1# generated automatically by aclocal 1.11.1 -*- Autoconf -*-
2
3# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4# 2005, 2006, 2007, 2008, 2009  Free Software Foundation, Inc.
5# This file is free software; the Free Software Foundation
6# gives unlimited permission to copy and/or distribute it,
7# with or without modifications, as long as this notice is preserved.
8
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
11# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
12# PARTICULAR PURPOSE.
13
14# pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
15# serial 1 (pkg-config-0.24)
16#
17# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
18#
19# This program is free software; you can redistribute it and/or modify
20# it under the terms of the GNU General Public License as published by
21# the Free Software Foundation; either version 2 of the License, or
22# (at your option) any later version.
23#
24# This program is distributed in the hope that it will be useful, but
25# WITHOUT ANY WARRANTY; without even the implied warranty of
26# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
27# General Public License for more details.
28#
29# You should have received a copy of the GNU General Public License
30# along with this program; if not, write to the Free Software
31# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
32#
33# As a special exception to the GNU General Public License, if you
34# distribute this file as part of a program that contains a
35# configuration script generated by Autoconf, you may include it under
36# the same distribution terms that you use for the rest of that program.
37
38# PKG_PROG_PKG_CONFIG([MIN-VERSION])
39# ----------------------------------
40AC_DEFUN([PKG_PROG_PKG_CONFIG],
41[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
42m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
43m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
44AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
45AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
46AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
47
48if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
49	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
50fi
51if test -n "$PKG_CONFIG"; then
52	_pkg_min_version=m4_default([$1], [0.9.0])
53	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
54	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
55		AC_MSG_RESULT([yes])
56	else
57		AC_MSG_RESULT([no])
58		PKG_CONFIG=""
59	fi
60fi[]dnl
61])# PKG_PROG_PKG_CONFIG
62
63# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
64#
65# Check to see whether a particular set of modules exists.  Similar
66# to PKG_CHECK_MODULES(), but does not set variables or print errors.
67#
68# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
69# only at the first occurence in configure.ac, so if the first place
70# it's called might be skipped (such as if it is within an "if", you
71# have to call PKG_CHECK_EXISTS manually
72# --------------------------------------------------------------
73AC_DEFUN([PKG_CHECK_EXISTS],
74[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
75if test -n "$PKG_CONFIG" && \
76    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
77  m4_default([$2], [:])
78m4_ifvaln([$3], [else
79  $3])dnl
80fi])
81
82# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
83# ---------------------------------------------
84m4_define([_PKG_CONFIG],
85[if test -n "$$1"; then
86    pkg_cv_[]$1="$$1"
87 elif test -n "$PKG_CONFIG"; then
88    PKG_CHECK_EXISTS([$3],
89                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
90		      test "x$?" != "x0" && pkg_failed=yes ],
91		     [pkg_failed=yes])
92 else
93    pkg_failed=untried
94fi[]dnl
95])# _PKG_CONFIG
96
97# _PKG_SHORT_ERRORS_SUPPORTED
98# -----------------------------
99AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
100[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
101if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
102        _pkg_short_errors_supported=yes
103else
104        _pkg_short_errors_supported=no
105fi[]dnl
106])# _PKG_SHORT_ERRORS_SUPPORTED
107
108
109# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
110# [ACTION-IF-NOT-FOUND])
111#
112#
113# Note that if there is a possibility the first call to
114# PKG_CHECK_MODULES might not happen, you should be sure to include an
115# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
116#
117#
118# --------------------------------------------------------------
119AC_DEFUN([PKG_CHECK_MODULES],
120[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
121AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
122AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
123
124pkg_failed=no
125AC_MSG_CHECKING([for $1])
126
127_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
128_PKG_CONFIG([$1][_LIBS], [libs], [$2])
129
130m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
131and $1[]_LIBS to avoid the need to call pkg-config.
132See the pkg-config man page for more details.])
133
134if test $pkg_failed = yes; then
135   	AC_MSG_RESULT([no])
136        _PKG_SHORT_ERRORS_SUPPORTED
137        if test $_pkg_short_errors_supported = yes; then
138	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
139        else
140	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
141        fi
142	# Put the nasty error message in config.log where it belongs
143	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
144
145	m4_default([$4], [AC_MSG_ERROR(
146[Package requirements ($2) were not met:
147
148$$1_PKG_ERRORS
149
150Consider adjusting the PKG_CONFIG_PATH environment variable if you
151installed software in a non-standard prefix.
152
153_PKG_TEXT])[]dnl
154        ])
155elif test $pkg_failed = untried; then
156     	AC_MSG_RESULT([no])
157	m4_default([$4], [AC_MSG_FAILURE(
158[The pkg-config script could not be found or is too old.  Make sure it
159is in your PATH or set the PKG_CONFIG environment variable to the full
160path to pkg-config.
161
162_PKG_TEXT
163
164To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
165        ])
166else
167	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
168	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
169        AC_MSG_RESULT([yes])
170	$3
171fi[]dnl
172])# PKG_CHECK_MODULES
173
174