1# stuff for SDL, hope this helps if we put it here 2 3# Configure paths for SDL 4# Sam Lantinga 9/21/99 5# stolen from Manish Singh 6# stolen back from Frank Belew 7# stolen from Manish Singh 8# Shamelessly stolen from Owen Taylor 9 10dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]]) 11dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS 12dnl 13AC_DEFUN([AM_PATH_SDL], 14[dnl 15dnl Get the cflags and libraries from the sdl-config script 16dnl 17AC_ARG_WITH(sdl-prefix, 18 AC_HELP_STRING([--with-sdl-prefix=PFX], 19 [prefix where SDL is installed (optional)]), 20 sdl_prefix="$withval", sdl_prefix="") 21 22AC_ARG_WITH(sdl-exec-prefix, 23 AC_HELP_STRING([--with-sdl-exec-prefix=PFX], 24 [exec prefix where SDL is installed (optional)]), 25 sdl_exec_prefix="$withval", sdl_exec_prefix="") 26 27AC_ARG_ENABLE(sdltest, 28 AC_HELP_STRING([--disable-sdltest], 29 [do not try to compile and run a test SDL program]), 30 , enable_sdltest=yes) 31 32 if test x$sdl_exec_prefix != x ; then 33 sdl_args="$sdl_args --exec-prefix=$sdl_exec_prefix" 34 if test x${SDL_CONFIG+set} != xset ; then 35 SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config 36 fi 37 fi 38 if test x$sdl_prefix != x ; then 39 sdl_args="$sdl_args --prefix=$sdl_prefix" 40 if test x${SDL_CONFIG+set} != xset ; then 41 SDL_CONFIG=$sdl_prefix/bin/sdl-config 42 fi 43 fi 44 45 AC_PATH_PROG(SDL_CONFIG, sdl-config, no) 46 min_sdl_version=ifelse([$1], ,0.11.0,$1) 47 AC_MSG_CHECKING(for SDL - version >= $min_sdl_version) 48 no_sdl="" 49 if test "$SDL_CONFIG" = "no" ; then 50 no_sdl=yes 51 else 52 SDL_CFLAGS=`$SDL_CONFIG $sdlconf_args --cflags` 53 SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs` 54 SDL_STATIC_LIBS=`$SDL_CONFIG $sdlconf_args --static-libs` 55 56 57 sdl_major_version=`$SDL_CONFIG $sdl_args --version | \ 58 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` 59 sdl_minor_version=`$SDL_CONFIG $sdl_args --version | \ 60 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` 61 sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \ 62 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` 63 if test "x$enable_sdltest" = "xyes" ; then 64 ac_save_CFLAGS="$CFLAGS" 65 ac_save_LIBS="$LIBS" 66 CFLAGS="$CFLAGS $SDL_CFLAGS" 67 LIBS="$LIBS $SDL_STATIC_LIBS" 68dnl 69dnl Now check if the installed SDL is sufficiently new. (Also sanity 70dnl checks the results of sdl-config to some extent 71dnl 72 rm -f conf.sdltest 73 AC_TRY_RUN([ 74#include <stdio.h> 75#include <stdlib.h> 76#include <string.h> 77#include "SDL.h" 78 79char* 80my_strdup (char *str) 81{ 82 char *new_str; 83 84 if (str) 85 { 86 new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char)); 87 strcpy (new_str, str); 88 } 89 else 90 new_str = NULL; 91 92 return new_str; 93} 94 95int main (int argc, char *argv[]) 96{ 97 int major, minor, micro; 98 char *tmp_version; 99 100 /* This hangs on some systems (?) 101 system ("touch conf.sdltest"); 102 */ 103 { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); } 104 105 /* HP/UX 9 (%@#!) writes to sscanf strings */ 106 tmp_version = my_strdup("$min_sdl_version"); 107 if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) { 108 printf("%s, bad version string\n", "$min_sdl_version"); 109 exit(1); 110 } 111 112 if (($sdl_major_version > major) || 113 (($sdl_major_version == major) && ($sdl_minor_version > minor)) || 114 (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro))) 115 { 116 return 0; 117 } 118 else 119 { 120 printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version); 121 printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro); 122 printf("*** best to upgrade to the required version.\n"); 123 printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n"); 124 printf("*** to point to the correct copy of sdl-config, and remove the file\n"); 125 printf("*** config.cache before re-running configure\n"); 126 return 1; 127 } 128} 129 130],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"]) 131 CFLAGS="$ac_save_CFLAGS" 132 LIBS="$ac_save_LIBS" 133 fi 134 fi 135 if test "x$no_sdl" = x ; then 136 AC_MSG_RESULT(yes) 137 ifelse([$2], , :, [$2]) 138 else 139 AC_MSG_RESULT(no) 140 if test "$SDL_CONFIG" = "no" ; then 141 echo "*** The sdl-config script installed by SDL could not be found" 142 echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in" 143 echo "*** your path, or set the SDL_CONFIG environment variable to the" 144 echo "*** full path to sdl-config." 145 else 146 if test -f conf.sdltest ; then 147 : 148 else 149 echo "*** Could not run SDL test program, checking why..." 150 CFLAGS="$CFLAGS $SDL_CFLAGS" 151 LIBS="$LIBS $SDL_LIBS" 152 AC_TRY_LINK([ 153#include <stdio.h> 154#include "SDL.h" 155 156int main(int argc, char *argv[]) 157{ return 0; } 158#undef main 159#define main K_and_R_C_main 160], [ return 0; ], 161 [ echo "*** The test program compiled, but did not run. This usually means" 162 echo "*** that the run-time linker is not finding SDL or finding the wrong" 163 echo "*** version of SDL. If it is not finding SDL, you'll need to set your" 164 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" 165 echo "*** to the installed location Also, make sure you have run ldconfig if that" 166 echo "*** is required on your system" 167 echo "***" 168 echo "*** If you have an old version installed, it is best to remove it, although" 169 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"], 170 [ echo "*** The test program failed to compile or link. See the file config.log for the" 171 echo "*** exact error that occured. This usually means SDL was incorrectly installed" 172 echo "*** or that you have moved SDL since it was installed. In the latter case, you" 173 echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ]) 174 CFLAGS="$ac_save_CFLAGS" 175 LIBS="$ac_save_LIBS" 176 fi 177 fi 178 SDL_CFLAGS="" 179 SDL_LIBS="" 180 ifelse([$3], , :, [$3]) 181 fi 182 AC_SUBST(SDL_CFLAGS) 183 AC_SUBST(SDL_LIBS) 184 rm -f conf.sdltest 185]) 186 187