/[pearpc]/sdl.m4
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Annotation of /sdl.m4

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Revision 1 - (hide annotations)
Wed Sep 5 17:11:21 2007 UTC (11 years, 8 months ago) by dpavlin
File size: 6215 byte(s)
import upstream CVS
1 dpavlin 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_LIBS="$LIBS"
56     CFLAGS="$CFLAGS $SDL_CFLAGS"
57     LIBS="$LIBS $SDL_LIBS"
58     dnl
59     dnl Now check if the installed SDL is sufficiently new. (Also sanity
60     dnl checks the results of sdl-config to some extent
61     dnl
62     rm -f conf.sdltest
63     AC_TRY_RUN([
64     #include <stdio.h>
65     #include <stdlib.h>
66     #include <string.h>
67     #include "SDL.h"
68    
69     char*
70     my_strdup (char *str)
71     {
72     char *new_str;
73    
74     if (str)
75     {
76     new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
77     strcpy (new_str, str);
78     }
79     else
80     new_str = NULL;
81    
82     return new_str;
83     }
84    
85     int main (int argc, char *argv[])
86     {
87     int major, minor, micro;
88     char *tmp_version;
89    
90     /* This hangs on some systems (?)
91     system ("touch conf.sdltest");
92     */
93     { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
94    
95     /* HP/UX 9 (%@#!) writes to sscanf strings */
96     tmp_version = my_strdup("$min_sdl_version");
97     if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
98     printf("%s, bad version string\n", "$min_sdl_version");
99     exit(1);
100     }
101    
102     if (($sdl_major_version > major) ||
103     (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
104     (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
105     {
106     return 0;
107     }
108     else
109     {
110     printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
111     printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
112     printf("*** best to upgrade to the required version.\n");
113     printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
114     printf("*** to point to the correct copy of sdl-config, and remove the file\n");
115     printf("*** config.cache before re-running configure\n");
116     return 1;
117     }
118     }
119    
120     ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
121     CFLAGS="$ac_save_CFLAGS"
122     LIBS="$ac_save_LIBS"
123     fi
124     fi
125     if test "x$no_sdl" = x ; then
126     AC_MSG_RESULT(yes)
127     ifelse([$2], , :, [$2])
128     else
129     AC_MSG_RESULT(no)
130     if test "$SDL_CONFIG" = "no" ; then
131     echo "*** The sdl-config script installed by SDL could not be found"
132     echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
133     echo "*** your path, or set the SDL_CONFIG environment variable to the"
134     echo "*** full path to sdl-config."
135     else
136     if test -f conf.sdltest ; then
137     :
138     else
139     echo "*** Could not run SDL test program, checking why..."
140     CFLAGS="$CFLAGS $SDL_CFLAGS"
141     LIBS="$LIBS $SDL_LIBS"
142     AC_TRY_LINK([
143     #include <stdio.h>
144     #include "SDL.h"
145    
146     int main(int argc, char *argv[])
147     { return 0; }
148     #undef main
149     #define main K_and_R_C_main
150     ], [ return 0; ],
151     [ echo "*** The test program compiled, but did not run. This usually means"
152     echo "*** that the run-time linker is not finding SDL or finding the wrong"
153     echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
154     echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
155     echo "*** to the installed location Also, make sure you have run ldconfig if that"
156     echo "*** is required on your system"
157     echo "***"
158     echo "*** If you have an old version installed, it is best to remove it, although"
159     echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
160     [ echo "*** The test program failed to compile or link. See the file config.log for the"
161     echo "*** exact error that occured. This usually means SDL was incorrectly installed"
162     echo "*** or that you have moved SDL since it was installed. In the latter case, you"
163     echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
164     CFLAGS="$ac_save_CFLAGS"
165     LIBS="$ac_save_LIBS"
166     fi
167     fi
168     SDL_CFLAGS=""
169     SDL_LIBS=""
170     ifelse([$3], , :, [$3])
171     fi
172     AC_SUBST(SDL_CFLAGS)
173     AC_SUBST(SDL_LIBS)
174     rm -f conf.sdltest
175     ])

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