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, see <http://www.gnu.org/licenses/>. 18# 19# As a special exception to the GNU General Public License, if you 20# distribute this file as part of a program that contains a 21# configuration script generated by Autoconf, you may include it under 22# the same distribution terms that you use for the rest of that program. 23 24# PKG_PROG_PKG_CONFIG([MIN-VERSION]) 25# ---------------------------------- 26AC_DEFUN([PKG_PROG_PKG_CONFIG], 27[m4_pattern_forbid([^_?PKG_[A-Z_]+$]) 28m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$]) 29m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$]) 30AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) 31AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) 32AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) 33 34if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then 35 AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) 36fi 37if test -n "$PKG_CONFIG"; then 38 _pkg_min_version=m4_default([$1], [0.9.0]) 39 AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) 40 if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then 41 AC_MSG_RESULT([yes]) 42 else 43 AC_MSG_RESULT([no]) 44 PKG_CONFIG="" 45 fi 46fi[]dnl 47])# PKG_PROG_PKG_CONFIG 48 49# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) 50# 51# Check to see whether a particular set of modules exists. Similar 52# to PKG_CHECK_MODULES(), but does not set variables or print errors. 53# 54# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 55# only at the first occurence in configure.ac, so if the first place 56# it's called might be skipped (such as if it is within an "if", you 57# have to call PKG_CHECK_EXISTS manually 58# -------------------------------------------------------------- 59AC_DEFUN([PKG_CHECK_EXISTS], 60[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 61if test -n "$PKG_CONFIG" && \ 62 AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then 63 m4_default([$2], [:]) 64m4_ifvaln([$3], [else 65 $3])dnl 66fi]) 67 68# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) 69# --------------------------------------------- 70m4_define([_PKG_CONFIG], 71[if test -n "$$1"; then 72 pkg_cv_[]$1="$$1" 73 elif test -n "$PKG_CONFIG"; then 74 PKG_CHECK_EXISTS([$3], 75 [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null` 76 test "x$?" != "x0" && pkg_failed=yes ], 77 [pkg_failed=yes]) 78 else 79 pkg_failed=untried 80fi[]dnl 81])# _PKG_CONFIG 82 83# _PKG_SHORT_ERRORS_SUPPORTED 84# ----------------------------- 85AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED], 86[AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 87if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then 88 _pkg_short_errors_supported=yes 89else 90 _pkg_short_errors_supported=no 91fi[]dnl 92])# _PKG_SHORT_ERRORS_SUPPORTED 93 94 95# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], 96# [ACTION-IF-NOT-FOUND]) 97# 98# 99# Note that if there is a possibility the first call to 100# PKG_CHECK_MODULES might not happen, you should be sure to include an 101# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac 102# 103# 104# -------------------------------------------------------------- 105AC_DEFUN([PKG_CHECK_MODULES], 106[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 107AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl 108AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl 109 110pkg_failed=no 111AC_MSG_CHECKING([for $1]) 112 113_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2]) 114_PKG_CONFIG([$1][_LIBS], [libs], [$2]) 115 116m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS 117and $1[]_LIBS to avoid the need to call pkg-config. 118See the pkg-config man page for more details.]) 119 120if test $pkg_failed = yes; then 121 AC_MSG_RESULT([no]) 122 _PKG_SHORT_ERRORS_SUPPORTED 123 if test $_pkg_short_errors_supported = yes; then 124 $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1` 125 else 126 $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1` 127 fi 128 # Put the nasty error message in config.log where it belongs 129 echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD 130 131 m4_default([$4], [AC_MSG_ERROR( 132[Package requirements ($2) were not met: 133 134$$1_PKG_ERRORS 135 136Consider adjusting the PKG_CONFIG_PATH environment variable if you 137installed software in a non-standard prefix. 138 139_PKG_TEXT])[]dnl 140 ]) 141elif test $pkg_failed = untried; then 142 AC_MSG_RESULT([no]) 143 m4_default([$4], [AC_MSG_FAILURE( 144[The pkg-config script could not be found or is too old. Make sure it 145is in your PATH or set the PKG_CONFIG environment variable to the full 146path to pkg-config. 147 148_PKG_TEXT 149 150To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl 151 ]) 152else 153 $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS 154 $1[]_LIBS=$pkg_cv_[]$1[]_LIBS 155 AC_MSG_RESULT([yes]) 156 $3 157fi[]dnl 158])# PKG_CHECK_MODULES 159 160 161# PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], 162# [ACTION-IF-NOT-FOUND]) 163# --------------------------------------------------------------------- 164# Checks for existence of MODULES and gathers its build flags with 165# static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags 166# and VARIABLE-PREFIX_LIBS from --libs. 167# 168# Note that if there is a possibility the first call to 169# PKG_CHECK_MODULES_STATIC might not happen, you should be sure to include 170# an explicit call to PKG_PROG_PKG_CONFIG in your configure.ac. 171AC_DEFUN([PKG_CHECK_MODULES_STATIC], 172[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 173_save_PKG_CONFIG=$PKG_CONFIG 174PKG_CONFIG="$PKG_CONFIG --static" 175PKG_CHECK_MODULES($@) 176PKG_CONFIG=$_save_PKG_CONFIG[]dnl 177]) 178 179 180# PKG_INSTALLDIR(DIRECTORY) 181# ------------------------- 182# Substitutes the variable pkgconfigdir as the location where a module 183# should install pkg-config .pc files. By default the directory is 184# $libdir/pkgconfig, but the default can be changed by passing 185# DIRECTORY. The user can override through the --with-pkgconfigdir 186# parameter. 187AC_DEFUN([PKG_INSTALLDIR], 188[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])]) 189m4_pushdef([pkg_description], 190 [pkg-config installation directory @<:@]pkg_default[@:>@]) 191AC_ARG_WITH([pkgconfigdir], 192 [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],, 193 [with_pkgconfigdir=]pkg_default) 194AC_SUBST([pkgconfigdir], [$with_pkgconfigdir]) 195m4_popdef([pkg_default]) 196m4_popdef([pkg_description]) 197]) dnl PKG_INSTALLDIR 198 199 200# PKG_NOARCH_INSTALLDIR(DIRECTORY) 201# ------------------------- 202# Substitutes the variable noarch_pkgconfigdir as the location where a 203# module should install arch-independent pkg-config .pc files. By 204# default the directory is $datadir/pkgconfig, but the default can be 205# changed by passing DIRECTORY. The user can override through the 206# --with-noarch-pkgconfigdir parameter. 207AC_DEFUN([PKG_NOARCH_INSTALLDIR], 208[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])]) 209m4_pushdef([pkg_description], 210 [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@]) 211AC_ARG_WITH([noarch-pkgconfigdir], 212 [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],, 213 [with_noarch_pkgconfigdir=]pkg_default) 214AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir]) 215m4_popdef([pkg_default]) 216m4_popdef([pkg_description]) 217]) dnl PKG_NOARCH_INSTALLDIR 218 219 220# PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE, 221# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) 222# ------------------------------------------- 223# Retrieves the value of the pkg-config variable for the given module. 224AC_DEFUN([PKG_CHECK_VAR], 225[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 226AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl 227 228_PKG_CONFIG([$1], [variable="][$3]["], [$2]) 229AS_VAR_COPY([$1], [pkg_cv_][$1]) 230 231AS_VAR_IF([$1], [""], [$5], [$4])dnl 232])# PKG_CHECK_VAR 233