1 # pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
3 # Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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.
24 # PKG_PROG_PKG_CONFIG([MIN-VERSION])
25 # ----------------------------------
26 AC_DEFUN([PKG_PROG_PKG_CONFIG],
27 [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
28 m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
29 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
30 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
31 AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
33 if test -n "$PKG_CONFIG"; then
34 _pkg_min_version=m4_default([$1], [0.9.0])
35 AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
36 if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
44 ])# PKG_PROG_PKG_CONFIG
46 # PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
48 # Check to see whether a particular set of modules exists. Similar
49 # to PKG_CHECK_MODULES(), but does not set variables or print errors.
52 # Similar to PKG_CHECK_MODULES, make sure that the first instance of
53 # this or PKG_CHECK_MODULES is called, or make sure to call
54 # PKG_CHECK_EXISTS manually
55 # --------------------------------------------------------------
56 AC_DEFUN([PKG_CHECK_EXISTS],
57 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
58 if test -n "$PKG_CONFIG" && \
59 AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
60 m4_ifval([$2], [$2], [:])
66 # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
67 # ---------------------------------------------
68 m4_define([_PKG_CONFIG],
69 [if test -n "$PKG_CONFIG"; then
70 if test -n "$$1"; then
73 PKG_CHECK_EXISTS([$3],
74 [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
82 # _PKG_SHORT_ERRORS_SUPPORTED
83 # -----------------------------
84 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
85 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
86 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
87 _pkg_short_errors_supported=yes
89 _pkg_short_errors_supported=no
91 ])# _PKG_SHORT_ERRORS_SUPPORTED
94 # PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
95 # [ACTION-IF-NOT-FOUND])
98 # Note that if there is a possibility the first call to
99 # PKG_CHECK_MODULES might not happen, you should be sure to include an
100 # explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
103 # --------------------------------------------------------------
104 AC_DEFUN([PKG_CHECK_MODULES],
105 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
106 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
107 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
110 AC_MSG_CHECKING([for $1])
112 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
113 _PKG_CONFIG([$1][_LIBS], [libs], [$2])
115 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
116 and $1[]_LIBS to avoid the need to call pkg-config.
117 See the pkg-config man page for more details.])
119 if test $pkg_failed = yes; then
120 _PKG_SHORT_ERRORS_SUPPORTED
121 if test $_pkg_short_errors_supported = yes; then
122 $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
124 $1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
126 # Put the nasty error message in config.log where it belongs
127 echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
129 ifelse([$4], , [AC_MSG_ERROR(dnl
130 [Package requirements ($2) were not met:
134 Consider adjusting the PKG_CONFIG_PATH environment variable if you
135 installed software in a non-standard prefix.
140 elif test $pkg_failed = untried; then
141 ifelse([$4], , [AC_MSG_FAILURE(dnl
142 [The pkg-config script could not be found or is too old. Make sure it
143 is in your PATH or set the PKG_CONFIG environment variable to the full
148 To get pkg-config, see <http://www.freedesktop.org/software/pkgconfig>.])],
151 $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
152 $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
154 ifelse([$3], , :, [$3])
156 ])# PKG_CHECK_MODULES
158 # ===========================================================================
159 # http://www.gnu.org/software/autoconf-archive/ax_cflags_gcc_option.html
160 # ===========================================================================
164 # AX_CFLAGS_GCC_OPTION (optionflag [,[shellvar][,[A][,[NA]]])
168 # AX_CFLAGS_GCC_OPTION(-fvomit-frame) would show a message as like
169 # "checking CFLAGS for gcc -fvomit-frame ... yes" and adds the optionflag
170 # to CFLAGS if it is understood. You can override the shellvar-default of
171 # CFLAGS of course. The order of arguments stems from the explicit macros
172 # like AX_CFLAGS_WARN_ALL.
174 # The cousin AX_CXXFLAGS_GCC_OPTION would check for an option to add to
175 # CXXFLAGS - and it uses the autoconf setup for C++ instead of C (since it
176 # is possible to use different compilers for C and C++).
178 # The macro is a lot simpler than any special AX_CFLAGS_* macro (or
179 # ax_cxx_rtti.m4 macro) but allows to check for arbitrary options.
180 # However, if you use this macro in a few places, it would be great if you
181 # would make up a new function-macro and submit it to the ac-archive.
183 # - $1 option-to-check-for : required ("-option" as non-value)
184 # - $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other case)
185 # - $3 action-if-found : add value to shellvariable
186 # - $4 action-if-not-found : nothing
188 # Note: in earlier versions, $1-$2 were swapped. We try to detect the
189 # situation and accept a $2=~/-/ as being the old option-to-check-for.
191 # There are other variants that emerged from the original macro variant
192 # which did just test an option to be possibly added. However, some
193 # compilers accept an option silently, or possibly for just another option
194 # that was not intended. Therefore, we have to do a generic test for a
195 # compiler family. For gcc we check "-pedantic" being accepted which is
196 # also understood by compilers who just want to be compatible with gcc
197 # even when not being made from gcc sources.
199 # See also: AX_CFLAGS_SUN_OPTION, AX_CFLAGS_HPUX_OPTION,
200 # AX_CFLAGS_AIX_OPTION, and AX_CFLAGS_IRIX_OPTION.
204 # Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
206 # This program is free software; you can redistribute it and/or modify it
207 # under the terms of the GNU General Public License as published by the
208 # Free Software Foundation; either version 2 of the License, or (at your
209 # option) any later version.
211 # This program is distributed in the hope that it will be useful, but
212 # WITHOUT ANY WARRANTY; without even the implied warranty of
213 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
214 # Public License for more details.
216 # You should have received a copy of the GNU General Public License along
217 # with this program. If not, see <http://www.gnu.org/licenses/>.
219 # As a special exception, the respective Autoconf Macro's copyright owner
220 # gives unlimited permission to copy, distribute and modify the configure
221 # scripts that are the output of Autoconf when processing the Macro. You
222 # need not follow the terms of the GNU General Public License when using
223 # or distributing such scripts, even though portions of the text of the
224 # Macro appear in them. The GNU General Public License (GPL) does govern
225 # all other use of the material that constitutes the Autoconf Macro.
227 # This special exception to the GPL applies to versions of the Autoconf
228 # Macro released by the Autoconf Archive. When you make and distribute a
229 # modified version of the Autoconf Macro, you may extend this special
230 # exception to the GPL to apply to your modified version as well.
232 AC_DEFUN([AX_CFLAGS_GCC_OPTION_OLD], [dnl
233 AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
234 AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$2])dnl
235 AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
236 VAR,[VAR="no, unknown"
239 ac_save_[]FLAGS="$[]FLAGS"
241 in "-pedantic -Werror % m4_ifval($2,$2,-option)" dnl GCC
242 "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete" dnl new GCC
244 do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
245 AC_TRY_COMPILE([],[return 0;],
246 [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
248 FLAGS="$ac_save_[]FLAGS"
252 .ok|.ok,*) m4_ifvaln($3,$3) ;;
253 .|.no|.no,*) m4_ifvaln($4,$4) ;;
255 if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
256 then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
257 else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
258 m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
261 AS_VAR_POPDEF([VAR])dnl
262 AS_VAR_POPDEF([FLAGS])dnl
266 dnl the only difference - the LANG selection... and the default FLAGS
268 AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_OLD], [dnl
269 AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
270 AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$2])dnl
271 AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
272 VAR,[VAR="no, unknown"
275 ac_save_[]FLAGS="$[]FLAGS"
277 in "-pedantic -Werror % m4_ifval($2,$2,-option)" dnl GCC
278 "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete" dnl new GCC
280 do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
281 AC_TRY_COMPILE([],[return 0;],
282 [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
284 FLAGS="$ac_save_[]FLAGS"
288 .ok|.ok,*) m4_ifvaln($3,$3) ;;
289 .|.no|.no,*) m4_ifvaln($4,$4) ;;
291 if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
292 then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
293 else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
294 m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
297 AS_VAR_POPDEF([VAR])dnl
298 AS_VAR_POPDEF([FLAGS])dnl
301 dnl -------------------------------------------------------------------------
303 AC_DEFUN([AX_CFLAGS_GCC_OPTION_NEW], [dnl
304 AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
305 AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$1])dnl
306 AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
307 VAR,[VAR="no, unknown"
310 ac_save_[]FLAGS="$[]FLAGS"
312 in "-pedantic -Werror % m4_ifval($1,$1,-option)" dnl GCC
313 "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete" dnl new GCC
315 do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
316 AC_TRY_COMPILE([],[return 0;],
317 [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
319 FLAGS="$ac_save_[]FLAGS"
323 .ok|.ok,*) m4_ifvaln($3,$3) ;;
324 .|.no|.no,*) m4_ifvaln($4,$4) ;;
326 if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
327 then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
328 else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
329 m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
332 AS_VAR_POPDEF([VAR])dnl
333 AS_VAR_POPDEF([FLAGS])dnl
337 dnl the only difference - the LANG selection... and the default FLAGS
339 AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_NEW], [dnl
340 AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
341 AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$1])dnl
342 AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
343 VAR,[VAR="no, unknown"
346 ac_save_[]FLAGS="$[]FLAGS"
348 in "-pedantic -Werror % m4_ifval($1,$1,-option)" dnl GCC
349 "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete" dnl new GCC
351 do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
352 AC_TRY_COMPILE([],[return 0;],
353 [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
355 FLAGS="$ac_save_[]FLAGS"
359 .ok|.ok,*) m4_ifvaln($3,$3) ;;
360 .|.no|.no,*) m4_ifvaln($4,$4) ;;
362 if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
363 then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
364 else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
365 m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
368 AS_VAR_POPDEF([VAR])dnl
369 AS_VAR_POPDEF([FLAGS])dnl
372 AC_DEFUN([AX_CFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
373 [AX_CFLAGS_GCC_OPTION_NEW($@)],[AX_CFLAGS_GCC_OPTION_OLD($@)])])
375 AC_DEFUN([AX_CXXFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
376 [AX_CXXFLAGS_GCC_OPTION_NEW($@)],[AX_CXXFLAGS_GCC_OPTION_OLD($@)])])