2 # This file is part of the aMule Project.
4 # Copyright (c) 2003-2008 aMule Team ( admin@amule.org / http://www.amule.org )
6 # Any parts of this program derived from the xMule, lMule or eMule project,
7 # or contributed by third-party developers are copyrighted by their
10 # This program is free software; you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation; either version 2 of the License, or
13 # (at your option) any later version.
15 # This program is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
20 # You should have received a copy of the GNU General Public License
21 # along with this program; if not, write to the Free Software
22 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 dnl ---------------------------------------------------------------------------
26 dnl MULE_CHECK_LIBPNG([VERSION = 1.2.0], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
28 dnl adds support for --with-libpng-prefix and --with-libpng-config
29 dnl command line options
31 dnl Test for libpng, and define LIBPNG_CFLAGS, LIBPNG_LIBS and LIBPNG_CONFIG_NAME
32 dnl environment variable to override the default name of the libpng-config script
33 dnl to use. Set LIBPNG_CONFIG_PATH to specify the full path to libpng-config -
34 dnl in this case the macro won't even waste time on tests for its existence.
35 dnl ---------------------------------------------------------------------------
36 AC_DEFUN([MULE_CHECK_LIBPNG],
38 m4_define([REQUIRED_VERSION], [m4_ifval([$1], [$1], [1.2.0])])dnl
39 m4_define([REQUIRED_VERSION_MAJOR], [m4_bregexp(REQUIRED_VERSION, [\([0-9]+\)\.\([0-9]+\)\.\([0-9]+\)], [\1])])dnl
40 m4_define([REQUIRED_VERSION_MINOR], [m4_bregexp(REQUIRED_VERSION, [\([0-9]+\)\.\([0-9]+\)\.\([0-9]+\)], [\2])])dnl
41 m4_define([REQUIRED_VERSION_MICRO], [m4_bregexp(REQUIRED_VERSION, [\([0-9]+\)\.\([0-9]+\)\.\([0-9]+\)], [\3])])dnl
43 AC_ARG_WITH([libpng-prefix], [AS_HELP_STRING([--with-libpng-prefix=PREFIX], [prefix where libpng is installed (optional)])])
44 AC_ARG_WITH([libpng-config], [AS_HELP_STRING([--with-libpng-config=CONFIG], [libpng-config script to use (optional)])])
48 # do we have libpng-config name: it can be libpng-config or libpng12-config or ...
49 AS_IF([test x${LIBPNG_CONFIG_NAME+set} != xset], [LIBPNG_CONFIG_NAME=libpng-config])
50 AS_IF([test -n "$with_libpng_config"], [LIBPNG_CONFIG_NAME="$with_libpng_config"])
52 # deal with optional prefix
53 AS_IF([test -n "$with_libpng_prefix"], [LIBPNG_LOOKUP_PATH="$with_libpng_prefix/bin"])
55 # don't search the PATH if LIBPNG_CONFIG_NAME is absolute filename
56 AS_IF([test -x "$LIBPNG_CONFIG_NAME"], [
57 AC_MSG_CHECKING([for libpng-config])
58 LIBPNG_CONFIG_PATH="$LIBPNG_CONFIG_NAME"
59 AC_MSG_RESULT($LIBPNG_CONFIG_PATH)
60 ], [AC_PATH_PROG([LIBPNG_CONFIG_PATH], [$LIBPNG_CONFIG_NAME], [no], [$LIBPNG_LOOKUP_PATH:$PATH])])
62 AS_IF([test ${LIBPNG_CONFIG_PATH:-no} != no],
64 AC_MSG_CHECKING([for libpng version >= REQUIRED_VERSION])
66 LIBPNG_CONFIG_WITH_ARGS="$LIBPNG_CONFIG_PATH $libpng_config_args"
68 LIBPNG_VERSION=`$LIBPNG_CONFIG_WITH_ARGS --version`
69 libpng_config_major_version=`echo $LIBPNG_VERSION | sed ['s/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1/']`
70 libpng_config_minor_version=`echo $LIBPNG_VERSION | sed ['s/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\2/']`
71 libpng_config_micro_version=`echo $LIBPNG_VERSION | sed ['s/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\3/']`
74 MULE_IF([test $libpng_config_major_version -gt REQUIRED_VERSION_MAJOR], [libpng_ver_ok=yes],
75 [test $libpng_config_major_version -eq REQUIRED_VERSION_MAJOR], [
76 MULE_IF([test $libpng_config_minor_version -gt REQUIRED_VERSION_MINOR], [libpng_ver_ok=yes],
77 [test $libpng_config_minor_version -eq REQUIRED_VERSION_MINOR],
78 [MULE_IF([test $libpng_config_micro_version -ge REQUIRED_VERSION_MICRO], [libpng_ver_ok=yes])])
81 AS_IF([test -z "$libpng_ver_ok"], [
82 AS_IF([test -z "$LIBPNG_VERSION"], [AC_MSG_RESULT([no])], [
83 AC_MSG_RESULT([no (version $LIBPNG_VERSION is not new enough)])
87 LIBPNG_LIBS=`$LIBPNG_CONFIG_WITH_ARGS --libs`
88 LIBPNG_LDFLAGS=`$LIBPNG_CONFIG_WITH_ARGS --ldflags | sed -e "s/ *${LIBPNG_LIBS}$//"`
89 LIBPNG_CFLAGS=`$LIBPNG_CONFIG_WITH_ARGS --cflags`
90 AC_MSG_RESULT([yes (version $LIBPNG_VERSION)])
94 AS_IF([test -n "$LIBPNG_VERSION"], [$2], [$3])
96 AC_SUBST([LIBPNG_CFLAGS])dnl
97 AC_SUBST([LIBPNG_LDFLAGS])dnl
98 AC_SUBST([LIBPNG_LIBS])dnl
100 m4_undefine([REQUIRED_VERSION])dnl
101 m4_undefine([REQUIRED_VERSION_MAJOR])dnl
102 m4_undefine([REQUIRED_VERSION_MINOR])dnl
103 m4_undefine([REQUIRED_VERSION_MICRO])dnl