1 # Configure paths for SDL
3 # stolen from Manish Singh
4 # stolen back from Frank Belew
5 # stolen from Manish Singh
6 # Shamelessly stolen from Owen Taylor
10 dnl AM_PATH_SDL2([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
11 dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
13 AC_DEFUN([AM_PATH_SDL2],
15 dnl Get the cflags and libraries from the sdl2-config script
17 AC_ARG_WITH(sdl-prefix,[ --with-sdl-prefix=PFX Prefix where SDL is installed (optional)],
18 sdl_prefix="$withval", sdl_prefix="")
19 AC_ARG_WITH(sdl-exec-prefix,[ --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
20 sdl_exec_prefix="$withval", sdl_exec_prefix="")
21 AC_ARG_ENABLE(sdltest, [ --disable-sdltest Do not try to compile and run a test SDL program],
24 min_sdl_version=ifelse([$1], ,2.0.0,$1)
26 if test "x$sdl_prefix$sdl_exec_prefix" = x ; then
27 PKG_CHECK_MODULES([SDL], [sdl2 >= $min_sdl_version],
32 if test x$sdl_exec_prefix != x ; then
33 sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix"
34 if test x${SDL2_CONFIG+set} != xset ; then
35 SDL2_CONFIG=$sdl_exec_prefix/bin/sdl2-config
38 if test x$sdl_prefix != x ; then
39 sdl_config_args="$sdl_config_args --prefix=$sdl_prefix"
40 if test x${SDL2_CONFIG+set} != xset ; then
41 SDL2_CONFIG=$sdl_prefix/bin/sdl2-config
46 if test "x$sdl_pc" = xyes ; then
48 SDL2_CONFIG="pkg-config sdl2"
51 if test "x$prefix" != xNONE && test "$cross_compiling" != yes; then
52 PATH="$prefix/bin:$prefix/usr/bin:$PATH"
54 AC_PATH_PROG(SDL2_CONFIG, sdl2-config, no, [$PATH])
56 AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
59 if test "$SDL2_CONFIG" = "no" ; then
62 SDL_CFLAGS=`$SDL2_CONFIG $sdl_config_args --cflags`
63 SDL_LIBS=`$SDL2_CONFIG $sdl_config_args --libs`
65 sdl_major_version=`$SDL2_CONFIG $sdl_config_args --version | \
66 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
67 sdl_minor_version=`$SDL2_CONFIG $sdl_config_args --version | \
68 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
69 sdl_micro_version=`$SDL2_CONFIG $sdl_config_args --version | \
70 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
71 if test "x$enable_sdltest" = "xyes" ; then
72 ac_save_CFLAGS="$CFLAGS"
73 ac_save_CXXFLAGS="$CXXFLAGS"
75 CFLAGS="$CFLAGS $SDL_CFLAGS"
76 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
77 LIBS="$LIBS $SDL_LIBS"
79 dnl Now check if the installed SDL is sufficiently new. (Also sanity
80 dnl checks the results of sdl2-config to some extent
96 new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
97 strcpy (new_str, str);
105 int main (int argc, char *argv[])
107 int major, minor, micro;
110 /* This hangs on some systems (?)
111 system ("touch conf.sdltest");
113 { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
115 /* HP/UX 9 (%@#!) writes to sscanf strings */
116 tmp_version = my_strdup("$min_sdl_version");
117 if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
118 printf("%s, bad version string\n", "$min_sdl_version");
122 if (($sdl_major_version > major) ||
123 (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
124 (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
130 printf("\n*** 'sdl2-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
131 printf("*** of SDL required is %d.%d.%d. If sdl2-config is correct, then it is\n", major, minor, micro);
132 printf("*** best to upgrade to the required version.\n");
133 printf("*** If sdl2-config was wrong, set the environment variable SDL2_CONFIG\n");
134 printf("*** to point to the correct copy of sdl2-config, and remove the file\n");
135 printf("*** config.cache before re-running configure\n");
140 ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
141 CFLAGS="$ac_save_CFLAGS"
142 CXXFLAGS="$ac_save_CXXFLAGS"
146 if test "x$no_sdl" = x ; then
152 if test "x$no_sdl" = x ; then
153 ifelse([$2], , :, [$2])
155 if test "$SDL2_CONFIG" = "no" ; then
156 echo "*** The sdl2-config script installed by SDL could not be found"
157 echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
158 echo "*** your path, or set the SDL2_CONFIG environment variable to the"
159 echo "*** full path to sdl2-config."
161 if test -f conf.sdltest ; then
164 echo "*** Could not run SDL test program, checking why..."
165 CFLAGS="$CFLAGS $SDL_CFLAGS"
166 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
167 LIBS="$LIBS $SDL_LIBS"
172 int main(int argc, char *argv[])
175 #define main K_and_R_C_main
177 [ echo "*** The test program compiled, but did not run. This usually means"
178 echo "*** that the run-time linker is not finding SDL or finding the wrong"
179 echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
180 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
181 echo "*** to the installed location Also, make sure you have run ldconfig if that"
182 echo "*** is required on your system"
184 echo "*** If you have an old version installed, it is best to remove it, although"
185 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
186 [ echo "*** The test program failed to compile or link. See the file config.log for the"
187 echo "*** exact error that occured. This usually means SDL was incorrectly installed"
188 echo "*** or that you have moved SDL since it was installed. In the latter case, you"
189 echo "*** may want to edit the sdl2-config script: $SDL2_CONFIG" ])
190 CFLAGS="$ac_save_CFLAGS"
191 CXXFLAGS="$ac_save_CXXFLAGS"
197 ifelse([$3], , :, [$3])
203 # pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
204 # serial 1 (pkg-config-0.24)
206 # Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
208 # This program is free software; you can redistribute it and/or modify
209 # it under the terms of the GNU General Public License as published by
210 # the Free Software Foundation; either version 2 of the License, or
211 # (at your option) any later version.
213 # This program is distributed in the hope that it will be useful, but
214 # WITHOUT ANY WARRANTY; without even the implied warranty of
215 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
216 # General Public License for more details.
218 # You should have received a copy of the GNU General Public License
219 # along with this program; if not, write to the Free Software
220 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
222 # As a special exception to the GNU General Public License, if you
223 # distribute this file as part of a program that contains a
224 # configuration script generated by Autoconf, you may include it under
225 # the same distribution terms that you use for the rest of that program.
227 # PKG_PROG_PKG_CONFIG([MIN-VERSION])
228 # ----------------------------------
229 AC_DEFUN([PKG_PROG_PKG_CONFIG],
230 [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
231 m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
232 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
233 AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
234 AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
236 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
237 AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
239 if test -n "$PKG_CONFIG"; then
240 _pkg_min_version=m4_default([$1], [0.9.0])
241 AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
242 if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
249 ])# PKG_PROG_PKG_CONFIG
251 # PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
253 # Check to see whether a particular set of modules exists. Similar
254 # to PKG_CHECK_MODULES(), but does not set variables or print errors.
256 # Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
257 # only at the first occurence in configure.ac, so if the first place
258 # it's called might be skipped (such as if it is within an "if", you
259 # have to call PKG_CHECK_EXISTS manually
260 # --------------------------------------------------------------
261 AC_DEFUN([PKG_CHECK_EXISTS],
262 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
263 if test -n "$PKG_CONFIG" && \
264 AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
265 m4_default([$2], [:])
266 m4_ifvaln([$3], [else
270 # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
271 # ---------------------------------------------
272 m4_define([_PKG_CONFIG],
273 [if test -n "$$1"; then
275 elif test -n "$PKG_CONFIG"; then
276 PKG_CHECK_EXISTS([$3],
277 [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
284 # _PKG_SHORT_ERRORS_SUPPORTED
285 # -----------------------------
286 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
287 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
288 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
289 _pkg_short_errors_supported=yes
291 _pkg_short_errors_supported=no
293 ])# _PKG_SHORT_ERRORS_SUPPORTED
296 # PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
297 # [ACTION-IF-NOT-FOUND])
300 # Note that if there is a possibility the first call to
301 # PKG_CHECK_MODULES might not happen, you should be sure to include an
302 # explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
305 # --------------------------------------------------------------
306 AC_DEFUN([PKG_CHECK_MODULES],
307 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
308 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
309 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
312 AC_MSG_CHECKING([for $1])
314 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
315 _PKG_CONFIG([$1][_LIBS], [libs], [$2])
317 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
318 and $1[]_LIBS to avoid the need to call pkg-config.
319 See the pkg-config man page for more details.])
321 if test $pkg_failed = yes; then
323 _PKG_SHORT_ERRORS_SUPPORTED
324 if test $_pkg_short_errors_supported = yes; then
325 $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
327 $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
329 # Put the nasty error message in config.log where it belongs
330 echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
332 m4_default([$4], [AC_MSG_ERROR(
333 [Package requirements ($2) were not met:
337 Consider adjusting the PKG_CONFIG_PATH environment variable if you
338 installed software in a non-standard prefix.
342 elif test $pkg_failed = untried; then
344 m4_default([$4], [AC_MSG_FAILURE(
345 [The pkg-config script could not be found or is too old. Make sure it
346 is in your PATH or set the PKG_CONFIG environment variable to the full
351 To get pkg-config, see <http://pkg-config.freedesktop.org/>.])dnl
354 $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
355 $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
359 ])# PKG_CHECK_MODULES