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 (a] 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 # ---------------------------------- 27 AC_DEFUN([PKG_PROG_PKG_CONFIG], 28 [m4_pattern_forbid([^_?PKG_[A-Z_]+$]) 29 m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$]) 30 m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$]) 31 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) 32 AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) 33 AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) 34 35 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then 36 AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) 37 fi 38 if 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 $_pkg_min_version; then 42 AC_MSG_RESULT([yes]) 43 else 44 AC_MSG_RESULT([no]) 45 PKG_CONFIG="" 46 fi 47 fi[]dnl 48 ])# PKG_PROG_PKG_CONFIG 49 50 # PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) 51 # 52 # Check to see whether a particular set of modules exists. Similar 53 # to PKG_CHECK_MODULES(), but does not set variables or print errors. 54 # 55 # Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 56 # only at the first occurence in configure.ac, so if the first place 57 # it's called might be skipped (such as if it is within an "if", you 58 # have to call PKG_CHECK_EXISTS manually 59 # -------------------------------------------------------------- 60 AC_DEFUN([PKG_CHECK_EXISTS], 61 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 62 if test -n "$PKG_CONFIG" && \ 63 AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then 64 m4_default([$2], [:]) 65 m4_ifvaln([$3], [else 66 $3])dnl 67 fi]) 68 69 # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) 70 # --------------------------------------------- 71 m4_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 81 fi[]dnl 82 ])# _PKG_CONFIG 83 84 # _PKG_SHORT_ERRORS_SUPPORTED 85 # ----------------------------- 86 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED], 87 [AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 88 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then 89 _pkg_short_errors_supported=yes 90 else 91 _pkg_short_errors_supported=no 92 fi[]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 # -------------------------------------------------------------- 106 AC_DEFUN([PKG_CHECK_MODULES], 107 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 108 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl 109 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl 110 111 pkg_failed=no 112 AC_MSG_CHECKING([for $1]) 113 114 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2]) 115 _PKG_CONFIG([$1][_LIBS], [libs], [$2]) 116 117 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS 118 and $1[]_LIBS to avoid the need to call pkg-config. 119 See the pkg-config man page for more details.]) 120 121 if 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 136 137 Consider adjusting the PKG_CONFIG_PATH environment variable if you 138 installed software in a non-standard prefix. 139 140 _PKG_TEXT])[]dnl 141 ]) 142 elif 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 146 is in your PATH or set the PKG_CONFIG environment variable to the full 147 path to pkg-config. 148 149 _PKG_TEXT 150 151 To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl 152 ]) 153 else 154 $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS 155 $1[]_LIBS=$pkg_cv_[]$1[]_LIBS 156 AC_MSG_RESULT([yes]) 157 $3 158 fi[]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. 169 AC_DEFUN([PKG_INSTALLDIR], 170 [m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])]) 171 m4_pushdef([pkg_description], 172 [pkg-config installation directory @<:@]pkg_default[@:>@]) 173 AC_ARG_WITH([pkgconfigdir], 174 [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],, 175 [with_pkgconfigdir=]pkg_default) 176 AC_SUBST([pkgconfigdir], [$with_pkgconfigdir]) 177 m4_popdef([pkg_default]) 178 m4_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. 189 AC_DEFUN([PKG_NOARCH_INSTALLDIR], 190 [m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])]) 191 m4_pushdef([pkg_description], 192 [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@]) 193 AC_ARG_WITH([noarch-pkgconfigdir], 194 [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],, 195 [with_noarch_pkgconfigdir=]pkg_default) 196 AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir]) 197 m4_popdef([pkg_default]) 198 m4_popdef([pkg_description]) 199 ]) dnl PKG_NOARCH_INSTALLDIR 200 201 202 # PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE, 203 # [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) 204 # ------------------------------------------- 205 # Retrieves the value of the pkg-config variable for the given module. 206 AC_DEFUN([PKG_CHECK_VAR], 207 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 208 AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl 209 210 _PKG_CONFIG([$1], [variable="][$3]["], [$2]) 211 AS_VAR_COPY([$1], [pkg_cv_][$1]) 212 213 AS_VAR_IF([$1], [""], [$5], [$4])dnl 214 ])# PKG_CHECK_VAR 215
