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Tweaks for demos on MacOSX
[wxWidgets.git] / build / aclocal / sdl.m4
1 # Configure paths for SDL
2 # Sam Lantinga 9/21/99
3 # stolen from Manish Singh
4 # stolen back from Frank Belew
5 # stolen from Manish Singh
6 # Shamelessly stolen from Owen Taylor
7
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
10 dnl
11 AC_DEFUN([AM_PATH_SDL],
12 [dnl
13 dnl Get the cflags and libraries from the sdl-config script
14 dnl
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],
20 , enable_sdltest=yes)
21
22 if test x$sdl_exec_prefix != x ; then
23 sdl_args="$sdl_args --exec-prefix=$sdl_exec_prefix"
24 if test x${SDL_CONFIG+set} != xset ; then
25 SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config
26 fi
27 fi
28 if test x$sdl_prefix != x ; then
29 sdl_args="$sdl_args --prefix=$sdl_prefix"
30 if test x${SDL_CONFIG+set} != xset ; then
31 SDL_CONFIG=$sdl_prefix/bin/sdl-config
32 fi
33 fi
34
35 AC_REQUIRE([AC_CANONICAL_TARGET])
36 PATH="$prefix/bin:$prefix/usr/bin:$PATH"
37 AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH])
38 min_sdl_version=ifelse([$1], ,0.11.0,$1)
39 AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
40 no_sdl=""
41 if test "$SDL_CONFIG" = "no" ; then
42 no_sdl=yes
43 else
44 SDL_CFLAGS=`$SDL_CONFIG $sdlconf_args --cflags`
45 SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs`
46
47 sdl_major_version=`$SDL_CONFIG $sdl_args --version | \
48 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
49 sdl_minor_version=`$SDL_CONFIG $sdl_args --version | \
50 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
51 sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
52 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
53 if test "x$enable_sdltest" = "xyes" ; then
54 ac_save_CFLAGS="$CFLAGS"
55 ac_save_CXXFLAGS="$CXXFLAGS"
56 ac_save_LIBS="$LIBS"
57 CFLAGS="$CFLAGS $SDL_CFLAGS"
58 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
59 LIBS="$LIBS $SDL_LIBS"
60 dnl
61 dnl Now check if the installed SDL is sufficiently new. (Also sanity
62 dnl checks the results of sdl-config to some extent
63 dnl
64 rm -f conf.sdltest
65 AC_TRY_RUN([
66 #include <stdio.h>
67 #include <stdlib.h>
68 #include <string.h>
69 #include "SDL.h"
70
71 char*
72 my_strdup (char *str)
73 {
74 char *new_str;
75
76 if (str)
77 {
78 new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
79 strcpy (new_str, str);
80 }
81 else
82 new_str = NULL;
83
84 return new_str;
85 }
86
87 int main (int argc, char *argv[])
88 {
89 int major, minor, micro;
90 char *tmp_version;
91
92 /* This hangs on some systems (?)
93 system ("touch conf.sdltest");
94 */
95 { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
96
97 /* HP/UX 9 (%@#!) writes to sscanf strings */
98 tmp_version = my_strdup("$min_sdl_version");
99 if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
100 printf("%s, bad version string\n", "$min_sdl_version");
101 exit(1);
102 }
103
104 if (($sdl_major_version > major) ||
105 (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
106 (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
107 {
108 return 0;
109 }
110 else
111 {
112 printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
113 printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
114 printf("*** best to upgrade to the required version.\n");
115 printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
116 printf("*** to point to the correct copy of sdl-config, and remove the file\n");
117 printf("*** config.cache before re-running configure\n");
118 return 1;
119 }
120 }
121
122 ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
123 CFLAGS="$ac_save_CFLAGS"
124 CXXFLAGS="$ac_save_CXXFLAGS"
125 LIBS="$ac_save_LIBS"
126 fi
127 fi
128 if test "x$no_sdl" = x ; then
129 AC_MSG_RESULT(yes)
130 ifelse([$2], , :, [$2])
131 else
132 AC_MSG_RESULT(no)
133 if test "$SDL_CONFIG" = "no" ; then
134 echo "*** The sdl-config script installed by SDL could not be found"
135 echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
136 echo "*** your path, or set the SDL_CONFIG environment variable to the"
137 echo "*** full path to sdl-config."
138 else
139 if test -f conf.sdltest ; then
140 :
141 else
142 echo "*** Could not run SDL test program, checking why..."
143 CFLAGS="$CFLAGS $SDL_CFLAGS"
144 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
145 LIBS="$LIBS $SDL_LIBS"
146 AC_TRY_LINK([
147 #include <stdio.h>
148 #include "SDL.h"
149
150 int main(int argc, char *argv[])
151 { return 0; }
152 #undef main
153 #define main K_and_R_C_main
154 ], [ return 0; ],
155 [ echo "*** The test program compiled, but did not run. This usually means"
156 echo "*** that the run-time linker is not finding SDL or finding the wrong"
157 echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
158 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
159 echo "*** to the installed location Also, make sure you have run ldconfig if that"
160 echo "*** is required on your system"
161 echo "***"
162 echo "*** If you have an old version installed, it is best to remove it, although"
163 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
164 [ echo "*** The test program failed to compile or link. See the file config.log for the"
165 echo "*** exact error that occured. This usually means SDL was incorrectly installed"
166 echo "*** or that you have moved SDL since it was installed. In the latter case, you"
167 echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
168 CFLAGS="$ac_save_CFLAGS"
169 CXXFLAGS="$ac_save_CXXFLAGS"
170 LIBS="$ac_save_LIBS"
171 fi
172 fi
173 SDL_CFLAGS=""
174 SDL_LIBS=""
175 ifelse([$3], , :, [$3])
176 fi
177 AC_SUBST(SDL_CFLAGS)
178 AC_SUBST(SDL_LIBS)
179 rm -f conf.sdltest
180 ])