sdl.m4
author Sam Lantinga <slouken@libsdl.org>
Sun, 14 Oct 2001 20:30:10 +0000
changeset 206 b69bb2a368a0
parent 172 37e3ca9254c7
child 221 50620ec9c86a
permissions -rw-r--r--
Fixed flashing the screen when creating a window on BeOS
     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 dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
     9 dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
    10 dnl
    11 AC_DEFUN(AM_PATH_SDL,
    12 [dnl 
    13 dnl Get the cflags and libraries from the sdl-config script
    14 dnl
    15 AC_ARG_WITH(sdl-prefix,[  --with-sdl-prefix=PFX   Prefix where SDL is installed (optional)],
    16             sdl_prefix="$withval", sdl_prefix="")
    17 AC_ARG_WITH(sdl-exec-prefix,[  --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
    18             sdl_exec_prefix="$withval", sdl_exec_prefix="")
    19 AC_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   AC_PATH_PROG(SDL_CONFIG, sdl-config, no)
    37   min_sdl_version=ifelse([$1], ,0.11.0,$1)
    38   AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
    39   no_sdl=""
    40   if test "$SDL_CONFIG" = "no" ; then
    41     no_sdl=yes
    42   else
    43     SDL_CFLAGS=`$SDL_CONFIG $sdlconf_args --cflags`
    44     SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs`
    45 
    46     sdl_major_version=`$SDL_CONFIG $sdl_args --version | \
    47            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    48     sdl_minor_version=`$SDL_CONFIG $sdl_args --version | \
    49            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    50     sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
    51            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
    52     if test "x$enable_sdltest" = "xyes" ; then
    53       ac_save_CFLAGS="$CFLAGS"
    54       ac_save_LIBS="$LIBS"
    55       CFLAGS="$CFLAGS $SDL_CFLAGS"
    56       LIBS="$LIBS $SDL_LIBS"
    57 dnl
    58 dnl Now check if the installed SDL is sufficiently new. (Also sanity
    59 dnl checks the results of sdl-config to some extent
    60 dnl
    61       rm -f conf.sdltest
    62       case "$target" in
    63           *-*-darwin*)
    64             cp -r `$SDL_CONFIG --nib` .
    65             dnl create an Info.plist file, unless one exists
    66             if test -f Info.plist ; then
    67              :
    68             else
    69              cp `$SDL_CONFIG --plist` .
    70             fi
    71               ;;
    72       esac
    73       AC_TRY_RUN([
    74 #include <stdio.h>
    75 #include <stdlib.h>
    76 #include <string.h>
    77 #include "SDL.h"
    78 
    79 char*
    80 my_strdup (char *str)
    81 {
    82   char *new_str;
    83   
    84   if (str)
    85     {
    86       new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
    87       strcpy (new_str, str);
    88     }
    89   else
    90     new_str = NULL;
    91   
    92   return new_str;
    93 }
    94 
    95 int main (int argc, char *argv[])
    96 {
    97   int major, minor, micro;
    98   char *tmp_version;
    99 
   100   /* This hangs on some systems (?)
   101   system ("touch conf.sdltest");
   102   */
   103   { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
   104 
   105   /* HP/UX 9 (%@#!) writes to sscanf strings */
   106   tmp_version = my_strdup("$min_sdl_version");
   107   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
   108      printf("%s, bad version string\n", "$min_sdl_version");
   109      exit(1);
   110    }
   111 
   112    if (($sdl_major_version > major) ||
   113       (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
   114       (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
   115     {
   116       return 0;
   117     }
   118   else
   119     {
   120       printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
   121       printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
   122       printf("*** best to upgrade to the required version.\n");
   123       printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
   124       printf("*** to point to the correct copy of sdl-config, and remove the file\n");
   125       printf("*** config.cache before re-running configure\n");
   126       return 1;
   127     }
   128 }
   129 
   130 ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
   131        CFLAGS="$ac_save_CFLAGS"
   132        LIBS="$ac_save_LIBS"
   133      fi
   134   fi
   135   if test "x$no_sdl" = x ; then
   136      AC_MSG_RESULT(yes)
   137      ifelse([$2], , :, [$2])     
   138   else
   139      AC_MSG_RESULT(no)
   140      if test "$SDL_CONFIG" = "no" ; then
   141        echo "*** The sdl-config script installed by SDL could not be found"
   142        echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
   143        echo "*** your path, or set the SDL_CONFIG environment variable to the"
   144        echo "*** full path to sdl-config."
   145      else
   146        if test -f conf.sdltest ; then
   147         :
   148        else
   149           echo "*** Could not run SDL test program, checking why..."
   150           CFLAGS="$CFLAGS $SDL_CFLAGS"
   151           LIBS="$LIBS $SDL_LIBS"
   152           AC_TRY_LINK([
   153 #include <stdio.h>
   154 #include "SDL.h"
   155 
   156 int main(int argc, char *argv[])
   157 { return 0; }
   158 #undef  main
   159 #define main K_and_R_C_main
   160 ],      [ return 0; ],
   161         [ echo "*** The test program compiled, but did not run. This usually means"
   162           echo "*** that the run-time linker is not finding SDL or finding the wrong"
   163           echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
   164           echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
   165           echo "*** to the installed location  Also, make sure you have run ldconfig if that"
   166           echo "*** is required on your system"
   167 	  echo "***"
   168           echo "*** If you have an old version installed, it is best to remove it, although"
   169           echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
   170         [ echo "*** The test program failed to compile or link. See the file config.log for the"
   171           echo "*** exact error that occured. This usually means SDL was incorrectly installed"
   172           echo "*** or that you have moved SDL since it was installed. In the latter case, you"
   173           echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
   174           CFLAGS="$ac_save_CFLAGS"
   175           LIBS="$ac_save_LIBS"
   176        fi
   177      fi
   178      SDL_CFLAGS=""
   179      SDL_LIBS=""
   180      ifelse([$3], , :, [$3])
   181   fi
   182   AC_SUBST(SDL_CFLAGS)
   183   AC_SUBST(SDL_LIBS)
   184       case "$target" in
   185           *-*-darwin*)
   186               SDL_APPLE_CREATOR="????"
   187               AC_SUBST(SDL_APPLE_CREATOR)
   188               ;;
   189       esac
   190   rm -f conf.sdltest
   191 ])