melunko@917: # pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*- melunko@917: # melunko@917: # Copyright © 2004 Scott James Remnant . melunko@917: # melunko@917: # This program is free software; you can redistribute it and/or modify melunko@917: # it under the terms of the GNU General Public License as published by melunko@917: # the Free Software Foundation; either version 2 of the License, or melunko@917: # (at your option) any later version. melunko@917: # melunko@917: # This program is distributed in the hope that it will be useful, but melunko@917: # WITHOUT ANY WARRANTY; without even the implied warranty of melunko@917: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU melunko@917: # General Public License for more details. melunko@917: # melunko@917: # You should have received a copy of the GNU General Public License melunko@917: # along with this program; if not, write to the Free Software melunko@917: # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. melunko@917: # melunko@917: # As a special exception to the GNU General Public License, if you melunko@917: # distribute this file as part of a program that contains a melunko@917: # configuration script generated by Autoconf, you may include it under melunko@917: # the same distribution terms that you use for the rest of that program. melunko@917: melunko@917: # PKG_PROG_PKG_CONFIG([MIN-VERSION]) melunko@917: # ---------------------------------- melunko@917: AC_DEFUN([PKG_PROG_PKG_CONFIG], melunko@917: [m4_pattern_forbid([^_?PKG_[A-Z_]+$]) melunko@917: m4_pattern_allow([^PKG_CONFIG(_PATH)?$]) melunko@917: AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl melunko@917: if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then melunko@917: AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) melunko@917: fi melunko@917: if test -n "$PKG_CONFIG"; then melunko@917: _pkg_min_version=m4_ifval([$1], [$1], [0.9.0]) melunko@917: AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) melunko@917: if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then melunko@917: AC_MSG_RESULT([yes]) melunko@917: else melunko@917: AC_MSG_RESULT([no]) melunko@917: PKG_CONFIG="" melunko@917: fi melunko@917: melunko@917: fi[]dnl melunko@917: ])# PKG_PROG_PKG_CONFIG melunko@917: melunko@917: # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) melunko@917: # --------------------------------------------- melunko@917: m4_define([_PKG_CONFIG], melunko@917: [if test "x$ac_cv_env_[]$1[]_set" = "xset"; then melunko@917: pkg_cv_[]$1=$ac_cv_env_[]$1[]_value melunko@917: elif test -n "$PKG_CONFIG"; then melunko@917: if AC_RUN_LOG([$PKG_CONFIG --exists "$3" >/dev/null 2>&1]); then melunko@917: pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null` melunko@917: else melunko@917: pkg_failed=yes melunko@917: fi melunko@917: else melunko@917: pkg_failed=untried melunko@917: fi[]dnl melunko@917: ])# _PKG_CONFIG melunko@917: melunko@917: # PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], melunko@917: # [ACTION-IF-NOT-FOUND]) melunko@917: # melunko@917: # melunko@917: # Note that if there is a possibility the first call to melunko@917: # PKG_CHECK_MODULES might not happen, you should be sure to include an melunko@917: # explicit call to PKG_PROG_PKG_CONFIG in your configure.in melunko@917: # melunko@917: # melunko@917: # -------------------------------------------------------------- melunko@917: AC_DEFUN([PKG_CHECK_MODULES], melunko@917: [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl melunko@917: AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl melunko@917: AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl melunko@917: melunko@917: pkg_failed=no melunko@917: AC_CACHE_CHECK([for $1][_CFLAGS], [pkg_cv_][$1][_CFLAGS], melunko@917: [_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])]) melunko@917: AC_CACHE_CHECK([for $1][_LIBS], [pkg_cv_][$1][_LIBS], melunko@917: [_PKG_CONFIG([$1][_LIBS], [libs], [$2])]) melunko@917: melunko@917: if test $pkg_failed = yes; then melunko@917: $1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"` melunko@917: # Put the nasty error message in config.log where it belongs melunko@917: echo "$$1[]_PKG_ERRORS" 1>&AS_MESSAGE_LOG_FD melunko@917: melunko@917: ifelse([$4], , [AC_MSG_ERROR(dnl melunko@917: [Package requirements ($2) were not met. melunko@917: Consider adjusting the PKG_CONFIG_PATH environment variable if you melunko@917: installed software in a non-standard prefix. melunko@917: melunko@917: Alternatively you may set the $1_CFLAGS and $1_LIBS environment variables melunko@917: to avoid the need to call pkg-config. See the pkg-config man page for melunko@917: more details.])], melunko@917: [$4]) melunko@917: elif test $pkg_failed = untried; then melunko@917: ifelse([$4], , [AC_MSG_FAILURE(dnl melunko@917: [The pkg-config script could not be found or is too old. Make sure it melunko@917: is in your PATH or set the PKG_CONFIG environment variable to the full melunko@917: path to pkg-config. melunko@917: melunko@917: Alternatively you may set the $1_CFLAGS and $1_LIBS environment variables melunko@917: to avoid the need to call pkg-config. See the pkg-config man page for melunko@917: more details. melunko@917: melunko@917: To get pkg-config, see .])], melunko@917: [$4]) melunko@917: else melunko@917: $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS melunko@917: $1[]_LIBS=$pkg_cv_[]$1[]_LIBS melunko@917: ifelse([$3], , :, [$3]) melunko@917: fi[]dnl melunko@917: ])# PKG_CHECK_MODULES