1 # pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
3 # Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
4 # Copyright © 2008 Free Software Foundation, Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 # As a special exception to the GNU General Public License, if you
21 # distribute this file as part of a program that contains a
22 # configuration script generated by Autoconf, you may include it under
23 # the same distribution terms that you use for the rest of that program.
25 # PKG_PROG_PKG_CONFIG([MIN-VERSION])
26 # ----------------------------------
27 AC_DEFUN([PKG_PROG_PKG_CONFIG],
28 [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
29 m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
30 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
31 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
32 AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
34 if test -n "$PKG_CONFIG"; then
35 _pkg_min_version=m4_default([$1], [0.18])
36 AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
37 if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
45 ])# PKG_PROG_PKG_CONFIG
47 # PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
49 # Check to see whether a particular set of modules exists. Similar
50 # to PKG_CHECK_MODULES(), but does not set variables or print errors.
53 # Similar to PKG_CHECK_MODULES, make sure that the first instance of
54 # this or PKG_CHECK_MODULES is called, or make sure to call
55 # PKG_CHECK_EXISTS manually
56 # --------------------------------------------------------------
57 AC_DEFUN([PKG_CHECK_EXISTS],
58 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
59 if test -n "$PKG_CONFIG" && \
60 AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
61 m4_ifval([$2], [$2], [:])
67 # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
68 # ---------------------------------------------
69 m4_define([_PKG_CONFIG],
70 [if test -n "$PKG_CONFIG"; then
71 if test -n "$$1"; then
74 PKG_CHECK_EXISTS([$3],
75 [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
83 # _PKG_SHORT_ERRORS_SUPPORTED
84 # -----------------------------
85 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
86 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
87 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
88 _pkg_short_errors_supported=yes
90 _pkg_short_errors_supported=no
92 ])# _PKG_SHORT_ERRORS_SUPPORTED
95 # PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
96 # [ACTION-IF-NOT-FOUND])
99 # PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
105 # GSTUFF_CPPFLAGS # the -I, -D and -U's out of CFLAGS
107 # see pkg-config man page also defines GSTUFF_PKG_ERRORS on error
109 # Note that if there is a possibility the first call to
110 # PKG_CHECK_MODULES might not happen, you should be sure to include an
111 # explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
113 # --------------------------------------------------------------
114 AC_DEFUN([PKG_CHECK_MODULES],
115 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
116 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
117 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
118 AC_ARG_VAR([$1][_INCLUDEDIR], [includedir for $1, overriding pkg-config])dnl
121 AC_MSG_CHECKING([for $1])
123 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
125 if test x$cross_compiling = xyes
127 _PKG_CONFIG([$1][_LIBS], [libs-only-l --static], [$2])
129 _PKG_CONFIG([$1][_LIBS], [libs --static], [$2])
132 _PKG_CONFIG([$1][_INCLUDEDIR], [variable=includedir], [$2])
135 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
136 and $1[]_LIBS to avoid the need to call pkg-config.
137 See the pkg-config man page for more details.])
139 if test $pkg_failed = yes; then
140 _PKG_SHORT_ERRORS_SUPPORTED
141 if test $_pkg_short_errors_supported = yes; then
142 $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
144 $1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
146 # Put the nasty error message in config.log where it belongs
147 echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
149 ifelse([$4], , [AC_MSG_ERROR(dnl
150 [Package requirements ($2) were not met:
154 Consider adjusting the PKG_CONFIG_PATH environment variable if you
155 installed software in a non-standard prefix.
161 elif test $pkg_failed = untried; then
162 ifelse([$4], , [AC_MSG_FAILURE(dnl
163 [The pkg-config script could not be found or is too old. Make sure it
164 is in your PATH or set the PKG_CONFIG environment variable to the full
169 To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],
172 $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
173 $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
174 $1[]_INCLUDEDIR=$pkg_cv_[]$1[]_INCLUDEDIR
177 for flag in $$1[]_CFLAGS; do
179 -I* | -D* | -U*) $1[]_CPPFLAGS="$$1[]_CPPFLAGS $flag" ;;
182 pkg_cv_[]$1[]_CPPFLAGS=$$1[]_CPPFLAGS
183 AC_SUBST($1[]_CPPFLAGS)
186 ifelse([$3], , :, [$3])
188 ])# PKG_CHECK_MODULES