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