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
8 dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
9 dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
11 AC_DEFUN([AM_PATH_SDL],
13 dnl Get the cflags and libraries from the sdl-config script
15 AC_ARG_WITH(sdl-prefix,[ --with-sdl-prefix=PFX Prefix where SDL is installed (optional)],
16 sdl_prefix="$withval", sdl_prefix="")
17 AC_ARG_WITH(sdl-exec-prefix,[ --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
18 sdl_exec_prefix="$withval", sdl_exec_prefix="")
19 AC_ARG_ENABLE(sdltest, [ --disable-sdltest Do not try to compile and run a test SDL program],
22 if test x$sdl_exec_prefix != x ; then
23 sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix"
24 if test x${SDL_CONFIG+set} != xset ; then
25 SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config
28 if test x$sdl_prefix != x ; then
29 sdl_config_args="$sdl_config_args --prefix=$sdl_prefix"
30 if test x${SDL_CONFIG+set} != xset ; then
31 SDL_CONFIG=$sdl_prefix/bin/sdl-config
36 if test "x$prefix" != xNONE; then
37 PATH="$prefix/bin:$prefix/usr/bin:$PATH"
39 AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH])
41 min_sdl_version=ifelse([$1], ,0.11.0,$1)
42 AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
44 if test "$SDL_CONFIG" = "no" ; then
47 SDL_CFLAGS=`$SDL_CONFIG $sdl_config_args --cflags`
48 SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs`
50 sdl_major_version=`$SDL_CONFIG $sdl_config_args --version | \
51 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
52 sdl_minor_version=`$SDL_CONFIG $sdl_config_args --version | \
53 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
54 sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
55 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
56 if test "x$enable_sdltest" = "xyes" ; then
57 ac_save_CFLAGS="$CFLAGS"
58 ac_save_CXXFLAGS="$CXXFLAGS"
60 CFLAGS="$CFLAGS $SDL_CFLAGS"
61 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
62 LIBS="$LIBS $SDL_LIBS"
64 dnl Now check if the installed SDL is sufficiently new. (Also sanity
65 dnl checks the results of sdl-config to some extent
81 new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
82 strcpy (new_str, str);
90 int main (int argc, char *argv[])
92 int major, minor, micro;
95 /* This hangs on some systems (?)
96 system ("touch conf.sdltest");
98 { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
100 /* HP/UX 9 (%@#!) writes to sscanf strings */
101 tmp_version = my_strdup("$min_sdl_version");
102 if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
103 printf("%s, bad version string\n", "$min_sdl_version");
107 if (($sdl_major_version > major) ||
108 (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
109 (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
115 printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
116 printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
117 printf("*** best to upgrade to the required version.\n");
118 printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
119 printf("*** to point to the correct copy of sdl-config, and remove the file\n");
120 printf("*** config.cache before re-running configure\n");
125 ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
126 CFLAGS="$ac_save_CFLAGS"
127 CXXFLAGS="$ac_save_CXXFLAGS"
131 if test "x$no_sdl" = x ; then
133 ifelse([$2], , :, [$2])
136 if test "$SDL_CONFIG" = "no" ; then
137 echo "*** The sdl-config script installed by SDL could not be found"
138 echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
139 echo "*** your path, or set the SDL_CONFIG environment variable to the"
140 echo "*** full path to sdl-config."
142 if test -f conf.sdltest ; then
145 echo "*** Could not run SDL test program, checking why..."
146 CFLAGS="$CFLAGS $SDL_CFLAGS"
147 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
148 LIBS="$LIBS $SDL_LIBS"
153 int main(int argc, char *argv[])
156 #define main K_and_R_C_main
158 [ echo "*** The test program compiled, but did not run. This usually means"
159 echo "*** that the run-time linker is not finding SDL or finding the wrong"
160 echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
161 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
162 echo "*** to the installed location Also, make sure you have run ldconfig if that"
163 echo "*** is required on your system"
165 echo "*** If you have an old version installed, it is best to remove it, although"
166 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
167 [ echo "*** The test program failed to compile or link. See the file config.log for the"
168 echo "*** exact error that occured. This usually means SDL was incorrectly installed"
169 echo "*** or that you have moved SDL since it was installed. In the latter case, you"
170 echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
171 CFLAGS="$ac_save_CFLAGS"
172 CXXFLAGS="$ac_save_CXXFLAGS"
178 ifelse([$3], , :, [$3])