michael@0: dnl This Source Code Form is subject to the terms of the Mozilla Public
michael@0: dnl License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0: dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0: 
michael@0: # PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
michael@0: # defines GSTUFF_LIBS, GSTUFF_CFLAGS, see pkg-config man page
michael@0: # also defines GSTUFF_PKG_ERRORS on error
michael@0: AC_DEFUN([PKG_CHECK_MODULES],
michael@0: [succeeded=no
michael@0: 
michael@0:   if test -z "$PKG_CONFIG"; then
michael@0:     AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
michael@0:   fi
michael@0: 
michael@0:   if test "$PKG_CONFIG" = "no" ; then
michael@0:      echo "*** The pkg-config script could not be found. Make sure it is"
michael@0:      echo "*** in your path, or set the PKG_CONFIG environment variable"
michael@0:      echo "*** to the full path to pkg-config."
michael@0:      echo "*** Or see http://www.freedesktop.org/software/pkgconfig to get pkg-config."
michael@0:   else
michael@0:      PKG_CONFIG_MIN_VERSION=0.9.0
michael@0:      if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
michael@0:         AC_MSG_CHECKING(for $2)
michael@0: 
michael@0:         if $PKG_CONFIG --exists "$2" ; then
michael@0:             AC_MSG_RESULT(yes)
michael@0:             succeeded=yes
michael@0: 
michael@0:             AC_MSG_CHECKING($1_CFLAGS)
michael@0:             $1_CFLAGS=`$PKG_CONFIG --cflags "$2"`
michael@0:             AC_MSG_RESULT($$1_CFLAGS)
michael@0: 
michael@0:             AC_MSG_CHECKING($1_LIBS)
michael@0:             ## Remove evil flags like -Wl,--export-dynamic
michael@0:             $1_LIBS="`$PKG_CONFIG --libs \"$2\" |sed s/-Wl,--export-dynamic//g`"
michael@0:             AC_MSG_RESULT($$1_LIBS)
michael@0:         else
michael@0:             $1_CFLAGS=""
michael@0:             $1_LIBS=""
michael@0:             ## If we have a custom action on failure, don't print errors, but 
michael@0:             ## do set a variable so people can do so.
michael@0:             $1_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
michael@0:             ifelse([$4], ,echo $$1_PKG_ERRORS,)
michael@0:         fi
michael@0: 
michael@0:         AC_SUBST($1_CFLAGS)
michael@0:         AC_SUBST($1_LIBS)
michael@0:      else
michael@0:         echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
michael@0:         echo "*** See http://www.freedesktop.org/software/pkgconfig"
michael@0:      fi
michael@0:   fi
michael@0: 
michael@0:   if test $succeeded = yes; then
michael@0:      ifelse([$3], , :, [$3])
michael@0:   else
michael@0:      if test "$COMPILE_ENVIRONMENT"; then 
michael@0:        ifelse([$4], , AC_MSG_ERROR([Library requirements ($2) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.]), [$4])
michael@0:      fi
michael@0:   fi
michael@0: ])
michael@0: 
michael@0: