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