Chris@40: # extra_pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
Chris@40: #
Chris@40: # Copyright (c) 2008-2012 Erik de Castro Lopo <erikd@mega-nerd.com>
Chris@40: # Copyright (c) 2004 Scott James Remnant <scott@netsplit.com>.
Chris@40: #
Chris@40: # This program is free software; you can redistribute it and/or modify
Chris@40: # it under the terms of the GNU General Public License as published by
Chris@40: # the Free Software Foundation; either version 2 of the License, or
Chris@40: # (at your option) any later version.
Chris@40: #
Chris@40: # This program is distributed in the hope that it will be useful, but
Chris@40: # WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@40: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Chris@40: # General Public License for more details.
Chris@40: #
Chris@40: # You should have received a copy of the GNU General Public License
Chris@40: # along with this program; if not, write to the Free Software
Chris@40: # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Chris@40: #
Chris@40: # As a special exception to the GNU General Public License, if you
Chris@40: # distribute this file as part of a program that contains a
Chris@40: # configuration script generated by Autoconf, you may include it under
Chris@40: # the same distribution terms that you use for the rest of that program.
Chris@40: 
Chris@40: # --------------------------------------------------------------
Chris@40: # PKG_CHECK_MOD_VERSION(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
Chris@40: # [ACTION-IF-NOT-FOUND])
Chris@40: #
Chris@40: # This is a very slight modification to the macro PKG_CHECK_MODULES that
Chris@40: # is in the original pkg.m4 file. It prints the versions in the checking
Chris@40: # message (erikd@mega-nerd.com).
Chris@40: 
Chris@40: AC_DEFUN([PKG_CHECK_MOD_VERSION],
Chris@40: [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
Chris@40: AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
Chris@40: AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
Chris@40: 
Chris@40: pkg_failed=no
Chris@40: AC_MSG_CHECKING([for $2 ])
Chris@40: 
Chris@40: _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
Chris@40: _PKG_CONFIG([$1][_LIBS], [libs], [$2])
Chris@40: 
Chris@40: pkg_link_saved_CFLAGS=$CFLAGS
Chris@40: pkg_link_saved_LIBS=$LIBS
Chris@40: 
Chris@40: eval "pkg_CFLAGS=\${pkg_cv_[]$1[]_CFLAGS}"
Chris@40: eval "pkg_LIBS=\${pkg_cv_[]$1[]_LIBS}"
Chris@40: 
Chris@40: CFLAGS="$CFLAGS $pkg_CFLAGS"
Chris@40: LIBS="$LIBS $pkg_LIBS"
Chris@40: 
Chris@40: AC_TRY_LINK([], puts ("");, pkg_link=yes, pkg_link=no)
Chris@40: 
Chris@40: CFLAGS=$pkg_link_saved_CFLAGS
Chris@40: LIBS=$pkg_link_saved_LIBS
Chris@40: 
Chris@40: if test $pkg_link = no ; then
Chris@40: 	$as_echo_n "link failed ... "
Chris@40: 	pkg_failed=yes
Chris@40: 	fi
Chris@40: 
Chris@40: m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
Chris@40: and $1[]_LIBS to avoid the need to call pkg-config.
Chris@40: See the pkg-config man page for more details.])
Chris@40: 
Chris@40: if test $pkg_failed = yes; then
Chris@40:         _PKG_SHORT_ERRORS_SUPPORTED
Chris@40:         if test $_pkg_short_errors_supported = yes; then
Chris@40: 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
Chris@40:         else
Chris@40: 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
Chris@40:         fi
Chris@40: 	# Put the nasty error message in config.log where it belongs
Chris@40: 	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
Chris@40: 
Chris@40: 	ifelse([$4], , [AC_MSG_ERROR(dnl
Chris@40: [Package requirements ($2) were not met:
Chris@40: 
Chris@40: $$1_PKG_ERRORS
Chris@40: 
Chris@40: Consider adjusting the PKG_CONFIG_PATH environment variable if you
Chris@40: installed software in a non-standard prefix.
Chris@40: 
Chris@40: _PKG_TEXT
Chris@40: ])],
Chris@40: 		[AC_MSG_RESULT([no])
Chris@40:                 $4])
Chris@40: elif test $pkg_failed = untried; then
Chris@40: 	ifelse([$4], , [AC_MSG_FAILURE(dnl
Chris@40: [The pkg-config script could not be found or is too old.  Make sure it
Chris@40: is in your PATH or set the PKG_CONFIG environment variable to the full
Chris@40: path to pkg-config.
Chris@40: 
Chris@40: _PKG_TEXT
Chris@40: 
Chris@40: To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],
Chris@40: 		[$4])
Chris@40: else
Chris@40: 	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
Chris@40: 	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
Chris@40:         AC_MSG_RESULT([yes])
Chris@40: 	ifelse([$3], , :, [$3])
Chris@40: fi[]dnl
Chris@40: ])# PKG_CHECK_MOD_VERSION