sdl.m4
author Ozkan Sezer <sezeroz@gmail.com>
Sun, 14 Oct 2018 15:25:04 +0300
branchSDL-1.2
changeset 12325 c4f2eeda176f
parent 11962 6d7d78d2d864
permissions -rw-r--r--
remove symlink for libSDL-1.0.so.0 from the rpm spec file.

also fix a changelog date.
     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 1
     9 
    10 dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
    11 dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
    12 dnl
    13 AC_DEFUN([AM_PATH_SDL],
    14 [dnl 
    15 dnl Get the cflags and libraries from the sdl-config script
    16 dnl
    17 AC_ARG_WITH(sdl-prefix,[  --with-sdl-prefix=PFX   Prefix where SDL is installed (optional)],
    18             sdl_prefix="$withval", sdl_prefix="")
    19 AC_ARG_WITH(sdl-exec-prefix,[  --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
    20             sdl_exec_prefix="$withval", sdl_exec_prefix="")
    21 AC_ARG_ENABLE(sdltest, [  --disable-sdltest       Do not try to compile and run a test SDL program],
    22 		    , enable_sdltest=yes)
    23 
    24   if test x$sdl_exec_prefix != x ; then
    25     sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix"
    26     if test x${SDL_CONFIG+set} != xset ; then
    27       SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config
    28     fi
    29   fi
    30   if test x$sdl_prefix != x ; then
    31     sdl_config_args="$sdl_config_args --prefix=$sdl_prefix"
    32     if test x${SDL_CONFIG+set} != xset ; then
    33       SDL_CONFIG=$sdl_prefix/bin/sdl-config
    34     fi
    35   fi
    36 
    37   as_save_PATH="$PATH"
    38   if test "x$prefix" != xNONE && test "$cross_compiling" != yes; then
    39     PATH="$prefix/bin:$prefix/usr/bin:$PATH"
    40   fi
    41   AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH])
    42   PATH="$as_save_PATH"
    43   min_sdl_version=ifelse([$1], ,0.11.0,$1)
    44   AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
    45   no_sdl=""
    46   if test "$SDL_CONFIG" = "no" ; then
    47     no_sdl=yes
    48   else
    49     SDL_CFLAGS=`$SDL_CONFIG $sdl_config_args --cflags`
    50     SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs`
    51 
    52     sdl_major_version=`$SDL_CONFIG $sdl_config_args --version | \
    53            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    54     sdl_minor_version=`$SDL_CONFIG $sdl_config_args --version | \
    55            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    56     sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
    57            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
    58     if test "x$enable_sdltest" = "xyes" ; then
    59       ac_save_CFLAGS="$CFLAGS"
    60       ac_save_CXXFLAGS="$CXXFLAGS"
    61       ac_save_LIBS="$LIBS"
    62       CFLAGS="$CFLAGS $SDL_CFLAGS"
    63       CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
    64       LIBS="$LIBS $SDL_LIBS"
    65 dnl
    66 dnl Now check if the installed SDL is sufficiently new. (Also sanity
    67 dnl checks the results of sdl-config to some extent
    68 dnl
    69       rm -f conf.sdltest
    70       AC_TRY_RUN([
    71 #include <stdio.h>
    72 #include <stdlib.h>
    73 #include <string.h>
    74 #include "SDL.h"
    75 
    76 char*
    77 my_strdup (char *str)
    78 {
    79   char *new_str;
    80   
    81   if (str)
    82     {
    83       new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
    84       strcpy (new_str, str);
    85     }
    86   else
    87     new_str = NULL;
    88   
    89   return new_str;
    90 }
    91 
    92 int main (int argc, char *argv[])
    93 {
    94   int major, minor, micro;
    95   char *tmp_version;
    96 
    97   /* This hangs on some systems (?)
    98   system ("touch conf.sdltest");
    99   */
   100   { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
   101 
   102   /* HP/UX 9 (%@#!) writes to sscanf strings */
   103   tmp_version = my_strdup("$min_sdl_version");
   104   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
   105      printf("%s, bad version string\n", "$min_sdl_version");
   106      exit(1);
   107    }
   108 
   109    if (($sdl_major_version > major) ||
   110       (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
   111       (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
   112     {
   113       return 0;
   114     }
   115   else
   116     {
   117       printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
   118       printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
   119       printf("*** best to upgrade to the required version.\n");
   120       printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
   121       printf("*** to point to the correct copy of sdl-config, and remove the file\n");
   122       printf("*** config.cache before re-running configure\n");
   123       return 1;
   124     }
   125 }
   126 
   127 ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
   128        CFLAGS="$ac_save_CFLAGS"
   129        CXXFLAGS="$ac_save_CXXFLAGS"
   130        LIBS="$ac_save_LIBS"
   131      fi
   132   fi
   133   if test "x$no_sdl" = x ; then
   134      AC_MSG_RESULT(yes)
   135      ifelse([$2], , :, [$2])     
   136   else
   137      AC_MSG_RESULT(no)
   138      if test "$SDL_CONFIG" = "no" ; then
   139        echo "*** The sdl-config script installed by SDL could not be found"
   140        echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
   141        echo "*** your path, or set the SDL_CONFIG environment variable to the"
   142        echo "*** full path to sdl-config."
   143      else
   144        if test -f conf.sdltest ; then
   145         :
   146        else
   147           echo "*** Could not run SDL test program, checking why..."
   148           CFLAGS="$CFLAGS $SDL_CFLAGS"
   149           CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
   150           LIBS="$LIBS $SDL_LIBS"
   151           AC_TRY_LINK([
   152 #include <stdio.h>
   153 #include "SDL.h"
   154 
   155 int main(int argc, char *argv[])
   156 { return 0; }
   157 #undef  main
   158 #define main K_and_R_C_main
   159 ],      [ return 0; ],
   160         [ echo "*** The test program compiled, but did not run. This usually means"
   161           echo "*** that the run-time linker is not finding SDL or finding the wrong"
   162           echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
   163           echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
   164           echo "*** to the installed location  Also, make sure you have run ldconfig if that"
   165           echo "*** is required on your system"
   166 	  echo "***"
   167           echo "*** If you have an old version installed, it is best to remove it, although"
   168           echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
   169         [ echo "*** The test program failed to compile or link. See the file config.log for the"
   170           echo "*** exact error that occured. This usually means SDL was incorrectly installed"
   171           echo "*** or that you have moved SDL since it was installed. In the latter case, you"
   172           echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
   173           CFLAGS="$ac_save_CFLAGS"
   174           CXXFLAGS="$ac_save_CXXFLAGS"
   175           LIBS="$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   rm -f conf.sdltest
   185 ])