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 2 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,[ --with-sdl-prefix=PFX Prefix where SDL is installed (optional)], 18 sdl_prefix="$withval", sdl_prefix="") 19AC_ARG_WITH(sdl-exec-prefix,[ --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)], 20 sdl_exec_prefix="$withval", sdl_exec_prefix="") 21AC_ARG_ENABLE(sdltest, [ --disable-sdltest Do not try to compile and run a test SDL program], 22 , enable_sdltest=yes) 23 24 min_sdl_version=ifelse([$1], ,1.2.0,$1) 25 26 if test "x$sdl_prefix$sdl_exec_prefix" = x ; then 27 PKG_CHECK_MODULES([SDL], [sdl >= $min_sdl_version], 28 [sdl_pc=yes], 29 [sdl_pc=no]) 30 else 31 sdl_pc=no 32 if test x$sdl_exec_prefix != x ; then 33 sdl_config_args="$sdl_config_args --exec-prefix=$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$sdl_prefix != x ; then 39 sdl_config_args="$sdl_config_args --prefix=$sdl_prefix" 40 if test x${SDL_CONFIG+set} != xset ; then 41 SDL_CONFIG=$sdl_prefix/bin/sdl-config 42 fi 43 fi 44 fi 45 46 if test "x$sdl_pc" = xyes ; then 47 no_sdl="" 48 SDL_CONFIG="pkg-config sdl" 49 else 50 as_save_PATH="$PATH" 51 if test "x$prefix" != xNONE && test "$cross_compiling" != yes; then 52 PATH="$prefix/bin:$prefix/usr/bin:$PATH" 53 fi 54 AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH]) 55 PATH="$as_save_PATH" 56 AC_MSG_CHECKING(for SDL - version >= $min_sdl_version) 57 no_sdl="" 58 59 if test "$SDL_CONFIG" = "no" ; then 60 no_sdl=yes 61 else 62 SDL_CFLAGS=`$SDL_CONFIG $sdl_config_args --cflags` 63 SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs` 64 65 sdl_major_version=`$SDL_CONFIG $sdl_config_args --version | \ 66 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` 67 sdl_minor_version=`$SDL_CONFIG $sdl_config_args --version | \ 68 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` 69 sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \ 70 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` 71 if test "x$enable_sdltest" = "xyes" ; then 72 ac_save_CFLAGS="$CFLAGS" 73 ac_save_CXXFLAGS="$CXXFLAGS" 74 ac_save_LIBS="$LIBS" 75 CFLAGS="$CFLAGS $SDL_CFLAGS" 76 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS" 77 LIBS="$LIBS $SDL_LIBS" 78dnl 79dnl Now check if the installed SDL is sufficiently new. (Also sanity 80dnl checks the results of sdl-config to some extent 81dnl 82 rm -f conf.sdltest 83 AC_RUN_IFELSE([AC_LANG_SOURCE([[ 84#include <stdio.h> 85#include <stdlib.h> 86#include "SDL.h" 87 88int main (int argc, char *argv[]) 89{ 90 int major, minor, micro; 91 FILE *fp = fopen("conf.sdltest", "w"); 92 93 if (fp) fclose(fp); 94 95 if (sscanf("$min_sdl_version", "%d.%d.%d", &major, &minor, µ) != 3) { 96 printf("%s, bad version string\n", "$min_sdl_version"); 97 exit(1); 98 } 99 100 if (($sdl_major_version > major) || 101 (($sdl_major_version == major) && ($sdl_minor_version > minor)) || 102 (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro))) 103 { 104 return 0; 105 } 106 else 107 { 108 printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version); 109 printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro); 110 printf("*** best to upgrade to the required version.\n"); 111 printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n"); 112 printf("*** to point to the correct copy of sdl-config, and remove the file\n"); 113 printf("*** config.cache before re-running configure\n"); 114 return 1; 115 } 116} 117 118]])], [], [no_sdl=yes], [echo $ac_n "cross compiling; assumed OK... $ac_c"]) 119 CFLAGS="$ac_save_CFLAGS" 120 CXXFLAGS="$ac_save_CXXFLAGS" 121 LIBS="$ac_save_LIBS" 122 fi 123 fi 124 if test "x$no_sdl" = x ; then 125 AC_MSG_RESULT(yes) 126 else 127 AC_MSG_RESULT(no) 128 fi 129 fi 130 if test "x$no_sdl" = x ; then 131 ifelse([$2], , :, [$2]) 132 else 133 if test "$SDL_CONFIG" = "no" ; then 134 echo "*** The sdl-config script installed by SDL could not be found" 135 echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in" 136 echo "*** your path, or set the SDL_CONFIG environment variable to the" 137 echo "*** full path to sdl-config." 138 else 139 if test -f conf.sdltest ; then 140 : 141 else 142 echo "*** Could not run SDL test program, checking why..." 143 CFLAGS="$CFLAGS $SDL_CFLAGS" 144 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS" 145 LIBS="$LIBS $SDL_LIBS" 146 AC_LINK_IFELSE([AC_LANG_PROGRAM([[ 147#include <stdio.h> 148#include "SDL.h" 149 150int main(int argc, char *argv[]) 151{ return 0; } 152#undef main 153#define main K_and_R_C_main 154]], [[ return 0; ]])], 155 [ echo "*** The test program compiled, but did not run. This usually means" 156 echo "*** that the run-time linker is not finding SDL or finding the wrong" 157 echo "*** version of SDL. If it is not finding SDL, you'll need to set your" 158 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" 159 echo "*** to the installed location Also, make sure you have run ldconfig if that" 160 echo "*** is required on your system" 161 echo "***" 162 echo "*** If you have an old version installed, it is best to remove it, although" 163 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"], 164 [ echo "*** The test program failed to compile or link. See the file config.log for the" 165 echo "*** exact error that occured. This usually means SDL was incorrectly installed" 166 echo "*** or that you have moved SDL since it was installed. In the latter case, you" 167 echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ]) 168 CFLAGS="$ac_save_CFLAGS" 169 CXXFLAGS="$ac_save_CXXFLAGS" 170 LIBS="$ac_save_LIBS" 171 fi 172 fi 173 SDL_CFLAGS="" 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