1# Check for binary relocation support. 2# Written by Hongli Lai 3# http://autopackage.org/ 4 5AC_DEFUN([AM_BINRELOC], 6[ 7 AC_ARG_ENABLE(binreloc, 8 [ --enable-binreloc compile with binary relocation support 9 (default=enable when available)], 10 enable_binreloc=$enableval,enable_binreloc=auto) 11 12 BINRELOC_CFLAGS= 13 BINRELOC_LIBS= 14 if test "x$enable_binreloc" = "xauto"; then 15 AC_CHECK_FILE([/proc/self/maps]) 16 AC_CACHE_CHECK([whether everything is installed to the same prefix], 17 [br_cv_valid_prefixes], [ 18 if test "$bindir" = '${exec_prefix}/bin' -a "$sbindir" = '${exec_prefix}/sbin' -a \ 19 "$datadir" = '${prefix}/share' -a "$libdir" = '${exec_prefix}/lib' -a \ 20 "$libexecdir" = '${exec_prefix}/libexec' -a "$sysconfdir" = '${prefix}/etc' 21 then 22 br_cv_valid_prefixes=yes 23 else 24 br_cv_valid_prefixes=no 25 fi 26 ]) 27 fi 28 AC_CACHE_CHECK([whether binary relocation support should be enabled], 29 [br_cv_binreloc], 30 [if test "x$enable_binreloc" = "xyes"; then 31 br_cv_binreloc=yes 32 elif test "x$enable_binreloc" = "xauto"; then 33 if test "x$br_cv_valid_prefixes" = "xyes" -a \ 34 "x$ac_cv_file__proc_self_maps" = "xyes"; then 35 br_cv_binreloc=yes 36 else 37 br_cv_binreloc=no 38 fi 39 else 40 br_cv_binreloc=no 41 fi]) 42 43 if test "x$br_cv_binreloc" = "xyes"; then 44 BINRELOC_CFLAGS="-DENABLE_BINRELOC" 45 AC_DEFINE(ENABLE_BINRELOC,,[Use binary relocation?]) 46 fi 47 AC_SUBST(BINRELOC_CFLAGS) 48 AC_SUBST(BINRELOC_LIBS) 49]) 50 51 52# Configure paths for SDL 53# Sam Lantinga 9/21/99 54# stolen from Manish Singh 55# stolen back from Frank Belew 56# stolen from Manish Singh 57# Shamelessly stolen from Owen Taylor 58 59dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]]) 60dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS 61dnl 62AC_DEFUN([AM_PATH_SDL], 63[dnl 64dnl Get the cflags and libraries from the sdl-config script 65dnl 66AC_ARG_WITH(sdl-prefix,[ --with-sdl-prefix=PFX Prefix where SDL is installed (optional)], 67 sdl_prefix="$withval", sdl_prefix="") 68AC_ARG_WITH(sdl-exec-prefix,[ --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)], 69 sdl_exec_prefix="$withval", sdl_exec_prefix="") 70AC_ARG_ENABLE(sdltest, [ --disable-sdltest Do not try to compile and run a test SDL program], 71 , enable_sdltest=yes) 72 73 if test x$sdl_exec_prefix != x ; then 74 sdl_args="$sdl_args --exec-prefix=$sdl_exec_prefix" 75 if test x${SDL_CONFIG+set} != xset ; then 76 SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config 77 fi 78 fi 79 if test x$sdl_prefix != x ; then 80 sdl_args="$sdl_args --prefix=$sdl_prefix" 81 if test x${SDL_CONFIG+set} != xset ; then 82 SDL_CONFIG=$sdl_prefix/bin/sdl-config 83 fi 84 fi 85 86 AC_PATH_PROG(SDL_CONFIG, sdl-config, no) 87 min_sdl_version=ifelse([$1], ,0.11.0,$1) 88 AC_MSG_CHECKING(for SDL - version >= $min_sdl_version) 89 no_sdl="" 90 if test "$SDL_CONFIG" = "no" ; then 91 no_sdl=yes 92 else 93 SDL_CFLAGS=`$SDL_CONFIG $sdlconf_args --cflags` 94 SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs` 95 96 sdl_major_version=`$SDL_CONFIG $sdl_args --version | \ 97 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` 98 sdl_minor_version=`$SDL_CONFIG $sdl_args --version | \ 99 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` 100 sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \ 101 sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` 102 if test "x$enable_sdltest" = "xyes" ; then 103 ac_save_CFLAGS="$CFLAGS" 104 ac_save_LIBS="$LIBS" 105 CFLAGS="$CFLAGS $SDL_CFLAGS" 106 LIBS="$LIBS $SDL_LIBS" 107dnl 108dnl Now check if the installed SDL is sufficiently new. (Also sanity 109dnl checks the results of sdl-config to some extent 110dnl 111 rm -f conf.sdltest 112 AC_TRY_RUN([ 113#include <stdio.h> 114#include <stdlib.h> 115#include <string.h> 116#include "SDL.h" 117 118char* 119my_strdup (char *str) 120{ 121 char *new_str; 122 123 if (str) 124 { 125 new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char)); 126 strcpy (new_str, str); 127 } 128 else 129 new_str = NULL; 130 131 return new_str; 132} 133 134int main (int argc, char *argv[]) 135{ 136 int major, minor, micro; 137 char *tmp_version; 138 139 /* This hangs on some systems (?) 140 system ("touch conf.sdltest"); 141 */ 142 { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); } 143 144 /* HP/UX 9 (%@#!) writes to sscanf strings */ 145 tmp_version = my_strdup("$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*** 'sdl-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 sdl-config is correct, then it is\n", major, minor, micro); 161 printf("*** best to upgrade to the required version.\n"); 162 printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n"); 163 printf("*** to point to the correct copy of sdl-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 LIBS="$ac_save_LIBS" 172 fi 173 fi 174 if test "x$no_sdl" = x ; then 175 AC_MSG_RESULT(yes) 176 ifelse([$2], , :, [$2]) 177 else 178 AC_MSG_RESULT(no) 179 if test "$SDL_CONFIG" = "no" ; then 180 echo "*** The sdl-config script installed by SDL could not be found" 181 echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in" 182 echo "*** your path, or set the SDL_CONFIG environment variable to the" 183 echo "*** full path to sdl-config." 184 else 185 if test -f conf.sdltest ; then 186 : 187 else 188 echo "*** Could not run SDL test program, checking why..." 189 CFLAGS="$CFLAGS $SDL_CFLAGS" 190 LIBS="$LIBS $SDL_LIBS" 191 AC_TRY_LINK([ 192#include <stdio.h> 193#include "SDL.h" 194], [ return 0; ], 195 [ echo "*** The test program compiled, but did not run. This usually means" 196 echo "*** that the run-time linker is not finding SDL or finding the wrong" 197 echo "*** version of SDL. If it is not finding SDL, you'll need to set your" 198 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" 199 echo "*** to the installed location Also, make sure you have run ldconfig if that" 200 echo "*** is required on your system" 201 echo "***" 202 echo "*** If you have an old version installed, it is best to remove it, although" 203 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"], 204 [ echo "*** The test program failed to compile or link. See the file config.log for the" 205 echo "*** exact error that occured. This usually means SDL was incorrectly installed" 206 echo "*** or that you have moved SDL since it was installed. In the latter case, you" 207 echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ]) 208 CFLAGS="$ac_save_CFLAGS" 209 LIBS="$ac_save_LIBS" 210 fi 211 fi 212 SDL_CFLAGS="" 213 SDL_LIBS="" 214 ifelse([$3], , :, [$3]) 215 fi 216 AC_SUBST(SDL_CFLAGS) 217 AC_SUBST(SDL_LIBS) 218 rm -f conf.sdltest 219]) 220