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 $sdlconf_args --libs` 54 55 sdl_major_version=`$SDL_CONFIG $sdl_args --version | \ 56 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` 57 sdl_minor_version=`$SDL_CONFIG $sdl_args --version | \ 58 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` 59 sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \ 60 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` 61 if test "x$enable_sdltest" = "xyes" ; then 62 ac_save_CFLAGS="$CFLAGS" 63 ac_save_LIBS="$LIBS" 64 CFLAGS="$CFLAGS $SDL_CFLAGS" 65 LIBS="$LIBS $SDL_LIBS" 66dnl 67dnl Now check if the installed SDL is sufficiently new. (Also sanity 68dnl checks the results of sdl-config to some extent 69dnl 70 rm -f conf.sdltest 71 AC_TRY_RUN([ 72#include <stdio.h> 73#include <stdlib.h> 74#include <string.h> 75#include "SDL.h" 76 77char* 78my_strdup (char *str) 79{ 80 char *new_str; 81 82 if (str) 83 { 84 new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char)); 85 strcpy (new_str, str); 86 } 87 else 88 new_str = NULL; 89 90 return new_str; 91} 92 93int main (int argc, char *argv[]) 94{ 95 int major, minor, micro; 96 char *tmp_version; 97 98 /* This hangs on some systems (?) 99 system ("touch conf.sdltest"); 100 */ 101 { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); } 102 103 /* HP/UX 9 (%@#!) writes to sscanf strings */ 104 tmp_version = my_strdup("$min_sdl_version"); 105 if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) { 106 printf("%s, bad version string\n", "$min_sdl_version"); 107 exit(1); 108 } 109 110 if (($sdl_major_version > major) || 111 (($sdl_major_version == major) && ($sdl_minor_version > minor)) || 112 (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro))) 113 { 114 return 0; 115 } 116 else 117 { 118 printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version); 119 printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro); 120 printf("*** best to upgrade to the required version.\n"); 121 printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n"); 122 printf("*** to point to the correct copy of sdl-config, and remove the file\n"); 123 printf("*** config.cache before re-running configure\n"); 124 return 1; 125 } 126} 127 128],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"]) 129 CFLAGS="$ac_save_CFLAGS" 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 $SDL_CFLAGS" 149 LIBS="$LIBS $SDL_LIBS" 150 AC_TRY_LINK([ 151#include <stdio.h> 152#include "SDL.h" 153 154int main(int argc, char *argv[]) 155{ return 0; } 156#undef main 157#define main K_and_R_C_main 158], [ return 0; ], 159 [ echo "*** The test program compiled, but did not run. This usually means" 160 echo "*** that the run-time linker is not finding SDL or finding the wrong" 161 echo "*** version of SDL. If it is not finding SDL, you'll need to set your" 162 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" 163 echo "*** to the installed location Also, make sure you have run ldconfig if that" 164 echo "*** is required on your system" 165 echo "***" 166 echo "*** If you have an old version installed, it is best to remove it, although" 167 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"], 168 [ echo "*** The test program failed to compile or link. See the file config.log for the" 169 echo "*** exact error that occured. This usually means SDL was incorrectly installed" 170 echo "*** or that you have moved SDL since it was installed. In the latter case, you" 171 echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ]) 172 CFLAGS="$ac_save_CFLAGS" 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]) 184 185