cannam@85: # extra_pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
cannam@85: # 
cannam@85: # Copyright (c) 2004 Scott James Remnant <scott@netsplit.com>.
cannam@85: #
cannam@85: # This program is free software; you can redistribute it and/or modify
cannam@85: # it under the terms of the GNU General Public License as published by
cannam@85: # the Free Software Foundation; either version 2 of the License, or
cannam@85: # (at your option) any later version.
cannam@85: #
cannam@85: # This program is distributed in the hope that it will be useful, but
cannam@85: # WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@85: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
cannam@85: # General Public License for more details.
cannam@85: #
cannam@85: # You should have received a copy of the GNU General Public License
cannam@85: # along with this program; if not, write to the Free Software
cannam@85: # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
cannam@85: #
cannam@85: # As a special exception to the GNU General Public License, if you
cannam@85: # distribute this file as part of a program that contains a
cannam@85: # configuration script generated by Autoconf, you may include it under
cannam@85: # the same distribution terms that you use for the rest of that program.
cannam@85: 
cannam@85: # --------------------------------------------------------------
cannam@85: # PKG_CHECK_MOD_VERSION(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
cannam@85: # [ACTION-IF-NOT-FOUND])
cannam@85: #
cannam@85: # This is a very slight modification to the macro PKG_CHECK_MODULES that
cannam@85: # is in the original pkg.m4 file. It prints the versions in the checking
cannam@85: # message (erikd@mega-nerd.com).
cannam@85: 
cannam@85: AC_DEFUN([PKG_CHECK_MOD_VERSION],
cannam@85: [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
cannam@85: AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
cannam@85: AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
cannam@85: 
cannam@85: pkg_failed=no
cannam@85: AC_MSG_CHECKING([for $2 ])
cannam@85: 
cannam@85: _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
cannam@85: _PKG_CONFIG([$1][_LIBS], [libs], [$2])
cannam@85: 
cannam@85: m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
cannam@85: and $1[]_LIBS to avoid the need to call pkg-config.
cannam@85: See the pkg-config man page for more details.])
cannam@85: 
cannam@85: if test $pkg_failed = yes; then
cannam@85:         _PKG_SHORT_ERRORS_SUPPORTED
cannam@85:         if test $_pkg_short_errors_supported = yes; then
cannam@85: 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
cannam@85:         else 
cannam@85: 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
cannam@85:         fi
cannam@85: 	# Put the nasty error message in config.log where it belongs
cannam@85: 	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
cannam@85: 
cannam@85: 	ifelse([$4], , [AC_MSG_ERROR(dnl
cannam@85: [Package requirements ($2) were not met:
cannam@85: 
cannam@85: $$1_PKG_ERRORS
cannam@85: 
cannam@85: Consider adjusting the PKG_CONFIG_PATH environment variable if you
cannam@85: installed software in a non-standard prefix.
cannam@85: 
cannam@85: _PKG_TEXT
cannam@85: ])],
cannam@85: 		[AC_MSG_RESULT([no])
cannam@85:                 $4])
cannam@85: elif test $pkg_failed = untried; then
cannam@85: 	ifelse([$4], , [AC_MSG_FAILURE(dnl
cannam@85: [The pkg-config script could not be found or is too old.  Make sure it
cannam@85: is in your PATH or set the PKG_CONFIG environment variable to the full
cannam@85: path to pkg-config.
cannam@85: 
cannam@85: _PKG_TEXT
cannam@85: 
cannam@85: To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],
cannam@85: 		[$4])
cannam@85: else
cannam@85: 	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
cannam@85: 	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
cannam@85:         AC_MSG_RESULT([yes])
cannam@85: 	ifelse([$3], , :, [$3])
cannam@85: fi[]dnl
cannam@85: ])# PKG_CHECK_MOD_VERSION