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45a4d305fd
Original commit message from CVS: the cothreads library now builds, but it's untested the public api is in cothreads.h
182 lines
6.3 KiB
Text
182 lines
6.3 KiB
Text
dnl Perform a check for a feature for GStreamer
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dnl Richard Boulton <richard-alsa@tartarus.org>
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dnl Thomas Vander Stichele <thomas@apestaart.org> added useful stuff
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dnl Last modification: 25/06/2001
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dnl GST_CHECK_FEATURE(FEATURE-NAME, FEATURE-DESCRIPTION,
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dnl DEPENDENT-PLUGINS, TEST-FOR-FEATURE,
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dnl DISABLE-BY-DEFAULT, ACTION-IF-USE, ACTION-IF-NOTUSE)
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dnl
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dnl This macro adds a command line argument to enable the user to enable
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dnl or disable a feature, and if the feature is enabled, performs a supplied
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dnl test to check if the feature is available.
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dnl
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dnl The test should define HAVE_<FEATURE-NAME> to "yes" or "no" depending
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dnl on whether the feature is available.
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dnl
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dnl The macro will set USE_<FEATURE-NAME> to "yes" or "no" depending on
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dnl whether the feature is to be used.
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dnl Thomas changed this, so that when USE_<FEATURE-NAME> was already set
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dnl to no, then it stays that way.
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dnl
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dnl The macro will call AM_CONDITIONAL(USE_<<FEATURE-NAME>, ...) to allow
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dnl the feature to control what is built in Makefile.ams. If you want
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dnl additional actions resulting from the test, you can add them with the
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dnl ACTION-IF-USE and ACTION-IF-NOTUSE parameters.
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dnl
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dnl FEATURE-NAME is the name of the feature, and should be in
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dnl purely upper case characters.
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dnl FEATURE-DESCRIPTION is used to describe the feature in help text for
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dnl the command line argument.
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dnl DEPENDENT-PLUGINS lists any plugins which depend on this feature.
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dnl TEST-FOR-FEATURE is a test which sets HAVE_<FEATURE-NAME> to "yes"
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dnl or "no" depending on whether the feature is
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dnl available.
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dnl DISABLE-BY-DEFAULT if "disabled", the feature is disabled by default,
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dnl if any other value, the feature is enabled by default.
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dnl ACTION-IF-USE any extra actions to perform if the feature is to be
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dnl used.
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dnl ACTION-IF-NOTUSE any extra actions to perform if the feature is not to
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dnl be used.
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dnl
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dnl
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dnl thomas :
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dnl we also added a history.
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dnl GST_PLUGINS_YES will contain all plugins to be built
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dnl that were checked through GST_CHECK_FEATURE
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dnl GST_PLUGINS_NO will contain those that won't be built
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AC_DEFUN(GST_CHECK_FEATURE,
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[dnl
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builtin(define, [gst_endisable], ifelse($5, [disabled], [enable], [disable]))dnl
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dnl if it is set to NO, then don't even consider it for building
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NOUSE=
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if test "x$USE_[$1]" = "xno"; then
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NOUSE="yes"
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fi
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AC_ARG_ENABLE(translit([$1], A-Z, a-z),
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[ ]builtin(format, --%-26s gst_endisable %s, gst_endisable-translit([$1], A-Z, a-z), [$2]ifelse([$3],,,: [$3])),
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[ case "${enableval}" in
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yes) USE_[$1]=yes;;
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no) USE_[$1]=no;;
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*) AC_MSG_ERROR(bad value ${enableval} for --enable-translit([$1], A-Z, a-z)) ;;
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esac],
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[ USE_$1=]ifelse($5, [disabled], [no], [yes])) dnl DEFAULT
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dnl *** set it back to no if it was preset to no
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if test "x$NOUSE" = "xyes"; then
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USE_[$1]="no"
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AC_MSG_WARN(*** $3 pre-configured not to be built)
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fi
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NOUSE=
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dnl *** If it's enabled
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if test x$USE_[$1] = xyes; then
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gst_check_save_LIBS=$LIBS
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gst_check_save_LDFLAGS=$LDFLAGS
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gst_check_save_CFLAGS=$CFLAGS
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gst_check_save_CPPFLAGS=$CPPFLAGS
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gst_check_save_CXXFLAGS=$CXXFLAGS
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HAVE_[$1]=no
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$4
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LIBS=$gst_check_save_LIBS
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LDFLAGS=$gst_check_save_LDFLAGS
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CFLAGS=$gst_check_save_CFLAGS
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CPPFLAGS=$gst_check_save_CPPFLAGS
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CXXFLAGS=$gst_check_save_CXXFLAGS
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dnl If it isn't found, unset USE_[$1]
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if test x$HAVE_[$1] = xno; then
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USE_[$1]=no
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fi
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fi
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dnl *** Warn if it's disabled or not found
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if test x$USE_[$1] = xyes; then
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ifelse([$6], , :, [$6])
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GST_PLUGINS_YES="$GST_PLUGINS_YES \n\t[$3]"
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else
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ifelse([$3], , :, [AC_MSG_NOTICE(
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These plugins will not be built: [$3]
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)])
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GST_PLUGINS_NO="$GST_PLUGINS_NO \n\t[$3]"
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ifelse([$7], , :, [$7])
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fi
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dnl *** Define the conditional as appropriate
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AM_CONDITIONAL(USE_[$1], test x$USE_[$1] = xyes)
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])
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dnl Use a -config program which accepts --cflags and --libs parameters
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dnl to set *_CFLAGS and *_LIBS and check existence of a feature.
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dnl Richard Boulton <richard-alsa@tartarus.org>
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dnl Last modification: 26/06/2001
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dnl GST_CHECK_CONFIGPROG(FEATURE-NAME, CONFIG-PROG-FILENAME, MODULES)
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dnl
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dnl This check was written for GStreamer: it should be renamed and checked
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dnl for portability if you decide to use it elsewhere.
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dnl
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AC_DEFUN(GST_CHECK_CONFIGPROG,
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[
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AC_PATH_PROG([$1]_CONFIG, [$2], no)
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if test x$[$1]_CONFIG = xno; then
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[$1]_LIBS=
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[$1]_CFLAGS=
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HAVE_[$1]=no
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else
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[$1]_LIBS=`[$2] --libs [$3]`
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[$1]_CFLAGS=`[$2] --cflags [$3]`
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HAVE_[$1]=yes
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fi
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AC_SUBST([$1]_LIBS)
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AC_SUBST([$1]_CFLAGS)
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])
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dnl Use AC_CHECK_LIB and AC_CHECK_HEADER to do both tests at once
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dnl sets HAVE_module if we have it
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dnl Richard Boulton <richard-alsa@tartarus.org>
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dnl Last modification: 26/06/2001
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dnl GST_CHECK_LIBHEADER(FEATURE-NAME, LIB NAME, LIB FUNCTION, EXTRA LD FLAGS,
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dnl HEADER NAME, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
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dnl
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dnl This check was written for GStreamer: it should be renamed and checked
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dnl for portability if you decide to use it elsewhere.
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dnl
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AC_DEFUN(GST_CHECK_LIBHEADER,
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[
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AC_CHECK_LIB([$2], [$3], HAVE_[$1]=yes, HAVE_[$1]=no,[$4])
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if test "x$HAVE_[$1]" = "xyes"; then
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AC_CHECK_HEADER([$5], :, HAVE_[$1]=no)
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if test "x$HAVE_[$1]" = "xyes"; then
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dnl execute what needs to be
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ifelse([$6], , :, [$6])
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else
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ifelse([$7], , :, [$7])
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fi
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else
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AC_MSG_WARN([$1] not found)
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fi
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AC_SUBST(HAVE_[$1])
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]
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)
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dnl
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dnl Add a subsystem --disable flag and all the necessary symbols and substitions
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dnl
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dnl GST_SUBSYSTEM_DISABLE(SYSNAME, [subsystem name])
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dnl
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AC_DEFUN(GST_SUBSYSTEM_DISABLE,
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[AC_ARG_ENABLE(translit([$1], A-Z, a-z),
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[ ]builtin(format, --disable-%-17s disable %s, translit([$1], A-Z, a-z), $2),
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[ case "${enableval}" in
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yes) GST_DISABLE_[$1]=no ;;
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no) GST_DISABLE_[$1]=yes ;;
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*) AC_MSG_ERROR(bad value ${enableval} for --enable-translit([$1], A-Z, a-z)) ;;
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esac],
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[GST_DISABLE_[$1]=no]) dnl Default value
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if test x$GST_DISABLE_[$1] = xyes; then
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AC_DEFINE(GST_DISABLE_[$1], 1, [Disable $2])
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GST_DISABLE_[$1]_DEFINE=-DGST_DISABLE_[$1]
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fi
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AM_CONDITIONAL(GST_DISABLE_[$1], test x$GST_DISABLE_[$1] = xyes)
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AC_SUBST(GST_DISABLE_[$1]_DEFINE)
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GST_SUBSYSTEM_DISABLE_DEFINES="$GST_SUBSYTEM_DISABLE_DEFINES $GST_DISABLE_[$1]_DEFINE"
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])
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