e14743d1 |
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$sdl_exec_prefix != x ; then |
23 | sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix" |
24 | if test x${SDL_CONFIG+set} != xset ; then |
25 | SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config |
26 | fi |
27 | fi |
28 | if test x$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 |
32 | fi |
33 | fi |
34 | |
35 | as_save_PATH="$PATH" |
36 | if test "x$prefix" != xNONE; then |
37 | PATH="$prefix/bin:$prefix/usr/bin:$PATH" |
38 | fi |
39 | AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH]) |
40 | PATH="$as_save_PATH" |
41 | min_sdl_version=ifelse([$1], ,0.11.0,$1) |
42 | AC_MSG_CHECKING(for SDL - version >= $min_sdl_version) |
43 | no_sdl="" |
44 | if test "$SDL_CONFIG" = "no" ; then |
45 | no_sdl=yes |
46 | else |
47 | SDL_CFLAGS=`$SDL_CONFIG $sdl_config_args --cflags` |
48 | SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs` |
49 | |
50 | sdl_major_version=`$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="$CXXFLAGS" |
59 | ac_save_LIBS="$LIBS" |
60 | CFLAGS="$CFLAGS $SDL_CFLAGS" |
61 | CXXFLAGS="$CXXFLAGS $SDL_CFLAGS" |
62 | LIBS="$LIBS $SDL_LIBS" |
63 | dnl |
64 | dnl Now check if the installed SDL is sufficiently new. (Also sanity |
65 | dnl checks the results of sdl-config to some extent |
66 | dnl |
67 | rm -f conf.sdltest |
68 | AC_TRY_RUN([ |
69 | #include <stdio.h> |
70 | #include <stdlib.h> |
71 | #include <string.h> |
72 | #include "SDL.h" |
73 | |
74 | char* |
75 | my_strdup (char *str) |
76 | { |
77 | char *new_str; |
78 | |
79 | if (str) |
80 | { |
81 | new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char)); |
82 | strcpy (new_str, str); |
83 | } |
84 | else |
85 | new_str = NULL; |
86 | |
87 | return new_str; |
88 | } |
89 | |
90 | int main (int argc, char *argv[]) |
91 | { |
92 | int major, minor, micro; |
93 | char *tmp_version; |
94 | |
95 | /* This hangs on some systems (?) |
96 | system ("touch conf.sdltest"); |
97 | */ |
98 | { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); } |
99 | |
100 | /* HP/UX 9 (%@#!) writes to sscanf strings */ |
101 | tmp_version = my_strdup("$min_sdl_version"); |
102 | if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) { |
103 | printf("%s, bad version string\n", "$min_sdl_version"); |
104 | exit(1); |
105 | } |
106 | |
107 | if (($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))) |
110 | { |
111 | return 0; |
112 | } |
113 | else |
114 | { |
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"); |
121 | return 1; |
122 | } |
123 | } |
124 | |
125 | ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"]) |
126 | CFLAGS="$ac_save_CFLAGS" |
127 | CXXFLAGS="$ac_save_CXXFLAGS" |
128 | LIBS="$ac_save_LIBS" |
129 | fi |
130 | fi |
131 | if test "x$no_sdl" = x ; then |
132 | AC_MSG_RESULT(yes) |
133 | ifelse([$2], , :, [$2]) |
134 | else |
135 | AC_MSG_RESULT(no) |
136 | if test "$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." |
141 | else |
142 | if test -f conf.sdltest ; then |
143 | : |
144 | else |
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" |
149 | AC_TRY_LINK([ |
150 | #include <stdio.h> |
151 | #include "SDL.h" |
152 | |
153 | int main(int argc, char *argv[]) |
154 | { return 0; } |
155 | #undef main |
156 | #define main K_and_R_C_main |
157 | ], [ return 0; ], |
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" |
164 | echo "***" |
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="$ac_save_CXXFLAGS" |
173 | LIBS="$ac_save_LIBS" |
174 | fi |
175 | fi |
176 | SDL_CFLAGS="" |
177 | SDL_LIBS="" |
178 | ifelse([$3], , :, [$3]) |
179 | fi |
180 | AC_SUBST(SDL_CFLAGS) |
181 | AC_SUBST(SDL_LIBS) |
182 | rm -f conf.sdltest |
183 | ]) |