sdl.m4
author Ryan C. Gordon <icculus@icculus.org>
Thu, 19 Jan 2006 08:43:00 +0000
changeset 1251 86d0d01290ea
parent 1118 65f4b2dd46b7
child 1550 31c2b8e4885e
permissions -rw-r--r--
Updated Windows CE/PocketPC support...adds GAPI driver, landscape mode,
updated project files, VS2005 support, VGA mode, more device support, etc,
etc, etc.

Fixes Bugzilla #47 and #28.

--ryan.
     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   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 $SDL_LIBS"
    60 dnl
    61 dnl Now check if the installed SDL is sufficiently new. (Also sanity
    62 dnl checks the results of sdl-config to some extent
    63 dnl
    64       rm -f conf.sdltest
    65       AC_TRY_RUN([
    66 #include <stdio.h>
    67 #include <stdlib.h>
    68 #include <string.h>
    69 #include "SDL.h"
    70 
    71 char*
    72 my_strdup (char *str)
    73 {
    74   char *new_str;
    75   
    76   if (str)
    77     {
    78       new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
    79       strcpy (new_str, str);
    80     }
    81   else
    82     new_str = NULL;
    83   
    84   return new_str;
    85 }
    86 
    87 int main (int argc, char *argv[])
    88 {
    89   int major, minor, micro;
    90   char *tmp_version;
    91 
    92   /* This hangs on some systems (?)
    93   system ("touch conf.sdltest");
    94   */
    95   { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
    96 
    97   /* HP/UX 9 (%@#!) writes to sscanf strings */
    98   tmp_version = my_strdup("$min_sdl_version");
    99   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 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 
   149 int 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 ])