sdl2.m4 (8093B)
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 # Changelog: 9 # * also look for SDL2.framework under Mac OS X 10 11 # serial 1 12 13 dnl AM_PATH_SDL2([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]]) 14 dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS 15 dnl 16 AC_DEFUN([AM_PATH_SDL2], 17 [dnl 18 dnl Get the cflags and libraries from the sdl2-config script 19 dnl 20 AC_ARG_WITH(sdl-prefix,[ --with-sdl-prefix=PFX Prefix where SDL is installed (optional)], 21 sdl_prefix="$withval", sdl_prefix="") 22 AC_ARG_WITH(sdl-exec-prefix,[ --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)], 23 sdl_exec_prefix="$withval", sdl_exec_prefix="") 24 AC_ARG_ENABLE(sdltest, [ --disable-sdltest Do not try to compile and run a test SDL program], 25 , enable_sdltest=yes) 26 AC_ARG_ENABLE(sdlframework, [ --disable-sdlframework Do not search for SDL2.framework], 27 , search_sdl_framework=yes) 28 29 AC_ARG_VAR(SDL2_FRAMEWORK, [Path to SDL2.framework]) 30 31 min_sdl_version=ifelse([$1], ,2.0.0,$1) 32 33 if test "x$sdl_prefix$sdl_exec_prefix" = x ; then 34 PKG_CHECK_MODULES([SDL], [sdl2 >= $min_sdl_version], 35 [sdl_pc=yes], 36 [sdl_pc=no]) 37 else 38 sdl_pc=no 39 if test x$sdl_exec_prefix != x ; then 40 sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix" 41 if test x${SDL2_CONFIG+set} != xset ; then 42 SDL2_CONFIG=$sdl_exec_prefix/bin/sdl2-config 43 fi 44 fi 45 if test x$sdl_prefix != x ; then 46 sdl_config_args="$sdl_config_args --prefix=$sdl_prefix" 47 if test x${SDL2_CONFIG+set} != xset ; then 48 SDL2_CONFIG=$sdl_prefix/bin/sdl2-config 49 fi 50 fi 51 fi 52 53 if test "x$sdl_pc" = xyes ; then 54 no_sdl="" 55 SDL2_CONFIG="pkg-config sdl2" 56 else 57 as_save_PATH="$PATH" 58 if test "x$prefix" != xNONE && test "$cross_compiling" != yes; then 59 PATH="$prefix/bin:$prefix/usr/bin:$PATH" 60 fi 61 AC_PATH_PROG(SDL2_CONFIG, sdl2-config, no, [$PATH]) 62 PATH="$as_save_PATH" 63 no_sdl="" 64 65 if test "$SDL2_CONFIG" = "no" -a "x$search_sdl_framework" = "xyes"; then 66 AC_MSG_CHECKING(for SDL2.framework) 67 if test "x$SDL2_FRAMEWORK" != x; then 68 sdl_framework=$SDL2_FRAMEWORK 69 else 70 for d in / ~/ /System/; do 71 if test -d "$dLibrary/Frameworks/SDL2.framework"; then 72 sdl_framework="$dLibrary/Frameworks/SDL2.framework" 73 fi 74 done 75 fi 76 77 if test x"$sdl_framework" != x && test -d "$sdl_framework"; then 78 AC_MSG_RESULT($sdl_framework) 79 sdl_framework_dir=`dirname $sdl_framework` 80 SDL_CFLAGS="-F$sdl_framework_dir -Wl,-framework,SDL2 -I$sdl_framework/include" 81 SDL_LIBS="-F$sdl_framework_dir -Wl,-framework,SDL2" 82 else 83 no_sdl=yes 84 fi 85 fi 86 87 if test "$SDL2_CONFIG" != "no"; then 88 if test "x$sdl_pc" = "xno"; then 89 AC_MSG_CHECKING(for SDL - version >= $min_sdl_version) 90 SDL_CFLAGS=`$SDL2_CONFIG $sdl_config_args --cflags` 91 SDL_LIBS=`$SDL2_CONFIG $sdl_config_args --libs` 92 fi 93 94 sdl_major_version=`$SDL2_CONFIG $sdl_config_args --version | \ 95 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` 96 sdl_minor_version=`$SDL2_CONFIG $sdl_config_args --version | \ 97 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` 98 sdl_micro_version=`$SDL2_CONFIG $sdl_config_args --version | \ 99 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` 100 if test "x$enable_sdltest" = "xyes" ; then 101 ac_save_CFLAGS="$CFLAGS" 102 ac_save_CXXFLAGS="$CXXFLAGS" 103 ac_save_LIBS="$LIBS" 104 CFLAGS="$CFLAGS $SDL_CFLAGS" 105 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS" 106 LIBS="$LIBS $SDL_LIBS" 107 dnl 108 dnl Now check if the installed SDL is sufficiently new. (Also sanity 109 dnl checks the results of sdl2-config to some extent 110 dnl 111 rm -f conf.sdltest 112 AC_TRY_RUN([ 113 #include <stdio.h> 114 #include <stdlib.h> 115 #include <string.h> 116 #include "SDL.h" 117 118 char* 119 my_strdup (char *str) 120 { 121 char *new_str; 122 123 if (str) 124 { 125 new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char)); 126 strcpy (new_str, str); 127 } 128 else 129 new_str = NULL; 130 131 return new_str; 132 } 133 134 int main (int argc, char *argv[]) 135 { 136 int major, minor, micro; 137 char *tmp_version; 138 139 /* This hangs on some systems (?) 140 system ("touch conf.sdltest"); 141 */ 142 { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); } 143 144 /* HP/UX 9 (%@#!) writes to sscanf strings */ 145 tmp_version = my_strdup("$min_sdl_version"); 146 if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) { 147 printf("%s, bad version string\n", "$min_sdl_version"); 148 exit(1); 149 } 150 151 if (($sdl_major_version > major) || 152 (($sdl_major_version == major) && ($sdl_minor_version > minor)) || 153 (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro))) 154 { 155 return 0; 156 } 157 else 158 { 159 printf("\n*** 'sdl2-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version); 160 printf("*** of SDL required is %d.%d.%d. If sdl2-config is correct, then it is\n", major, minor, micro); 161 printf("*** best to upgrade to the required version.\n"); 162 printf("*** If sdl2-config was wrong, set the environment variable SDL2_CONFIG\n"); 163 printf("*** to point to the correct copy of sdl2-config, and remove the file\n"); 164 printf("*** config.cache before re-running configure\n"); 165 return 1; 166 } 167 } 168 169 ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"]) 170 CFLAGS="$ac_save_CFLAGS" 171 CXXFLAGS="$ac_save_CXXFLAGS" 172 LIBS="$ac_save_LIBS" 173 174 fi 175 if test "x$sdl_pc" = "xno"; then 176 if test "x$no_sdl" = "xyes"; then 177 AC_MSG_RESULT(no) 178 else 179 AC_MSG_RESULT(yes) 180 fi 181 fi 182 fi 183 fi 184 if test "x$no_sdl" = x ; then 185 ifelse([$2], , :, [$2]) 186 else 187 if test "$SDL2_CONFIG" = "no" ; then 188 echo "*** The sdl2-config script installed by SDL could not be found" 189 echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in" 190 echo "*** your path, or set the SDL2_CONFIG environment variable to the" 191 echo "*** full path to sdl2-config." 192 else 193 if test -f conf.sdltest ; then 194 : 195 else 196 echo "*** Could not run SDL test program, checking why..." 197 CFLAGS="$CFLAGS $SDL_CFLAGS" 198 CXXFLAGS="$CXXFLAGS $SDL_CFLAGS" 199 LIBS="$LIBS $SDL_LIBS" 200 AC_TRY_LINK([ 201 #include <stdio.h> 202 #include "SDL.h" 203 204 int main(int argc, char *argv[]) 205 { return 0; } 206 #undef main 207 #define main K_and_R_C_main 208 ], [ return 0; ], 209 [ echo "*** The test program compiled, but did not run. This usually means" 210 echo "*** that the run-time linker is not finding SDL or finding the wrong" 211 echo "*** version of SDL. If it is not finding SDL, you'll need to set your" 212 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" 213 echo "*** to the installed location Also, make sure you have run ldconfig if that" 214 echo "*** is required on your system" 215 echo "***" 216 echo "*** If you have an old version installed, it is best to remove it, although" 217 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"], 218 [ echo "*** The test program failed to compile or link. See the file config.log for the" 219 echo "*** exact error that occured. This usually means SDL was incorrectly installed" 220 echo "*** or that you have moved SDL since it was installed. In the latter case, you" 221 echo "*** may want to edit the sdl2-config script: $SDL2_CONFIG" ]) 222 CFLAGS="$ac_save_CFLAGS" 223 CXXFLAGS="$ac_save_CXXFLAGS" 224 LIBS="$ac_save_LIBS" 225 fi 226 fi 227 SDL_CFLAGS="" 228 SDL_LIBS="" 229 ifelse([$3], , :, [$3]) 230 fi 231 AC_SUBST(SDL_CFLAGS) 232 AC_SUBST(SDL_LIBS) 233 rm -f conf.sdltest 234 ])