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_SDL([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_SDL],
15 dnl Get the cflags and libraries from the sdl-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 if test x$sdl_exec_prefix != x ; then
25 sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix"
26 if test x${SDL_CONFIG+set} != xset ; then
27 SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config
30 if test x$sdl_prefix != x ; then
31 sdl_config_args="$sdl_config_args --prefix=$sdl_prefix"
32 if test x${SDL_CONFIG+set} != xset ; then
33 SDL_CONFIG=$sdl_prefix/bin/sdl-config
38 if test "x$prefix" != xNONE; then
39 PATH="$prefix/bin:$prefix/usr/bin:$PATH"
41 AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH])
43 min_sdl_version=ifelse([$1], ,0.11.0,$1)
44 AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
46 if test "$SDL_CONFIG" = "no" ; then
49 SDL_CFLAGS=`$SDL_CONFIG $sdl_config_args --cflags`
50 SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs`
52 sdl_major_version=`$SDL_CONFIG $sdl_config_args --version | \
53 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
54 sdl_minor_version=`$SDL_CONFIG $sdl_config_args --version | \
55 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
56 sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
57 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
58 if test "x$enable_sdltest" = "xyes" ; then
59 ac_save_CFLAGS="$CFLAGS"
60 ac_save_CXXFLAGS="$CXXFLAGS"
62 CFLAGS="$CFLAGS $SDL_CFLAGS"
63 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
64 LIBS="$LIBS $SDL_LIBS"
66 dnl Now check if the installed SDL is sufficiently new. (Also sanity
67 dnl checks the results of sdl-config to some extent
83 new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
84 strcpy (new_str, str);
92 int main (int argc, char *argv[])
94 int major, minor, micro;
97 /* This hangs on some systems (?)
98 system ("touch conf.sdltest");
100 { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
102 /* HP/UX 9 (%@#!) writes to sscanf strings */
103 tmp_version = my_strdup("$min_sdl_version");
104 if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
105 printf("%s, bad version string\n", "$min_sdl_version");
109 if (($sdl_major_version > major) ||
110 (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
111 (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
117 printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
118 printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
119 printf("*** best to upgrade to the required version.\n");
120 printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
121 printf("*** to point to the correct copy of sdl-config, and remove the file\n");
122 printf("*** config.cache before re-running configure\n");
127 ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
128 CFLAGS="$ac_save_CFLAGS"
129 CXXFLAGS="$ac_save_CXXFLAGS"
133 if test "x$no_sdl" = x ; then
135 ifelse([$2], , :, [$2])
138 if test "$SDL_CONFIG" = "no" ; then
139 echo "*** The sdl-config script installed by SDL could not be found"
140 echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
141 echo "*** your path, or set the SDL_CONFIG environment variable to the"
142 echo "*** full path to sdl-config."
144 if test -f conf.sdltest ; then
147 echo "*** Could not run SDL test program, checking why..."
148 CFLAGS="$CFLAGS $SDL_CFLAGS"
149 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
150 LIBS="$LIBS $SDL_LIBS"
155 int main(int argc, char *argv[])
158 #define main K_and_R_C_main
160 [ echo "*** The test program compiled, but did not run. This usually means"
161 echo "*** that the run-time linker is not finding SDL or finding the wrong"
162 echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
163 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
164 echo "*** to the installed location Also, make sure you have run ldconfig if that"
165 echo "*** is required on your system"
167 echo "*** If you have an old version installed, it is best to remove it, although"
168 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
169 [ echo "*** The test program failed to compile or link. See the file config.log for the"
170 echo "*** exact error that occured. This usually means SDL was incorrectly installed"
171 echo "*** or that you have moved SDL since it was installed. In the latter case, you"
172 echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
173 CFLAGS="$ac_save_CFLAGS"
174 CXXFLAGS="$ac_save_CXXFLAGS"
180 ifelse([$3], , :, [$3])