common/m4/gst-check.m4 - mtk-gstreamer-debian - Git at Google

 dnl pkg-config-based checks for GStreamer modules and dependency modules

 dnl generic:
 dnl AG_GST_PKG_CHECK_MODULES([PREFIX], [WHICH], [REQUIRED])
 dnl sets HAVE_[$PREFIX], [$PREFIX]_*
 dnl AG_GST_CHECK_MODULES([PREFIX], [MODULE], [MINVER], [NAME], [REQUIRED])
 dnl sets HAVE_[$PREFIX], [$PREFIX]_*

 dnl specific:
 dnl AG_GST_CHECK_GST([MAJMIN], [MINVER], [REQUIRED])
 dnl   also sets/ACSUBSTs GST_TOOLS_DIR and GST_PLUGINS_DIR
 dnl AG_GST_CHECK_GST_BASE([MAJMIN], [MINVER], [REQUIRED])
 dnl AG_GST_CHECK_GST_CONTROLLER([MAJMIN], [MINVER], [REQUIRED])
 dnl AG_GST_CHECK_GST_NET([MAJMIN], [MINVER], [REQUIRED])
 dnl AG_GST_CHECK_GST_CHECK([MAJMIN], [MINVER], [REQUIRED])
 dnl AG_GST_CHECK_GST_PLUGINS_BASE([MAJMIN], [MINVER], [REQUIRED])
 dnl   also sets/ACSUBSTs GSTPB_PLUGINS_DIR

 AC_DEFUN([AG_GST_PKG_CHECK_MODULES],
 [
   which="[$2]"
   dnl not required by default, since we use this mostly for plugin deps
   required=ifelse([$3], , "no", [$3])

   PKG_CHECK_MODULES([$1], $which,
     [
       HAVE_[$1]="yes"
     ],
     [
       HAVE_[$1]="no"
       if test "x$required" = "xyes"; then
         AC_MSG_ERROR($[$1]_PKG_ERRORS)
       else
         AC_MSG_NOTICE($[$1]_PKG_ERRORS)
       fi
     ])

   dnl AC_SUBST of CFLAGS and LIBS was not done before automake 1.7
   dnl It gets done automatically in automake >= 1.7, which we now require
 ]))

 AC_DEFUN([AG_GST_CHECK_MODULES],
 [
   module=[$2]
   minver=[$3]
   name="[$4]"
   required=ifelse([$5], , "yes", [$5]) dnl required by default

   PKG_CHECK_MODULES([$1], $module >= $minver,
     [
       HAVE_[$1]="yes"
     ],
     [
       HAVE_[$1]="no"
       AC_MSG_NOTICE($[$1]_PKG_ERRORS)
       if test "x$required" = "xyes"; then
         AC_MSG_ERROR([no $module >= $minver ($name) found])
       else
         AC_MSG_NOTICE([no $module >= $minver ($name) found])
       fi
     ])

   dnl AC_SUBST of CFLAGS and LIBS was not done before automake 1.7
   dnl It gets done automatically in automake >= 1.7, which we now require
 ]))

 AC_DEFUN([AG_GST_CHECK_GST],
 [
   AG_GST_CHECK_MODULES(GST, gstreamer-[$1], [$2], [GStreamer], [$3])
   dnl allow setting before calling this macro to override
   if test -z $GST_TOOLS_DIR; then
     GST_TOOLS_DIR=`$PKG_CONFIG --variable=toolsdir gstreamer-[$1]`
     if test -z $GST_TOOLS_DIR; then
       AC_MSG_ERROR(
         [no tools dir set in GStreamer pkg-config file, core upgrade needed.])
     fi
   fi
   AC_MSG_NOTICE([using GStreamer tools in $GST_TOOLS_DIR])
   AC_SUBST(GST_TOOLS_DIR)

   dnl check for where core plug-ins got installed
   dnl this is used for unit tests
   dnl allow setting before calling this macro to override
   if test -z $GST_PLUGINS_DIR; then
     GST_PLUGINS_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-[$1]`
     if test -z $GST_PLUGINS_DIR; then
       AC_MSG_ERROR(
         [no pluginsdir set in GStreamer pkg-config file, core upgrade needed.])
     fi
   fi
   AC_MSG_NOTICE([using GStreamer plug-ins in $GST_PLUGINS_DIR])
   AC_SUBST(GST_PLUGINS_DIR)
 ])

 AC_DEFUN([AG_GST_CHECK_GST_BASE],
 [
   AG_GST_CHECK_MODULES(GST_BASE, gstreamer-base-[$1], [$2],
     [GStreamer Base Libraries], [$3])
 ])

 AC_DEFUN([AG_GST_CHECK_GST_CONTROLLER],
 [
   AG_GST_CHECK_MODULES(GST_CONTROLLER, gstreamer-controller-[$1], [$2],
     [GStreamer Controller Library], [$3])
 ])

 AC_DEFUN([AG_GST_CHECK_GST_NET],
 [
   AG_GST_CHECK_MODULES(GST_NET, gstreamer-net-[$1], [$2],
     [GStreamer Network Library], [$3])
 ])

 AC_DEFUN([AG_GST_CHECK_GST_CHECK],
 [
   AG_GST_CHECK_MODULES(GST_CHECK, gstreamer-check-[$1], [$2],
     [GStreamer Check unittest Library], [$3])
 ])

 dnl ===========================================================================
 dnl AG_GST_CHECK_UNINSTALLED_SETUP([ACTION-IF-UNINSTALLED], [ACTION-IF-NOT])
 dnl
 dnl ACTION-IF-UNINSTALLED  (optional) extra actions to perform if the setup
 dnl                        is an uninstalled setup
 dnl ACTION-IF-NOT          (optional) extra actions to perform if the setup
 dnl                        is not an uninstalled setup
 dnl ===========================================================================
 AC_DEFUN([AG_GST_CHECK_UNINSTALLED_SETUP],
 [
   AC_MSG_CHECKING([whether this is an uninstalled GStreamer setup])
   AC_CACHE_VAL(gst_cv_is_uninstalled_setup,[
     gst_cv_is_uninstalled_setup=no
     if (set -u; : $GST_PLUGIN_SYSTEM_PATH) 2>/dev/null ; then
       if test -z "$GST_PLUGIN_SYSTEM_PATH" \
            -a -n "$GST_PLUGIN_SCANNER"     \
            -a -n "$GST_PLUGIN_PATH"        \
            -a -n "$GST_REGISTRY"           \
            -a -n "$DYLD_LIBRARY_PATH"      \
            -a -n "$LD_LIBRARY_PATH"; then
         gst_cv_is_uninstalled_setup=yes;
       fi
     fi
   ])
   AC_MSG_RESULT($gst_cv_is_uninstalled_setup)
   if test "x$gst_cv_is_uninstalled_setup" = "xyes"; then
     ifelse([$1], , :, [$1])
   else
     ifelse([$2], , :, [$2])
   fi
 ])

 dnl ===========================================================================
 dnl AG_GST_CHECK_GST_PLUGINS_BASE([GST-API_VERSION], [MIN-VERSION], [REQUIRED])
 dnl
 dnl Sets GST_PLUGINS_BASE_CFLAGS and GST_PLUGINS_BASE_LIBS.
 dnl
 dnl Also sets GSTPB_PLUGINS_DIR (and for consistency also GST_PLUGINS_BASE_DIR)
 dnl for use in Makefile.am. This is only really needed/useful in uninstalled
 dnl setups, since in an installed setup all plugins will be found in
 dnl GST_PLUGINS_DIR anyway.
 dnl ===========================================================================
 AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_BASE],
 [
   AG_GST_CHECK_MODULES(GST_PLUGINS_BASE, gstreamer-plugins-base-[$1], [$2],
     [GStreamer Base Plugins], [$3])

   if test "x$HAVE_GST_PLUGINS_BASE" = "xyes"; then
     dnl check for where base plugins got installed
     dnl this is used for unit tests
     dnl allow setting before calling this macro to override
     if test -z $GSTPB_PLUGINS_DIR; then
       GSTPB_PLUGINS_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-base-[$1]`
       if test -z $GSTPB_PLUGINS_DIR; then
         AC_MSG_ERROR(
           [no pluginsdir set in GStreamer Base Plugins pkg-config file])
       fi
     fi
     AC_MSG_NOTICE([using GStreamer Base Plugins in $GSTPB_PLUGINS_DIR])
     GST_PLUGINS_BASE_DIR="$GSTPB_PLUGINS_DIR/gst:$GSTPB_PLUGINS_DIR/sys:$GSTPB_PLUGINS_DIR/ext"
     AC_SUBST(GST_PLUGINS_BASE_DIR)
     AC_SUBST(GSTPB_PLUGINS_DIR)
   fi
 ])

 dnl ===========================================================================
 dnl AG_GST_CHECK_GST_PLUGINS_GOOD([GST-API_VERSION], [MIN-VERSION])
 dnl
 dnl Will set GST_PLUGINS_GOOD_DIR for use in Makefile.am. Note that this will
 dnl only be set in an uninstalled setup, since -good ships no .pc file and in
 dnl an installed setup all plugins will be found in GST_PLUGINS_DIR anyway.
 dnl ===========================================================================
 AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_GOOD],
 [
   AG_GST_CHECK_MODULES(GST_PLUGINS_GOOD, gstreamer-plugins-good-[$1], [$2],
     [GStreamer Good Plugins], [no])

   if test "x$HAVE_GST_PLUGINS_GOOD" = "xyes"; then
     dnl check for where good plugins got installed
     dnl this is used for unit tests
     dnl allow setting before calling this macro to override
     if test -z $GST_PLUGINS_GOOD_DIR; then
       GST_PLUGINS_GOOD_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-good-[$1]`
       if test -z $GST_PLUGINS_GOOD_DIR; then
         AC_MSG_ERROR([no pluginsdir set in GStreamer Good Plugins pkg-config file])
       fi
     fi
     AC_MSG_NOTICE([using GStreamer Good Plugins in $GST_PLUGINS_GOOD_DIR])
     GST_PLUGINS_GOOD_DIR="$GST_PLUGINS_GOOD_DIR/gst:$GST_PLUGINS_GOOD_DIR/sys:$GST_PLUGINS_GOOD_DIR/ext"
     AC_SUBST(GST_PLUGINS_GOOD_DIR)
   fi
 ])

 dnl ===========================================================================
 dnl AG_GST_CHECK_GST_PLUGINS_UGLY([GST-API_VERSION], [MIN-VERSION])
 dnl
 dnl Will set GST_PLUGINS_UGLY_DIR for use in Makefile.am. Note that this will
 dnl only be set in an uninstalled setup, since -bad ships no .pc file and in
 dnl an installed setup all plugins will be found in GST_PLUGINS_DIR anyway.
 dnl ===========================================================================
 AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_UGLY],
 [
   AG_GST_CHECK_MODULES(GST_PLUGINS_UGLY, gstreamer-plugins-ugly-[$1], [$2],
     [GStreamer Ugly Plugins], [no])

   if test "x$HAVE_GST_PLUGINS_UGLY" = "xyes"; then
     dnl check for where ugly plugins got installed
     dnl this is used for unit tests
     dnl allow setting before calling this macro to override
     if test -z $GST_PLUGINS_UGLY_DIR; then
       GST_PLUGINS_UGLY_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-ugly-[$1]`
       if test -z $GST_PLUGINS_UGLY_DIR; then
         AC_MSG_ERROR([no pluginsdir set in GStreamer Ugly Plugins pkg-config file])
       fi
     fi
     AC_MSG_NOTICE([using GStreamer Ugly Plugins in $GST_PLUGINS_UGLY_DIR])
     GST_PLUGINS_UGLY_DIR="$GST_PLUGINS_UGLY_DIR/gst:$GST_PLUGINS_UGLY_DIR/sys:$GST_PLUGINS_UGLY_DIR/ext"
     AC_SUBST(GST_PLUGINS_UGLY_DIR)
   fi
 ])

 dnl ===========================================================================
 dnl AG_GST_CHECK_GST_PLUGINS_BAD([GST-API_VERSION], [MIN-VERSION])
 dnl
 dnl Will set GST_PLUGINS_BAD_DIR for use in Makefile.am. Note that this will
 dnl only be set in an uninstalled setup, since -ugly ships no .pc file and in
 dnl an installed setup all plugins will be found in GST_PLUGINS_DIR anyway.
 dnl ===========================================================================
 AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_BAD],
 [
   AG_GST_CHECK_MODULES(GST_PLUGINS_BAD, gstreamer-plugins-bad-[$1], [$2],
     [GStreamer Bad Plugins], [no])

   if test "x$HAVE_GST_PLUGINS_BAD" = "xyes"; then
     dnl check for where bad plugins got installed
     dnl this is used for unit tests
     dnl allow setting before calling this macro to override
     if test -z $GST_PLUGINS_BAD_DIR; then
       GST_PLUGINS_BAD_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-bad-[$1]`
       if test -z $GST_PLUGINS_BAD_DIR; then
         AC_MSG_ERROR([no pluginsdir set in GStreamer Bad Plugins pkg-config file])
       fi
     fi
     AC_MSG_NOTICE([using GStreamer Bad Plugins in $GST_PLUGINS_BAD_DIR])
     GST_PLUGINS_BAD_DIR="$GST_PLUGINS_BAD_DIR/gst:$GST_PLUGINS_BAD_DIR/sys:$GST_PLUGINS_BAD_DIR/ext"
     AC_SUBST(GST_PLUGINS_BAD_DIR)
   fi
 ])

 dnl ===========================================================================
 dnl AG_GST_CHECK_GST_PLUGINS_LIBAV([GST-API_VERSION], [MIN-VERSION])
 dnl
 dnl Will set GST_PLUGINS_LIBAV_DIR for use in Makefile.am. Note that this will
 dnl only be set in an uninstalled setup, since -libav ships no .pc file and in
 dnl an installed setup all plugins will be found in GST_PLUGINS_DIR anyway.
 dnl ===========================================================================
 AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_LIBAV],
 [
   AG_GST_CHECK_MODULES(GST_PLUGINS_LIBAV, gstreamer-plugins-libav-[$1], [$2],
     [GStreamer Libav Plugins], [no])

   if test "x$HAVE_GST_PLUGINS_LIBAV" = "xyes"; then
     dnl check for where libav plugins got installed
     dnl this is used for unit tests
     dnl allow setting before calling this macro to override
     if test -z $GST_PLUGINS_LIBAV_DIR; then
       GST_PLUGINS_LIBAV_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-libav-[$1]`
       if test -z $GST_PLUGINS_LIBAV_DIR; then
         AC_MSG_ERROR([no pluginsdir set in GStreamer Libav Plugins pkg-config file])
       fi
     fi
     GST_PLUGINS_LIBAV_DIR="$GST_PLUGINS_LIBAV_DIR/ext/libav"
     AC_MSG_NOTICE([using GStreamer Libav Plugins in $GST_PLUGINS_LIBAV_DIR])
     AC_SUBST(GST_PLUGINS_LIBAV_DIR)
   fi
 ])
	dnl pkg-config-based checks for GStreamer modules and dependency modules

	dnl generic:
	dnl AG_GST_PKG_CHECK_MODULES([PREFIX], [WHICH], [REQUIRED])
	dnl sets HAVE_[$PREFIX], [$PREFIX]_*
	dnl AG_GST_CHECK_MODULES([PREFIX], [MODULE], [MINVER], [NAME], [REQUIRED])
	dnl sets HAVE_[$PREFIX], [$PREFIX]_*

	dnl specific:
	dnl AG_GST_CHECK_GST([MAJMIN], [MINVER], [REQUIRED])
	dnl also sets/ACSUBSTs GST_TOOLS_DIR and GST_PLUGINS_DIR
	dnl AG_GST_CHECK_GST_BASE([MAJMIN], [MINVER], [REQUIRED])
	dnl AG_GST_CHECK_GST_CONTROLLER([MAJMIN], [MINVER], [REQUIRED])
	dnl AG_GST_CHECK_GST_NET([MAJMIN], [MINVER], [REQUIRED])
	dnl AG_GST_CHECK_GST_CHECK([MAJMIN], [MINVER], [REQUIRED])
	dnl AG_GST_CHECK_GST_PLUGINS_BASE([MAJMIN], [MINVER], [REQUIRED])
	dnl also sets/ACSUBSTs GSTPB_PLUGINS_DIR

	AC_DEFUN([AG_GST_PKG_CHECK_MODULES],
	[
	which="[$2]"
	dnl not required by default, since we use this mostly for plugin deps
	required=ifelse([$3], , "no", [$3])

	PKG_CHECK_MODULES([$1], $which,
	[
	HAVE_[$1]="yes"
	],
	[
	HAVE_[$1]="no"
	if test "x$required" = "xyes"; then
	AC_MSG_ERROR($[$1]_PKG_ERRORS)
	else
	AC_MSG_NOTICE($[$1]_PKG_ERRORS)
	fi
	])

	dnl AC_SUBST of CFLAGS and LIBS was not done before automake 1.7
	dnl It gets done automatically in automake >= 1.7, which we now require
	]))

	AC_DEFUN([AG_GST_CHECK_MODULES],
	[
	module=[$2]
	minver=[$3]
	name="[$4]"
	required=ifelse([$5], , "yes", [$5]) dnl required by default

	PKG_CHECK_MODULES([$1], $module >= $minver,
	[
	HAVE_[$1]="yes"
	],
	[
	HAVE_[$1]="no"
	AC_MSG_NOTICE($[$1]_PKG_ERRORS)
	if test "x$required" = "xyes"; then
	AC_MSG_ERROR([no $module >= $minver ($name) found])
	else
	AC_MSG_NOTICE([no $module >= $minver ($name) found])
	fi
	])

	dnl AC_SUBST of CFLAGS and LIBS was not done before automake 1.7
	dnl It gets done automatically in automake >= 1.7, which we now require
	]))

	AC_DEFUN([AG_GST_CHECK_GST],
	[
	AG_GST_CHECK_MODULES(GST, gstreamer-[$1], [$2], [GStreamer], [$3])
	dnl allow setting before calling this macro to override
	if test -z $GST_TOOLS_DIR; then
	GST_TOOLS_DIR=`$PKG_CONFIG --variable=toolsdir gstreamer-[$1]`
	if test -z $GST_TOOLS_DIR; then
	AC_MSG_ERROR(
	[no tools dir set in GStreamer pkg-config file, core upgrade needed.])
	fi
	fi
	AC_MSG_NOTICE([using GStreamer tools in $GST_TOOLS_DIR])
	AC_SUBST(GST_TOOLS_DIR)

	dnl check for where core plug-ins got installed
	dnl this is used for unit tests
	dnl allow setting before calling this macro to override
	if test -z $GST_PLUGINS_DIR; then
	GST_PLUGINS_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-[$1]`
	if test -z $GST_PLUGINS_DIR; then
	AC_MSG_ERROR(
	[no pluginsdir set in GStreamer pkg-config file, core upgrade needed.])
	fi
	fi
	AC_MSG_NOTICE([using GStreamer plug-ins in $GST_PLUGINS_DIR])
	AC_SUBST(GST_PLUGINS_DIR)
	])

	AC_DEFUN([AG_GST_CHECK_GST_BASE],
	[
	AG_GST_CHECK_MODULES(GST_BASE, gstreamer-base-[$1], [$2],
	[GStreamer Base Libraries], [$3])
	])

	AC_DEFUN([AG_GST_CHECK_GST_CONTROLLER],
	[
	AG_GST_CHECK_MODULES(GST_CONTROLLER, gstreamer-controller-[$1], [$2],
	[GStreamer Controller Library], [$3])
	])

	AC_DEFUN([AG_GST_CHECK_GST_NET],
	[
	AG_GST_CHECK_MODULES(GST_NET, gstreamer-net-[$1], [$2],
	[GStreamer Network Library], [$3])
	])

	AC_DEFUN([AG_GST_CHECK_GST_CHECK],
	[
	AG_GST_CHECK_MODULES(GST_CHECK, gstreamer-check-[$1], [$2],
	[GStreamer Check unittest Library], [$3])
	])

	dnl ===========================================================================
	dnl AG_GST_CHECK_UNINSTALLED_SETUP([ACTION-IF-UNINSTALLED], [ACTION-IF-NOT])
	dnl
	dnl ACTION-IF-UNINSTALLED (optional) extra actions to perform if the setup
	dnl is an uninstalled setup
	dnl ACTION-IF-NOT (optional) extra actions to perform if the setup
	dnl is not an uninstalled setup
	dnl ===========================================================================
	AC_DEFUN([AG_GST_CHECK_UNINSTALLED_SETUP],
	[
	AC_MSG_CHECKING([whether this is an uninstalled GStreamer setup])
	AC_CACHE_VAL(gst_cv_is_uninstalled_setup,[
	gst_cv_is_uninstalled_setup=no
	if (set -u; : $GST_PLUGIN_SYSTEM_PATH) 2>/dev/null ; then
	if test -z "$GST_PLUGIN_SYSTEM_PATH" \
	-a -n "$GST_PLUGIN_SCANNER" \
	-a -n "$GST_PLUGIN_PATH" \
	-a -n "$GST_REGISTRY" \
	-a -n "$DYLD_LIBRARY_PATH" \
	-a -n "$LD_LIBRARY_PATH"; then
	gst_cv_is_uninstalled_setup=yes;
	fi
	fi
	])
	AC_MSG_RESULT($gst_cv_is_uninstalled_setup)
	if test "x$gst_cv_is_uninstalled_setup" = "xyes"; then
	ifelse([$1], , :, [$1])
	else
	ifelse([$2], , :, [$2])
	fi
	])

	dnl ===========================================================================
	dnl AG_GST_CHECK_GST_PLUGINS_BASE([GST-API_VERSION], [MIN-VERSION], [REQUIRED])
	dnl
	dnl Sets GST_PLUGINS_BASE_CFLAGS and GST_PLUGINS_BASE_LIBS.
	dnl
	dnl Also sets GSTPB_PLUGINS_DIR (and for consistency also GST_PLUGINS_BASE_DIR)
	dnl for use in Makefile.am. This is only really needed/useful in uninstalled
	dnl setups, since in an installed setup all plugins will be found in
	dnl GST_PLUGINS_DIR anyway.
	dnl ===========================================================================
	AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_BASE],
	[
	AG_GST_CHECK_MODULES(GST_PLUGINS_BASE, gstreamer-plugins-base-[$1], [$2],
	[GStreamer Base Plugins], [$3])

	if test "x$HAVE_GST_PLUGINS_BASE" = "xyes"; then
	dnl check for where base plugins got installed
	dnl this is used for unit tests
	dnl allow setting before calling this macro to override
	if test -z $GSTPB_PLUGINS_DIR; then
	GSTPB_PLUGINS_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-base-[$1]`
	if test -z $GSTPB_PLUGINS_DIR; then
	AC_MSG_ERROR(
	[no pluginsdir set in GStreamer Base Plugins pkg-config file])
	fi
	fi
	AC_MSG_NOTICE([using GStreamer Base Plugins in $GSTPB_PLUGINS_DIR])
	GST_PLUGINS_BASE_DIR="$GSTPB_PLUGINS_DIR/gst:$GSTPB_PLUGINS_DIR/sys:$GSTPB_PLUGINS_DIR/ext"
	AC_SUBST(GST_PLUGINS_BASE_DIR)
	AC_SUBST(GSTPB_PLUGINS_DIR)
	fi
	])

	dnl ===========================================================================
	dnl AG_GST_CHECK_GST_PLUGINS_GOOD([GST-API_VERSION], [MIN-VERSION])
	dnl
	dnl Will set GST_PLUGINS_GOOD_DIR for use in Makefile.am. Note that this will
	dnl only be set in an uninstalled setup, since -good ships no .pc file and in
	dnl an installed setup all plugins will be found in GST_PLUGINS_DIR anyway.
	dnl ===========================================================================
	AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_GOOD],
	[
	AG_GST_CHECK_MODULES(GST_PLUGINS_GOOD, gstreamer-plugins-good-[$1], [$2],
	[GStreamer Good Plugins], [no])

	if test "x$HAVE_GST_PLUGINS_GOOD" = "xyes"; then
	dnl check for where good plugins got installed
	dnl this is used for unit tests
	dnl allow setting before calling this macro to override
	if test -z $GST_PLUGINS_GOOD_DIR; then
	GST_PLUGINS_GOOD_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-good-[$1]`
	if test -z $GST_PLUGINS_GOOD_DIR; then
	AC_MSG_ERROR([no pluginsdir set in GStreamer Good Plugins pkg-config file])
	fi
	fi
	AC_MSG_NOTICE([using GStreamer Good Plugins in $GST_PLUGINS_GOOD_DIR])
	GST_PLUGINS_GOOD_DIR="$GST_PLUGINS_GOOD_DIR/gst:$GST_PLUGINS_GOOD_DIR/sys:$GST_PLUGINS_GOOD_DIR/ext"
	AC_SUBST(GST_PLUGINS_GOOD_DIR)
	fi
	])

	dnl ===========================================================================
	dnl AG_GST_CHECK_GST_PLUGINS_UGLY([GST-API_VERSION], [MIN-VERSION])
	dnl
	dnl Will set GST_PLUGINS_UGLY_DIR for use in Makefile.am. Note that this will
	dnl only be set in an uninstalled setup, since -bad ships no .pc file and in
	dnl an installed setup all plugins will be found in GST_PLUGINS_DIR anyway.
	dnl ===========================================================================
	AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_UGLY],
	[
	AG_GST_CHECK_MODULES(GST_PLUGINS_UGLY, gstreamer-plugins-ugly-[$1], [$2],
	[GStreamer Ugly Plugins], [no])

	if test "x$HAVE_GST_PLUGINS_UGLY" = "xyes"; then
	dnl check for where ugly plugins got installed
	dnl this is used for unit tests
	dnl allow setting before calling this macro to override
	if test -z $GST_PLUGINS_UGLY_DIR; then
	GST_PLUGINS_UGLY_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-ugly-[$1]`
	if test -z $GST_PLUGINS_UGLY_DIR; then
	AC_MSG_ERROR([no pluginsdir set in GStreamer Ugly Plugins pkg-config file])
	fi
	fi
	AC_MSG_NOTICE([using GStreamer Ugly Plugins in $GST_PLUGINS_UGLY_DIR])
	GST_PLUGINS_UGLY_DIR="$GST_PLUGINS_UGLY_DIR/gst:$GST_PLUGINS_UGLY_DIR/sys:$GST_PLUGINS_UGLY_DIR/ext"
	AC_SUBST(GST_PLUGINS_UGLY_DIR)
	fi
	])

	dnl ===========================================================================
	dnl AG_GST_CHECK_GST_PLUGINS_BAD([GST-API_VERSION], [MIN-VERSION])
	dnl
	dnl Will set GST_PLUGINS_BAD_DIR for use in Makefile.am. Note that this will
	dnl only be set in an uninstalled setup, since -ugly ships no .pc file and in
	dnl an installed setup all plugins will be found in GST_PLUGINS_DIR anyway.
	dnl ===========================================================================
	AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_BAD],
	[
	AG_GST_CHECK_MODULES(GST_PLUGINS_BAD, gstreamer-plugins-bad-[$1], [$2],
	[GStreamer Bad Plugins], [no])

	if test "x$HAVE_GST_PLUGINS_BAD" = "xyes"; then
	dnl check for where bad plugins got installed
	dnl this is used for unit tests
	dnl allow setting before calling this macro to override
	if test -z $GST_PLUGINS_BAD_DIR; then
	GST_PLUGINS_BAD_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-bad-[$1]`
	if test -z $GST_PLUGINS_BAD_DIR; then
	AC_MSG_ERROR([no pluginsdir set in GStreamer Bad Plugins pkg-config file])
	fi
	fi
	AC_MSG_NOTICE([using GStreamer Bad Plugins in $GST_PLUGINS_BAD_DIR])
	GST_PLUGINS_BAD_DIR="$GST_PLUGINS_BAD_DIR/gst:$GST_PLUGINS_BAD_DIR/sys:$GST_PLUGINS_BAD_DIR/ext"
	AC_SUBST(GST_PLUGINS_BAD_DIR)
	fi
	])

	dnl ===========================================================================
	dnl AG_GST_CHECK_GST_PLUGINS_LIBAV([GST-API_VERSION], [MIN-VERSION])
	dnl
	dnl Will set GST_PLUGINS_LIBAV_DIR for use in Makefile.am. Note that this will
	dnl only be set in an uninstalled setup, since -libav ships no .pc file and in
	dnl an installed setup all plugins will be found in GST_PLUGINS_DIR anyway.
	dnl ===========================================================================
	AC_DEFUN([AG_GST_CHECK_GST_PLUGINS_LIBAV],
	[
	AG_GST_CHECK_MODULES(GST_PLUGINS_LIBAV, gstreamer-plugins-libav-[$1], [$2],
	[GStreamer Libav Plugins], [no])

	if test "x$HAVE_GST_PLUGINS_LIBAV" = "xyes"; then
	dnl check for where libav plugins got installed
	dnl this is used for unit tests
	dnl allow setting before calling this macro to override
	if test -z $GST_PLUGINS_LIBAV_DIR; then
	GST_PLUGINS_LIBAV_DIR=`$PKG_CONFIG --variable=pluginsdir gstreamer-plugins-libav-[$1]`
	if test -z $GST_PLUGINS_LIBAV_DIR; then
	AC_MSG_ERROR([no pluginsdir set in GStreamer Libav Plugins pkg-config file])
	fi
	fi
	GST_PLUGINS_LIBAV_DIR="$GST_PLUGINS_LIBAV_DIR/ext/libav"
	AC_MSG_NOTICE([using GStreamer Libav Plugins in $GST_PLUGINS_LIBAV_DIR])
	AC_SUBST(GST_PLUGINS_LIBAV_DIR)
	fi
	])