melunko@709: # pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
melunko@709: # 
melunko@709: # Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
melunko@709: #
melunko@709: # This program is free software; you can redistribute it and/or modify
melunko@709: # it under the terms of the GNU General Public License as published by
melunko@709: # the Free Software Foundation; either version 2 of the License, or
melunko@709: # (at your option) any later version.
melunko@709: #
melunko@709: # This program is distributed in the hope that it will be useful, but
melunko@709: # WITHOUT ANY WARRANTY; without even the implied warranty of
melunko@709: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
melunko@709: # General Public License for more details.
melunko@709: #
melunko@709: # You should have received a copy of the GNU General Public License
melunko@709: # along with this program; if not, write to the Free Software
melunko@709: # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
melunko@709: #
melunko@709: # As a special exception to the GNU General Public License, if you
melunko@709: # distribute this file as part of a program that contains a
melunko@709: # configuration script generated by Autoconf, you may include it under
melunko@709: # the same distribution terms that you use for the rest of that program.
melunko@709: 
melunko@709: # PKG_PROG_PKG_CONFIG([MIN-VERSION])
melunko@709: # ----------------------------------
melunko@709: AC_DEFUN([PKG_PROG_PKG_CONFIG],
melunko@709: [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
melunko@709: m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
melunko@709: AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
melunko@709: if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
melunko@709: 	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
melunko@709: fi
melunko@709: if test -n "$PKG_CONFIG"; then
melunko@709: 	_pkg_min_version=m4_ifval([$1], [$1], [0.9.0])
melunko@709: 	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
melunko@709: 	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
melunko@709: 		AC_MSG_RESULT([yes])
melunko@709: 	else
melunko@709: 		AC_MSG_RESULT([no])
melunko@709: 		PKG_CONFIG=""
melunko@709: 	fi
melunko@709: 		
melunko@709: fi[]dnl
melunko@709: ])# PKG_PROG_PKG_CONFIG
melunko@709: 
melunko@709: # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
melunko@709: # ---------------------------------------------
melunko@709: m4_define([_PKG_CONFIG],
melunko@709: [if test "x$ac_cv_env_[]$1[]_set" = "xset"; then
melunko@709: 	pkg_cv_[]$1=$ac_cv_env_[]$1[]_value
melunko@709: elif test -n "$PKG_CONFIG"; then
melunko@709: 	if AC_RUN_LOG([$PKG_CONFIG --exists "$3" >/dev/null 2>&1]); then
melunko@709: 		pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
melunko@709: 	else
melunko@709: 		pkg_failed=yes
melunko@709: 	fi
melunko@709: else
melunko@709: 	pkg_failed=untried
melunko@709: fi[]dnl
melunko@709: ])# _PKG_CONFIG
melunko@709: 
melunko@709: # PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
melunko@709: # [ACTION-IF-NOT-FOUND])
melunko@709: #
melunko@709: #
melunko@709: # Note that if there is a possibility the first call to
melunko@709: # PKG_CHECK_MODULES might not happen, you should be sure to include an
melunko@709: # explicit call to PKG_PROG_PKG_CONFIG in your configure.in
melunko@709: #
melunko@709: #
melunko@709: # --------------------------------------------------------------
melunko@709: AC_DEFUN([PKG_CHECK_MODULES],
melunko@709: [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
melunko@709: AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
melunko@709: AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
melunko@709: 
melunko@709: pkg_failed=no
melunko@709: AC_CACHE_CHECK([for $1][_CFLAGS], [pkg_cv_][$1][_CFLAGS],
melunko@709: 	[_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])])
melunko@709: AC_CACHE_CHECK([for $1][_LIBS], [pkg_cv_][$1][_LIBS],
melunko@709: 	[_PKG_CONFIG([$1][_LIBS], [libs], [$2])])
melunko@709: 
melunko@709: if test $pkg_failed = yes; then
melunko@709: 	$1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
melunko@709: 	# Put the nasty error message in config.log where it belongs
melunko@709: 	echo "$$1[]_PKG_ERRORS" 1>&AS_MESSAGE_LOG_FD
melunko@709: 
melunko@709: 	ifelse([$4], , [AC_MSG_ERROR(dnl
melunko@709: [Package requirements ($2) were not met.
melunko@709: Consider adjusting the PKG_CONFIG_PATH environment variable if you
melunko@709: installed software in a non-standard prefix.
melunko@709: 
melunko@709: Alternatively you may set the $1_CFLAGS and $1_LIBS environment variables
melunko@709: to avoid the need to call pkg-config.  See the pkg-config man page for
melunko@709: more details.])],
melunko@709: 		[$4])
melunko@709: elif test $pkg_failed = untried; then
melunko@709: 	ifelse([$4], , [AC_MSG_FAILURE(dnl
melunko@709: [The pkg-config script could not be found or is too old.  Make sure it
melunko@709: is in your PATH or set the PKG_CONFIG environment variable to the full
melunko@709: path to pkg-config.
melunko@709: 
melunko@709: Alternatively you may set the $1_CFLAGS and $1_LIBS environment variables
melunko@709: to avoid the need to call pkg-config.  See the pkg-config man page for
melunko@709: more details.
melunko@709: 
melunko@709: To get pkg-config, see <http://www.freedesktop.org/software/pkgconfig>.])],
melunko@709: 		[$4])
melunko@709: else
melunko@709: 	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
melunko@709: 	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
melunko@709: 	ifelse([$3], , :, [$3])
melunko@709: fi[]dnl
melunko@709: ])# PKG_CHECK_MODULES