1 # pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*- 2 # serial 12 (pkg-config-0.29.2) 3 4 dnl Copyright 2004 Scott James Remnant <scott (a] netsplit.com>. 5 dnl Copyright 2012-2015 Dan Nicholson <dbn.lists (a] gmail.com> 6 dnl 7 dnl This program is free software; you can redistribute it and/or modify 8 dnl it under the terms of the GNU General Public License as published by 9 dnl the Free Software Foundation; either version 2 of the License, or 10 dnl (at your option) any later version. 11 dnl 12 dnl This program is distributed in the hope that it will be useful, but 13 dnl WITHOUT ANY WARRANTY; without even the implied warranty of 14 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 dnl General Public License for more details. 16 dnl 17 dnl You should have received a copy of the GNU General Public License 18 dnl along with this program; if not, write to the Free Software 19 dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 20 dnl 02111-1307, USA. 21 dnl 22 dnl As a special exception to the GNU General Public License, if you 23 dnl distribute this file as part of a program that contains a 24 dnl configuration script generated by Autoconf, you may include it under 25 dnl the same distribution terms that you use for the rest of that 26 dnl program. 27 28 dnl PKG_PREREQ(MIN-VERSION) 29 dnl ----------------------- 30 dnl Since: 0.29 31 dnl 32 dnl Verify that the version of the pkg-config macros are at least 33 dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's 34 dnl installed version of pkg-config, this checks the developer's version 35 dnl of pkg.m4 when generating configure. 36 dnl 37 dnl To ensure that this macro is defined, also add: 38 dnl m4_ifndef([PKG_PREREQ], 39 dnl [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])]) 40 dnl 41 dnl See the "Since" comment for each macro you use to see what version 42 dnl of the macros you require. 43 m4_defun([PKG_PREREQ], 44 [m4_define([PKG_MACROS_VERSION], [0.29.2]) 45 m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1, 46 [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])]) 47 ])dnl PKG_PREREQ 48 49 dnl PKG_PROG_PKG_CONFIG([MIN-VERSION]) 50 dnl ---------------------------------- 51 dnl Since: 0.16 52 dnl 53 dnl Search for the pkg-config tool and set the PKG_CONFIG variable to 54 dnl first found in the path. Checks that the version of pkg-config found 55 dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is 56 dnl used since that's the first version where most current features of 57 dnl pkg-config existed. 58 AC_DEFUN([PKG_PROG_PKG_CONFIG], 59 [m4_pattern_forbid([^_?PKG_[A-Z_]+$]) 60 m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$]) 61 m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$]) 62 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) 63 AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) 64 AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) 65 66 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then 67 AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) 68 fi 69 if test -n "$PKG_CONFIG"; then 70 _pkg_min_version=m4_default([$1], [0.9.0]) 71 AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) 72 if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then 73 AC_MSG_RESULT([yes]) 74 else 75 AC_MSG_RESULT([no]) 76 PKG_CONFIG="" 77 fi 78 fi[]dnl 79 ])dnl PKG_PROG_PKG_CONFIG 80 81 dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) 82 dnl ------------------------------------------------------------------- 83 dnl Since: 0.18 84 dnl 85 dnl Check to see whether a particular set of modules exists. Similar to 86 dnl PKG_CHECK_MODULES(), but does not set variables or print errors. 87 dnl 88 dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 89 dnl only at the first occurence in configure.ac, so if the first place 90 dnl it's called might be skipped (such as if it is within an "if", you 91 dnl have to call PKG_CHECK_EXISTS manually 92 AC_DEFUN([PKG_CHECK_EXISTS], 93 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 94 if test -n "$PKG_CONFIG" && \ 95 AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then 96 m4_default([$2], [:]) 97 m4_ifvaln([$3], [else 98 $3])dnl 99 fi]) 100 101 dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) 102 dnl --------------------------------------------- 103 dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting 104 dnl pkg_failed based on the result. 105 m4_define([_PKG_CONFIG], 106 [if test -n "$$1"; then 107 pkg_cv_[]$1="$$1" 108 elif test -n "$PKG_CONFIG"; then 109 PKG_CHECK_EXISTS([$3], 110 [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null` 111 test "x$?" != "x0" && pkg_failed=yes ], 112 [pkg_failed=yes]) 113 else 114 pkg_failed=untried 115 fi[]dnl 116 ])dnl _PKG_CONFIG 117 118 dnl _PKG_SHORT_ERRORS_SUPPORTED 119 dnl --------------------------- 120 dnl Internal check to see if pkg-config supports short errors. 121 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED], 122 [AC_REQUIRE([PKG_PROG_PKG_CONFIG]) 123 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then 124 _pkg_short_errors_supported=yes 125 else 126 _pkg_short_errors_supported=no 127 fi[]dnl 128 ])dnl _PKG_SHORT_ERRORS_SUPPORTED 129 130 131 dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], 132 dnl [ACTION-IF-NOT-FOUND]) 133 dnl -------------------------------------------------------------- 134 dnl Since: 0.4.0 135 dnl 136 dnl Note that if there is a possibility the first call to 137 dnl PKG_CHECK_MODULES might not happen, you should be sure to include an 138 dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac 139 AC_DEFUN([PKG_CHECK_MODULES], 140 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 141 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl 142 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl 143 144 pkg_failed=no 145 AC_MSG_CHECKING([for $2]) 146 147 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2]) 148 _PKG_CONFIG([$1][_LIBS], [libs], [$2]) 149 150 dnl Check whether $pkg_cv_[]$1[]_LIBS works. 151 if test $pkg_failed = no; then 152 pkg_save_LDFLAGS="$LDFLAGS" 153 LDFLAGS="$LDFLAGS $pkg_cv_[]$1[]_LIBS" 154 AC_TRY_LINK([],[], [], [pkg_failed=yes]) 155 LDFLAGS=$pkg_save_LDFLAGS 156 fi 157 158 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS 159 and $1[]_LIBS to avoid the need to call pkg-config. 160 See the pkg-config man page for more details.]) 161 162 if test $pkg_failed = yes; then 163 AC_MSG_RESULT([no]) 164 _PKG_SHORT_ERRORS_SUPPORTED 165 if test $_pkg_short_errors_supported = yes; then 166 $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1` 167 else 168 $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1` 169 fi 170 # Put the nasty error message in config.log where it belongs 171 echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD 172 173 m4_default([$4], [AC_MSG_ERROR( 174 [Package requirements ($2) were not met: 175 176 $$1_PKG_ERRORS 177 178 Consider adjusting the PKG_CONFIG_PATH environment variable if you 179 installed software in a non-standard prefix. 180 181 _PKG_TEXT])[]dnl 182 ]) 183 elif test $pkg_failed = untried; then 184 AC_MSG_RESULT([no]) 185 m4_default([$4], [AC_MSG_FAILURE( 186 [The pkg-config script could not be found or is too old. Make sure it 187 is in your PATH or set the PKG_CONFIG environment variable to the full 188 path to pkg-config. 189 190 _PKG_TEXT 191 192 To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl 193 ]) 194 else 195 $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS 196 $1[]_LIBS=$pkg_cv_[]$1[]_LIBS 197 AC_MSG_RESULT([yes]) 198 $3 199 fi[]dnl 200 ])dnl PKG_CHECK_MODULES 201 202 203 dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], 204 dnl [ACTION-IF-NOT-FOUND]) 205 dnl --------------------------------------------------------------------- 206 dnl Since: 0.29 207 dnl 208 dnl Checks for existence of MODULES and gathers its build flags with 209 dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags 210 dnl and VARIABLE-PREFIX_LIBS from --libs. 211 dnl 212 dnl Note that if there is a possibility the first call to 213 dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to 214 dnl include an explicit call to PKG_PROG_PKG_CONFIG in your 215 dnl configure.ac. 216 AC_DEFUN([PKG_CHECK_MODULES_STATIC], 217 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 218 _save_PKG_CONFIG=$PKG_CONFIG 219 PKG_CONFIG="$PKG_CONFIG --static" 220 PKG_CHECK_MODULES($@) 221 PKG_CONFIG=$_save_PKG_CONFIG[]dnl 222 ])dnl PKG_CHECK_MODULES_STATIC 223 224 225 dnl PKG_INSTALLDIR([DIRECTORY]) 226 dnl ------------------------- 227 dnl Since: 0.27 228 dnl 229 dnl Substitutes the variable pkgconfigdir as the location where a module 230 dnl should install pkg-config .pc files. By default the directory is 231 dnl $libdir/pkgconfig, but the default can be changed by passing 232 dnl DIRECTORY. The user can override through the --with-pkgconfigdir 233 dnl parameter. 234 AC_DEFUN([PKG_INSTALLDIR], 235 [m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])]) 236 m4_pushdef([pkg_description], 237 [pkg-config installation directory @<:@]pkg_default[@:>@]) 238 AC_ARG_WITH([pkgconfigdir], 239 [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],, 240 [with_pkgconfigdir=]pkg_default) 241 AC_SUBST([pkgconfigdir], [$with_pkgconfigdir]) 242 m4_popdef([pkg_default]) 243 m4_popdef([pkg_description]) 244 ])dnl PKG_INSTALLDIR 245 246 247 dnl PKG_NOARCH_INSTALLDIR([DIRECTORY]) 248 dnl -------------------------------- 249 dnl Since: 0.27 250 dnl 251 dnl Substitutes the variable noarch_pkgconfigdir as the location where a 252 dnl module should install arch-independent pkg-config .pc files. By 253 dnl default the directory is $datadir/pkgconfig, but the default can be 254 dnl changed by passing DIRECTORY. The user can override through the 255 dnl --with-noarch-pkgconfigdir parameter. 256 AC_DEFUN([PKG_NOARCH_INSTALLDIR], 257 [m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])]) 258 m4_pushdef([pkg_description], 259 [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@]) 260 AC_ARG_WITH([noarch-pkgconfigdir], 261 [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],, 262 [with_noarch_pkgconfigdir=]pkg_default) 263 AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir]) 264 m4_popdef([pkg_default]) 265 m4_popdef([pkg_description]) 266 ])dnl PKG_NOARCH_INSTALLDIR 267 268 269 dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE, 270 dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) 271 dnl ------------------------------------------- 272 dnl Since: 0.28 273 dnl 274 dnl Retrieves the value of the pkg-config variable for the given module. 275 AC_DEFUN([PKG_CHECK_VAR], 276 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl 277 AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl 278 279 _PKG_CONFIG([$1], [variable="][$3]["], [$2]) 280 AS_VAR_COPY([$1], [pkg_cv_][$1]) 281 282 AS_VAR_IF([$1], [""], [$5], [$4])dnl 283 ])dnl PKG_CHECK_VAR 284
Indexes created Tue Mar 03 05:31:39 UTC 2026