGE_VERSION_MINOR.$PACKAGE_VERSION_MICRO])

	dnl define an ERROR_CFLAGS Makefile variable
	AG_GST_SET_ERROR_CFLAGS($FATAL_WARNINGS, [
	-Wmissing-declarations -Wmissing-prototypes -Wredundant-decls
	-Wwrite-strings -Wformat-nonliteral -Wformat-security -Wold-style-definition
	-Winit-self -Wmissing-include-dirs -Waddress
	-Waggregate-return -Wno-multichar -Wnested-externs ])

	dnl define an ERROR_CXXFLAGS Makefile variable
	AG_GST_SET_ERROR_CXXFLAGS($FATAL_WARNINGS, [
	-Wmissing-declarations -Wredundant-decls
	-Wwrite-strings -Wformat-nonliteral -Wformat-security
	-Winit-self -Wmissing-include-dirs -Waddress -Waggregate-return
	-Wno-multichar])

	dnl define correct level for debugging messages
	AG_GST_SET_LEVEL_DEFAULT($GST_GIT)

	dnl used in examples
	AG_GST_DEFAULT_ELEMENTS

	dnl * plug-ins to include *

	dnl these are all the gst plug-ins, compilable without additional libs
	AG_GST_CHECK_PLUGIN(asfdemux)
	AG_GST_CHECK_PLUGIN(dvdlpcmdec)
	AG_GST_CHECK_PLUGIN(dvdsub)
	AG_GST_CHECK_PLUGIN(xingmux)
	AG_GST_CHECK_PLUGIN(realmedia)

	AC_CHECK_HEADERS([winsock2.h], HAVE_WINSOCK2_H=yes)

	if test "x$HAVE_WINSOCK2_H" = "xyes"; then
	WIN32_LIBS="-lws2_32"
	AC_SUBST(WIN32_LIBS)
	fi

	dnl * ext plug-ins *
	dnl keep this list sorted alphabetically !

	if test "x$BUILD_EXTERNAL" = "xyes"; then

	echo
	AC_MSG_NOTICE([Checking libraries for plugins in ext/])
	echo

	dnl * a52dec *
	translit(dnm, m, l) AM_CONDITIONAL(USE_A52DEC, true)
	AG_GST_CHECK_FEATURE(A52DEC, [a52dec], a52dec, [
	AC_CHECK_A52DEC(HAVE_A52DEC=yes, HAVE_A52DEC=no)
	])

	dnl * amr-nb *
	translit(dnm, m, l) AM_CONDITIONAL(USE_AMRNB, true)
	AG_GST_CHECK_FEATURE(AMRNB, [amrnb library], amrnb, [
	AG_GST_PKG_CHECK_MODULES(AMRNB, opencore-amrnb >= 0.1.3)
	])

	dnl * amr-wb dec *
	translit(dnm, m, l) AM_CONDITIONAL(USE_AMRWB, true)
	AG_GST_CHECK_FEATURE(AMRWB, [amrwb library], amrwbdec, [
	AG_GST_PKG_CHECK_MODULES(AMRWB, opencore-amrwb >= 0.1.3)
	])

	dnl * cdio *
	translit(dnm, m, l) AM_CONDITIONAL(USE_CDIO, true)
	AG_GST_CHECK_FEATURE(CDIO, [cdio library], cdio, [
	AG_GST_PKG_CHECK_MODULES(CDIO, libcdio >= 0.76)
	])

	dnl * dvdread *
	translit(dnm, m, l) AM_CONDITIONAL(USE_DVDREAD, true)
	AG_GST_CHECK_FEATURE(DVDREAD, [dvdread library], dvdreadsrc, [
	AG_GST_CHECK_LIBHEADER(DVDREAD, dvdread, DVDOpen, , dvdread/dvd_reader.h, DVDREAD_LIBS="-ldvdread")
	AC_SUBST(DVDREAD_LIBS)
	])

	dnl * mpeg2dec *
	translit(dnm, m, l) AM_CONDITIONAL(USE_MPEG2DEC, true)
	AG_GST_CHECK_FEATURE(MPEG2DEC, [mpeg2dec], mpeg2dec, [
	AG_GST_PKG_CHECK_MODULES(MPEG2DEC, libmpeg2 >= 0.5.1)
	])

	dnl * sidplay : works with libsidplay 1.36.x (not 2.x.x) *
	translit(dnm, m, l) AM_CONDITIONAL(USE_SIDPLAY, true)
	AG_GST_CHECK_FEATURE(SIDPLAY, [libsidplay], sid, [
	GST_PATH_SIDPLAY()
	])

	dnl * x264 (MPEG-4 part 10/h.264/AVC encoder) *
	translit(dnm, m, l) AM_CONDITIONAL(USE_X264, true)
	AG_GST_CHECK_FEATURE(X264, [x264 plug-in], x264, [
	AG_GST_PKG_CHECK_MODULES(X264, x264 >= 0.120)

	dnl Paths to additional x264 library variants, e.g. 10/12 bit
	AC_ARG_WITH([x264-libraries],
	AS_HELP_STRING([--with-x264-libraries=PATHS], [Colon separated list of additional x264 library paths, e.g. for 10-bit version]),
	[
	if test "x$withval" != "x"
	then
	AC_DEFINE_UNQUOTED(HAVE_X264_ADDITIONAL_LIBRARIES, "$withval", [Additional x264 libraries])
	fi
	], []
	)
	])

	else

	dnl not building plugins with external dependencies,
	dnl but we still need to set the conditionals

	AM_CONDITIONAL(USE_A52DEC, false)
	AM_CONDITIONAL(USE_AMRNB, false)
	AM_CONDITIONAL(USE_AMRWB, false)
	AM_CONDITIONAL(USE_CDIO, false)
	AM_CONDITIONAL(USE_DVDREAD, false)
	AM_CONDITIONAL(USE_MPEG2DEC, false)
	AM_CONDITIONAL(USE_SIDPLAY, false)
	AM_CONDITIONAL(USE_X264, false)

	fi dnl of EXT plugins

	dnl *** finalize CFLAGS, LDFLAGS, LIBS

	dnl Overview:
	dnl GST_OPTION_CFLAGS: common flags for profiling, debugging, errors, ...
	dnl GST_*: flags shared by built objects to link against GStreamer
	dnl GST_ALL_LDFLAGS: linker flags shared by all
	dnl GST_LIB_LDFLAGS: additional linker flags for all libaries
	dnl GST_LT_LDFLAGS: library versioning of our libraries
	dnl GST_PLUGIN_LDFLAGS: flags to be used for all plugins

	dnl GST_OPTION_CFLAGS
	if test "x$USE_DEBUG" = xyes; then
	PROFILE_CFLAGS="-g"
	fi
	AC_SUBST(PROFILE_CFLAGS)

	if test "x$PACKAGE_VERSION_NANO" = "x1"; then
	dnl Define _only_ during CVS (not pre-releases or releases)
	DEPRECATED_CFLAGS="-DGST_DISABLE_DEPRECATED"
	else
	DEPRECATED_CFLAGS=""
	fi
	AC_SUBST(DEPRECATED_CFLAGS)

	VISIBILITY_CFLAGS=""
	AS_COMPILER_FLAG([-fvisibility=hidden], [VISIBILITY_CFLAGS="-fvisibility=hidden"])
	AC_SUBST(VISIBILITY_CFLAGS)

	VISIBILITY_CXXFLAGS=""
	if test "x$HAVE_CXX" = "xyes"; then
	AS_CXX_COMPILER_FLAG([-fvisibility=hidden], [VISIBILITY_CXXFLAGS="-fvisibility=hidden"])
	fi
	AC_SUBST(VISIBILITY_CXXFLAGS)

	dnl disable strict aliasing
	AS_COMPILER_FLAG([-fno-strict-aliasing], [EXTRA_CFLAGS="-fno-strict-aliasing"])
	AC_SUBST(EXTRA_CFLAGS)

	dnl every flag in GST_OPTION_CFLAGS and GST_OPTION_CXXFLAGS can be overridden
	dnl at make time with e.g. make ERROR_CFLAGS=""
	GST_OPTION_CFLAGS="\$(WARNING_CFLAGS) \$(ERROR_CFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
	GST_OPTION_CXXFLAGS="\$(WARNING_CXXFLAGS) \$(ERROR_CXXFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
	AC_SUBST(GST_OPTION_CFLAGS)
	AC_SUBST(GST_OPTION_CXXFLAGS)

	dnl FIXME: do we want to rename to GST_ALL_* ?
	dnl prefer internal headers to already installed ones
	dnl also add builddir include for enumtypes and marshal
	dnl add GST_OPTION_CFLAGS, but overridable
	GST_CFLAGS="$GST_CFLAGS"
	GST_CXXFLAGS="-I\$(top_srcdir)/gst-libs -I\$(top_builddir)/gst-libs $GST_CFLAGS $EXTRA_CFLAGS $GLIB_EXTRA_CFLAGS \$(GST_OPTION_CXXFLAGS) \$(VISIBILITY_CXXFLAGS)"
	GST_CFLAGS="-I\$(top_srcdir)/gst-libs -I\$(top_builddir)/gst-libs $GST_CFLAGS $EXTRA_CFLAGS $GLIB_EXTRA_CFLAGS \$(GST_OPTION_CFLAGS) \$(VISIBILITY_CFLAGS)"
	AC_SUBST(GST_CFLAGS)
	AC_SUBST(GST_CXXFLAGS)
	AC_SUBST(GST_LIBS)

	dnl LDFLAGS really should only contain flags, not libs - they get added before
	dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
	GST_ALL_LDFLAGS="-no-undefined"
	if test "x${enable_Bsymbolic}" = "xyes"; then
	GST_ALL_LDFLAGS="$GST_ALL_LDFLAGS -Wl,-Bsymbolic-functions"
	fi
	AC_SUBST(GST_ALL_LDFLAGS)

	dnl this really should only contain flags, not libs - they get added before
	dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
	GST_PLUGIN_LDFLAGS="-module -avoid-version $GST_ALL_LDFLAGS"
	AC_SUBST(GST_PLUGIN_LDFLAGS)

	dnl * output files *

	AC_CONFIG_FILES(
	Makefile
	common/Makefile
	common/m4/Makefile
	gst-libs/Makefile
	gst-libs/gst/Makefile
	gst/Makefile
	gst/asfdemux/Makefile
	gst/dvdlpcmdec/Makefile
	gst/dvdsub/Makefile
	gst/realmedia/Makefile
	gst/xingmux/Makefile
	ext/Makefile
	ext/a52dec/Makefile
	ext/amrnb/Makefile
	ext/amrwbdec/Makefile
	ext/cdio/Makefile
	ext/dvdread/Makefile
	ext/mpeg2dec/Makefile
	ext/sidplay/Makefile
	ext/x264/Makefile
	docs/Makefile
	docs/plugins/Makefile
	docs/version.entities
	tests/Makefile
	tests/check/Makefile
	tests/files/Makefile
	m4/Makefile
	po/Makefile.in
	pkgconfig/Makefile
	pkgconfig/gstreamer-plugins-ugly-uninstalled.pc
	)

	AC_OUTPUT

	AG_GST_OUTPUT_PLUGINS

	ORC_OUTPUT