visualtest/acinclude.m4
author Sam Lantinga <slouken@libsdl.org>
Tue, 23 Apr 2019 07:59:31 -0700
changeset 12714 9b7633bd0aa0
parent 7924 fcb86d323770
permissions -rw-r--r--
Use _Exit() when available
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# Configure paths for SDL
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# Sam Lantinga 9/21/99
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# stolen from Manish Singh
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# stolen back from Frank Belew
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# stolen from Manish Singh
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# Shamelessly stolen from Owen Taylor
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# serial 1
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dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
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dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
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dnl
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AC_DEFUN([AM_PATH_SDL2],
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[dnl 
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dnl Get the cflags and libraries from the sdl2-config script
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dnl
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AC_ARG_WITH(sdl-prefix,[  --with-sdl-prefix=PFX   Prefix where SDL is installed (optional)],
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            sdl_prefix="$withval", sdl_prefix="")
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AC_ARG_WITH(sdl-exec-prefix,[  --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
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            sdl_exec_prefix="$withval", sdl_exec_prefix="")
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AC_ARG_ENABLE(sdltest, [  --disable-sdltest       Do not try to compile and run a test SDL program],
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		    , enable_sdltest=yes)
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  min_sdl_version=ifelse([$1], ,0.9.0,$1)
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  if test "x$sdl_prefix$sdl_exec_prefix" = x ; then
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    PKG_CHECK_MODULES([SDL], [sdl2 >= $min_sdl_version],
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           [sdl_pc=yes],
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           [sdl_pc=no])
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  else
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    sdl_pc=no
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    if test x$sdl_exec_prefix != x ; then
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      sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix"
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      if test x${SDL_CONFIG+set} != xset ; then
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        SDL_CONFIG=$sdl_exec_prefix/bin/sdl2-config
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      fi
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    fi
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    if test x$sdl_prefix != x ; then
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      sdl_config_args="$sdl_config_args --prefix=$sdl_prefix"
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      if test x${SDL_CONFIG+set} != xset ; then
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        SDL_CONFIG=$sdl_prefix/bin/sdl2-config
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      fi
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    fi
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  fi
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  if test "x$sdl_pc" = xyes ; then
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    no_sdl=""
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    SDL_CONFIG="pkg-config sdl2"
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  else
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    as_save_PATH="$PATH"
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    if test "x$prefix" != xNONE && test "$cross_compiling" != yes; then
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      PATH="$prefix/bin:$prefix/usr/bin:$PATH"
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    fi
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    AC_PATH_PROG(SDL_CONFIG, sdl2-config, no, [$PATH])
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    PATH="$as_save_PATH"
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    AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
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    no_sdl=""
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    if test "$SDL_CONFIG" = "no" ; then
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      no_sdl=yes
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    else
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      SDL_CFLAGS=`$SDL_CONFIG $sdl_config_args --cflags`
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      SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs`
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      sdl_major_version=`$SDL_CONFIG $sdl_config_args --version | \
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             sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
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      sdl_minor_version=`$SDL_CONFIG $sdl_config_args --version | \
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             sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
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      sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
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             sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
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      if test "x$enable_sdltest" = "xyes" ; then
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        ac_save_CFLAGS="$CFLAGS"
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        ac_save_CXXFLAGS="$CXXFLAGS"
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        ac_save_LIBS="$LIBS"
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        CFLAGS="$CFLAGS $SDL_CFLAGS"
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        CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
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        LIBS="$LIBS $SDL_LIBS"
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dnl
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dnl Now check if the installed SDL is sufficiently new. (Also sanity
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dnl checks the results of sdl2-config to some extent
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dnl
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      rm -f conf.sdltest
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      AC_TRY_RUN([
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "SDL.h"
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char*
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my_strdup (char *str)
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{
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  char *new_str;
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  if (str)
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    {
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      new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
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      strcpy (new_str, str);
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    }
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  else
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    new_str = NULL;
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  return new_str;
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}
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int main (int argc, char *argv[])
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{
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  int major, minor, micro;
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  char *tmp_version;
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  /* This hangs on some systems (?)
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  system ("touch conf.sdltest");
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  */
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  { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
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  /* HP/UX 9 (%@#!) writes to sscanf strings */
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  tmp_version = my_strdup("$min_sdl_version");
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  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
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     printf("%s, bad version string\n", "$min_sdl_version");
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     exit(1);
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   }
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   if (($sdl_major_version > major) ||
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      (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
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      (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
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    {
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      return 0;
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    }
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  else
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    {
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      printf("\n*** 'sdl2-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
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      printf("*** of SDL required is %d.%d.%d. If sdl2-config is correct, then it is\n", major, minor, micro);
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      printf("*** best to upgrade to the required version.\n");
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      printf("*** If sdl2-config was wrong, set the environment variable SDL_CONFIG\n");
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      printf("*** to point to the correct copy of sdl2-config, and remove the file\n");
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      printf("*** config.cache before re-running configure\n");
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      return 1;
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    }
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}
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],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
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        CFLAGS="$ac_save_CFLAGS"
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        CXXFLAGS="$ac_save_CXXFLAGS"
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        LIBS="$ac_save_LIBS"
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      fi
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    fi
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    if test "x$no_sdl" = x ; then
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      AC_MSG_RESULT(yes)
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    else
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      AC_MSG_RESULT(no)
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    fi
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  fi
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  if test "x$no_sdl" = x ; then
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     ifelse([$2], , :, [$2])
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  else
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     if test "$SDL_CONFIG" = "no" ; then
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       echo "*** The sdl2-config script installed by SDL could not be found"
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       echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
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       echo "*** your path, or set the SDL_CONFIG environment variable to the"
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       echo "*** full path to sdl2-config."
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     else
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       if test -f conf.sdltest ; then
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        :
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       else
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          echo "*** Could not run SDL test program, checking why..."
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          CFLAGS="$CFLAGS $SDL_CFLAGS"
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          CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
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          LIBS="$LIBS $SDL_LIBS"
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          AC_TRY_LINK([
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#include <stdio.h>
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#include "SDL.h"
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int main(int argc, char *argv[])
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{ return 0; }
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#undef  main
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#define main K_and_R_C_main
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],      [ return 0; ],
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        [ echo "*** The test program compiled, but did not run. This usually means"
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          echo "*** that the run-time linker is not finding SDL or finding the wrong"
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          echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
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          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
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          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
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          echo "*** is required on your system"
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	  echo "***"
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          echo "*** If you have an old version installed, it is best to remove it, although"
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          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
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        [ echo "*** The test program failed to compile or link. See the file config.log for the"
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          echo "*** exact error that occured. This usually means SDL was incorrectly installed"
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          echo "*** or that you have moved SDL since it was installed. In the latter case, you"
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          echo "*** may want to edit the sdl2-config script: $SDL_CONFIG" ])
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          CFLAGS="$ac_save_CFLAGS"
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          CXXFLAGS="$ac_save_CXXFLAGS"
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          LIBS="$ac_save_LIBS"
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       fi
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     fi
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     SDL_CFLAGS=""
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     SDL_LIBS=""
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     ifelse([$3], , :, [$3])
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  fi
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  AC_SUBST(SDL_CFLAGS)
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  AC_SUBST(SDL_LIBS)
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  rm -f conf.sdltest
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])
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# pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
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# serial 1 (pkg-config-0.24)
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# 
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# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# As a special exception to the GNU General Public License, if you
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# distribute this file as part of a program that contains a
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# configuration script generated by Autoconf, you may include it under
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# the same distribution terms that you use for the rest of that program.
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# PKG_PROG_PKG_CONFIG([MIN-VERSION])
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# ----------------------------------
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AC_DEFUN([PKG_PROG_PKG_CONFIG],
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[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
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m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
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AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
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AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
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AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
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if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
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	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
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fi
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if test -n "$PKG_CONFIG"; then
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	_pkg_min_version=m4_default([$1], [0.9.0])
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	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
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	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
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		AC_MSG_RESULT([yes])
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	else
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		AC_MSG_RESULT([no])
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		PKG_CONFIG=""
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	fi
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fi[]dnl
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])# PKG_PROG_PKG_CONFIG
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# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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#
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# Check to see whether a particular set of modules exists.  Similar
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# to PKG_CHECK_MODULES(), but does not set variables or print errors.
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#
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# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
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# only at the first occurence in configure.ac, so if the first place
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# it's called might be skipped (such as if it is within an "if", you
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# have to call PKG_CHECK_EXISTS manually
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# --------------------------------------------------------------
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AC_DEFUN([PKG_CHECK_EXISTS],
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[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
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if test -n "$PKG_CONFIG" && \
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    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
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  m4_default([$2], [:])
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m4_ifvaln([$3], [else
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  $3])dnl
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fi])
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# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
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# ---------------------------------------------
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m4_define([_PKG_CONFIG],
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[if test -n "$$1"; then
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    pkg_cv_[]$1="$$1"
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 elif test -n "$PKG_CONFIG"; then
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    PKG_CHECK_EXISTS([$3],
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                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
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		     [pkg_failed=yes])
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 else
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    pkg_failed=untried
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fi[]dnl
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])# _PKG_CONFIG
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# _PKG_SHORT_ERRORS_SUPPORTED
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# -----------------------------
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AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
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[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
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if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
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        _pkg_short_errors_supported=yes
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else
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        _pkg_short_errors_supported=no
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fi[]dnl
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])# _PKG_SHORT_ERRORS_SUPPORTED
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# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
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# [ACTION-IF-NOT-FOUND])
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#
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#
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# Note that if there is a possibility the first call to
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# PKG_CHECK_MODULES might not happen, you should be sure to include an
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# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
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#
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#
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# --------------------------------------------------------------
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AC_DEFUN([PKG_CHECK_MODULES],
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[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
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AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
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AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
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pkg_failed=no
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AC_MSG_CHECKING([for $1])
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_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
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_PKG_CONFIG([$1][_LIBS], [libs], [$2])
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m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
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and $1[]_LIBS to avoid the need to call pkg-config.
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See the pkg-config man page for more details.])
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if test $pkg_failed = yes; then
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   	AC_MSG_RESULT([no])
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        _PKG_SHORT_ERRORS_SUPPORTED
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        if test $_pkg_short_errors_supported = yes; then
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	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
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        else 
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	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
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        fi
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	# Put the nasty error message in config.log where it belongs
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	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
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	m4_default([$4], [AC_MSG_ERROR(
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[Package requirements ($2) were not met:
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$$1_PKG_ERRORS
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Consider adjusting the PKG_CONFIG_PATH environment variable if you
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installed software in a non-standard prefix.
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_PKG_TEXT])dnl
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        ])
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elif test $pkg_failed = untried; then
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     	AC_MSG_RESULT([no])
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	m4_default([$4], [AC_MSG_FAILURE(
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[The pkg-config script could not be found or is too old.  Make sure it
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is in your PATH or set the PKG_CONFIG environment variable to the full
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path to pkg-config.
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_PKG_TEXT
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To get pkg-config, see <http://pkg-config.freedesktop.org/>.])dnl
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        ])
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else
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	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
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	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
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        AC_MSG_RESULT([yes])
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	$3
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fi[]dnl
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])# PKG_CHECK_MODULES