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comparison sdl.m4 @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
parents
children cf2af46e9e2a
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-1:000000000000 0:74212992fb08
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_PATH_PROG(SDL_CONFIG, sdl-config, no)
36 min_sdl_version=ifelse([$1], ,0.11.0,$1)
37 AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
38 no_sdl=""
39 if test "$SDL_CONFIG" = "no" ; then
40 no_sdl=yes
41 else
42 SDL_CFLAGS=`$SDL_CONFIG $sdlconf_args --cflags`
43 SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs`
44
45 sdl_major_version=`$SDL_CONFIG $sdl_args --version | \
46 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
47 sdl_minor_version=`$SDL_CONFIG $sdl_args --version | \
48 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
49 sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
50 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
51 if test "x$enable_sdltest" = "xyes" ; then
52 ac_save_CFLAGS="$CFLAGS"
53 ac_save_LIBS="$LIBS"
54 CFLAGS="$CFLAGS $SDL_CFLAGS"
55 LIBS="$LIBS $SDL_LIBS"
56 dnl
57 dnl Now check if the installed SDL is sufficiently new. (Also sanity
58 dnl checks the results of sdl-config to some extent
59 dnl
60 rm -f conf.sdltest
61 AC_TRY_RUN([
62 #include <stdio.h>
63 #include <stdlib.h>
64 #include <string.h>
65 #include "SDL.h"
66
67 char*
68 my_strdup (char *str)
69 {
70 char *new_str;
71
72 if (str)
73 {
74 new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
75 strcpy (new_str, str);
76 }
77 else
78 new_str = NULL;
79
80 return new_str;
81 }
82
83 int main (int argc, char *argv[])
84 {
85 int major, minor, micro;
86 char *tmp_version;
87
88 /* This hangs on some systems (?)
89 system ("touch conf.sdltest");
90 */
91 { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
92
93 /* HP/UX 9 (%@#!) writes to sscanf strings */
94 tmp_version = my_strdup("$min_sdl_version");
95 if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
96 printf("%s, bad version string\n", "$min_sdl_version");
97 exit(1);
98 }
99
100 if (($sdl_major_version > major) ||
101 (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
102 (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
103 {
104 return 0;
105 }
106 else
107 {
108 printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
109 printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
110 printf("*** best to upgrade to the required version.\n");
111 printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
112 printf("*** to point to the correct copy of sdl-config, and remove the file\n");
113 printf("*** config.cache before re-running configure\n");
114 return 1;
115 }
116 }
117
118 ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
119 CFLAGS="$ac_save_CFLAGS"
120 LIBS="$ac_save_LIBS"
121 fi
122 fi
123 if test "x$no_sdl" = x ; then
124 AC_MSG_RESULT(yes)
125 ifelse([$2], , :, [$2])
126 else
127 AC_MSG_RESULT(no)
128 if test "$SDL_CONFIG" = "no" ; then
129 echo "*** The sdl-config script installed by SDL could not be found"
130 echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
131 echo "*** your path, or set the SDL_CONFIG environment variable to the"
132 echo "*** full path to sdl-config."
133 else
134 if test -f conf.sdltest ; then
135 :
136 else
137 echo "*** Could not run SDL test program, checking why..."
138 CFLAGS="$CFLAGS $SDL_CFLAGS"
139 LIBS="$LIBS $SDL_LIBS"
140 AC_TRY_LINK([
141 #include <stdio.h>
142 #include "SDL.h"
143 ], [ return 0; ],
144 [ echo "*** The test program compiled, but did not run. This usually means"
145 echo "*** that the run-time linker is not finding SDL or finding the wrong"
146 echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
147 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
148 echo "*** to the installed location Also, make sure you have run ldconfig if that"
149 echo "*** is required on your system"
150 echo "***"
151 echo "*** If you have an old version installed, it is best to remove it, although"
152 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
153 [ echo "*** The test program failed to compile or link. See the file config.log for the"
154 echo "*** exact error that occured. This usually means SDL was incorrectly installed"
155 echo "*** or that you have moved SDL since it was installed. In the latter case, you"
156 echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
157 CFLAGS="$ac_save_CFLAGS"
158 LIBS="$ac_save_LIBS"
159 fi
160 fi
161 SDL_CFLAGS=""
162 SDL_LIBS=""
163 ifelse([$3], , :, [$3])
164 fi
165 AC_SUBST(SDL_CFLAGS)
166 AC_SUBST(SDL_LIBS)
167 rm -f conf.sdltest
168 ])