1# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*- 2# serial 1 (pkg-config-0.24) 3# 4# Copyright © 2004 Scott James Remnant <scott@netsplit.com>. 5# 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. 10# 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. 15# 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. 19# 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. 24 25# PKG_PROG_PKG_CONFIG([MIN-VERSION]) 26# ---------------------------------- 27AC_DEFUN([PKG_PROG_PKG_CONFIG], 28[m4_pattern_forbid([^_?PKG_[A-Z_]+$]) 29m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$]) 30m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$]) 31AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) 32AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) 33AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) 34 35if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then 36 AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) 37fi 38if test -n "$PKG_CONFIG"; then 39 _pkg_min_version=m4_default([$1], [0.9.0]) 40 AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) 41 if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then 42 AC_MSG_RESULT([yes]) 43 else 44 AC_MSG_RESULT([no]) 45 PKG_CONFIG="" 46 fi 47fi[]dnl 48])# PKG_PROG_PKG_CONFIG 49 50# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) 51# 52# Check to see whether a particular set of modules exists. Similar 53# to PKG_CHECK_MODULES(), but does not set variables or print errors. 54# 55# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 56# only at the first occurrence in configure.ac, so if the first place 57# it's called might be skipped (such as if it is within an "if", you 58# have to call PKG_CHECK_EXISTS manually 59# -------------------------------------------------------------- 60AC_DEFUN([PKG_CHECK_EXISTS], 61[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 62if test -n "$PKG_CONFIG" && \ 63 AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then 64 m4_default([$2], [:]) 65m4_ifvaln([$3], [else 66 $3])dnl 67fi]) 68 69# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) 70# --------------------------------------------- 71m4_define([_PKG_CONFIG], 72[if test -n "$$1"; then 73 pkg_cv_[]$1="$$1" 74 elif test -n "$PKG_CONFIG"; then 75 PKG_CHECK_EXISTS([$3], 76 [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null` 77 test "x$?" != "x0" && pkg_failed=yes ], 78 [pkg_failed=yes]) 79 else 80 pkg_failed=untried 81fi[]dnl 82])# _PKG_CONFIG 83 84# _PKG_SHORT_ERRORS_SUPPORTED 85# ----------------------------- 86AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED], 87[AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 88if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then 89 _pkg_short_errors_supported=yes 90else 91 _pkg_short_errors_supported=no 92fi[]dnl 93])# _PKG_SHORT_ERRORS_SUPPORTED 94 95 96# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], 97# [ACTION-IF-NOT-FOUND]) 98# 99# 100# Note that if there is a possibility the first call to 101# PKG_CHECK_MODULES might not happen, you should be sure to include an 102# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac 103# 104# 105# -------------------------------------------------------------- 106AC_DEFUN([PKG_CHECK_MODULES], 107[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 108AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl 109AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl 110 111pkg_failed=no 112AC_MSG_CHECKING([for $1]) 113 114_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2]) 115_PKG_CONFIG([$1][_LIBS], [libs], [$2]) 116 117m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS 118and $1[]_LIBS to avoid the need to call pkg-config. 119See the pkg-config man page for more details.]) 120 121if test $pkg_failed = yes; then 122 AC_MSG_RESULT([no]) 123 _PKG_SHORT_ERRORS_SUPPORTED 124 if test $_pkg_short_errors_supported = yes; then 125 $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1` 126 else 127 $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1` 128 fi 129 # Put the nasty error message in config.log where it belongs 130 echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD 131 132 m4_default([$4], [AC_MSG_ERROR( 133[Package requirements ($2) were not met: 134 135$$1_PKG_ERRORS 136 137Consider adjusting the PKG_CONFIG_PATH environment variable if you 138installed software in a non-standard prefix. 139 140_PKG_TEXT])[]dnl 141 ]) 142elif test $pkg_failed = untried; then 143 AC_MSG_RESULT([no]) 144 m4_default([$4], [AC_MSG_FAILURE( 145[The pkg-config script could not be found or is too old. Make sure it 146is in your PATH or set the PKG_CONFIG environment variable to the full 147path to pkg-config. 148 149_PKG_TEXT 150 151To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl 152 ]) 153else 154 $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS 155 $1[]_LIBS=$pkg_cv_[]$1[]_LIBS 156 AC_MSG_RESULT([yes]) 157 $3 158fi[]dnl 159])# PKG_CHECK_MODULES 160 161 162# PKG_INSTALLDIR(DIRECTORY) 163# ------------------------- 164# Substitutes the variable pkgconfigdir as the location where a module 165# should install pkg-config .pc files. By default the directory is 166# $libdir/pkgconfig, but the default can be changed by passing 167# DIRECTORY. The user can override through the --with-pkgconfigdir 168# parameter. 169AC_DEFUN([PKG_INSTALLDIR], 170[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])]) 171m4_pushdef([pkg_description], 172 [pkg-config installation directory @<:@]pkg_default[@:>@]) 173AC_ARG_WITH([pkgconfigdir], 174 [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],, 175 [with_pkgconfigdir=]pkg_default) 176AC_SUBST([pkgconfigdir], [$with_pkgconfigdir]) 177m4_popdef([pkg_default]) 178m4_popdef([pkg_description]) 179]) dnl PKG_INSTALLDIR 180 181 182# PKG_NOARCH_INSTALLDIR(DIRECTORY) 183# ------------------------- 184# Substitutes the variable noarch_pkgconfigdir as the location where a 185# module should install arch-independent pkg-config .pc files. By 186# default the directory is $datadir/pkgconfig, but the default can be 187# changed by passing DIRECTORY. The user can override through the 188# --with-noarch-pkgconfigdir parameter. 189AC_DEFUN([PKG_NOARCH_INSTALLDIR], 190[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])]) 191m4_pushdef([pkg_description], 192 [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@]) 193AC_ARG_WITH([noarch-pkgconfigdir], 194 [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],, 195 [with_noarch_pkgconfigdir=]pkg_default) 196AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir]) 197m4_popdef([pkg_default]) 198m4_popdef([pkg_description]) 199]) dnl PKG_NOARCH_INSTALLDIR 200