# Configure paths for SDL# Sam Lantinga 9/21/99# stolen from Manish Singh# stolen back from Frank Belew# stolen from Manish Singh# Shamelessly stolen from Owen Taylordnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBSdnlAC_DEFUN(AM_PATH_SDL,[dnl dnl Get the cflags and libraries from the sdl-config scriptdnlAC_ARG_WITH(sdl-prefix,[  --with-sdl-prefix=PFX   Prefix where SDL is installed (optional)],            sdl_prefix="$withval", sdl_prefix="")AC_ARG_WITH(sdl-exec-prefix,[  --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],            sdl_exec_prefix="$withval", sdl_exec_prefix="")AC_ARG_ENABLE(sdltest, [  --disable-sdltest       Do not try to compile and run a test SDL program],		    , enable_sdltest=yes)  if test x$sdl_exec_prefix != x ; then     sdl_args="$sdl_args --exec-prefix=$sdl_exec_prefix"     if test x${SDL_CONFIG+set} != xset ; then        SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config     fi  fi  if test x$sdl_prefix != x ; then     sdl_args="$sdl_args --prefix=$sdl_prefix"     if test x${SDL_CONFIG+set} != xset ; then        SDL_CONFIG=$sdl_prefix/bin/sdl-config     fi  fi  AC_PATH_PROG(SDL_CONFIG, sdl-config, no)  min_sdl_version=ifelse([$1], ,0.11.0,$1)  AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)  no_sdl=""  if test "$SDL_CONFIG" = "no" ; then    no_sdl=yes  else    SDL_CFLAGS=`$SDL_CONFIG $sdlconf_args --cflags`    SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs`    sdl_major_version=`$SDL_CONFIG $sdl_args --version | \           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`    sdl_minor_version=`$SDL_CONFIG $sdl_args --version | \           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`    sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`    if test "x$enable_sdltest" = "xyes" ; then      ac_save_CFLAGS="$CFLAGS"      ac_save_LIBS="$LIBS"      CFLAGS="$CFLAGS $SDL_CFLAGS"      LIBS="$LIBS $SDL_LIBS"dnldnl Now check if the installed SDL is sufficiently new. (Also sanitydnl checks the results of sdl-config to some extentdnl      rm -f conf.sdltest      AC_TRY_RUN([#include <stdio.h>#include <stdlib.h>#include <string.h>#include <SDL/SDL.h>char*my_strdup (char *str){  char *new_str;    if (str)    {      new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));      strcpy (new_str, str);    }  else    new_str = NULL;    return new_str;}int main (int argc, char *argv[]){  int major, minor, micro;  char *tmp_version;  /* This hangs on some systems (?)  system ("touch conf.sdltest");  */  { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }  /* HP/UX 9 (%@#!) writes to sscanf strings */  tmp_version = my_strdup("$min_sdl_version");  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {     printf("%s, bad version string\n", "$min_sdl_version");     exit(1);   }   if (($sdl_major_version > major) ||      (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||      (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))    {      return 0;    }  else    {      printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);      printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);      printf("*** best to upgrade to the required version.\n");      printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");      printf("*** to point to the correct copy of sdl-config, and remove the file\n");      printf("*** config.cache before re-running configure\n");      return 1;    }}],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])       CFLAGS="$ac_save_CFLAGS"       LIBS="$ac_save_LIBS"     fi  fi  if test "x$no_sdl" = x ; then     AC_MSG_RESULT(yes)     ifelse([$2], , :, [$2])       else     AC_MSG_RESULT(no)     if test "$SDL_CONFIG" = "no" ; then       echo "*** The sdl-config script installed by SDL could not be found"       echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"       echo "*** your path, or set the SDL_CONFIG environment variable to the"       echo "*** full path to sdl-config."     else       if test -f conf.sdltest ; then        :       else          echo "*** Could not run SDL test program, checking why..."          CFLAGS="$CFLAGS $SDL_CFLAGS"          LIBS="$LIBS $SDL_LIBS"          AC_TRY_LINK([#include <stdio.h>#include <SDL/SDL.h>],      [ return 0; ],        [ echo "*** The test program compiled, but did not run. This usually means"          echo "*** that the run-time linker is not finding SDL or finding the wrong"          echo "*** version of SDL. If it is not finding SDL, you'll need to set your"          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"          echo "*** to the installed location  Also, make sure you have run ldconfig if that"          echo "*** is required on your system"	  echo "***"          echo "*** If you have an old version installed, it is best to remove it, although"          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],        [ echo "*** The test program failed to compile or link. See the file config.log for the"          echo "*** exact error that occured. This usually means SDL was incorrectly installed"          echo "*** or that you have moved SDL since it was installed. In the latter case, you"          echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])          CFLAGS="$ac_save_CFLAGS"          LIBS="$ac_save_LIBS"       fi     fi     SDL_CFLAGS=""     SDL_LIBS=""     ifelse([$3], , :, [$3])  fi  AC_SUBST(SDL_CFLAGS)  AC_SUBST(SDL_LIBS)  rm -f conf.sdltest])## libtool.m4 - Configure libtool for the target system. -*-Shell-script-*-## Copyright (C) 1996-1999, 2000 Free Software Foundation, Inc.## Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996#### This program is free software; you can redistribute it and/or modify## it under the terms of the GNU General Public License as published by## the Free Software Foundation; either version 2 of the License, or## (at your option) any later version.#### This program is distributed in the hope that it will be useful, but## WITHOUT ANY WARRANTY; without even the implied warranty of## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU## General Public License for more details.#### You should have received a copy of the GNU General Public License## along with this program; if not, write to the Free Software## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.#### As a special exception to the GNU General Public License, if you## distribute this file as part of a program that contains a## configuration script generated by Autoconf, you may include it under## the same distribution terms that you use for the rest of that program.# serial 40 AC_PROG_LIBTOOLAC_DEFUN(AC_PROG_LIBTOOL,[AC_REQUIRE([AC_LIBTOOL_SETUP])dnl# Save cache, so that ltconfig can load itAC_CACHE_SAVE# Actually configure libtool.  ac_aux_dir is where install-sh is found.CC="$CC" CFLAGS="$CFLAGS" CPPFLAGS="$CPPFLAGS" \LD="$LD" LDFLAGS="$LDFLAGS" LIBS="$LIBS" \LN_S="$LN_S" NM="$NM" RANLIB="$RANLIB" \DLLTOOL="$DLLTOOL" AS="$AS" OBJDUMP="$OBJDUMP" \${CONFIG_SHELL-/bin/sh} $ac_aux_dir/ltconfig --no-reexec \$libtool_flags --no-verify $ac_aux_dir/ltmain.sh $lt_target \|| AC_MSG_ERROR([libtool configure failed])# Reload cache, that may have been modified by ltconfigAC_CACHE_LOAD# This can be used to rebuild libtool when neededLIBTOOL_DEPS="$ac_aux_dir/ltconfig $ac_aux_dir/ltmain.sh"# Always use our own libtool.LIBTOOL='$(SHELL) $(top_builddir)/libtool'AC_SUBST(LIBTOOL)dnl# Redirect the config.log output again, so that the ltconfig log is not# clobbered by the next message.exec 5>>./config.log])AC_DEFUN(AC_LIBTOOL_SETUP,[AC_PREREQ(2.13)dnlAC_REQUIRE([AC_ENABLE_SHARED])dnlAC_REQUIRE([AC_ENABLE_STATIC])dnlAC_REQUIRE([AC_ENABLE_FAST_INSTALL])dnlAC_REQUIRE([AC_CANONICAL_HOST])dnlAC_REQUIRE([AC_CANONICAL_BUILD])dnlAC_REQUIRE([AC_PROG_RANLIB])dnlAC_REQUIRE([AC_PROG_CC])dnlAC_REQUIRE([AC_PROG_LD])dnlAC_REQUIRE([AC_PROG_NM])dnlAC_REQUIRE([AC_PROG_LN_S])dnldnlcase "$target" inNONE) lt_target="$host" ;;*) lt_target="$target" ;;esac# Check for any special flags to pass to ltconfig.libtool_flags="--cache-file=$cache_file"test "$enable_shared" = no && libtool_flags="$libtool_flags --disable-shared"test "$enable_static" = no && libtool_flags="$libtool_flags --disable-static"test "$enable_fast_install" = no && libtool_flags="$libtool_flags --disable-fast-install"test "$ac_cv_prog_gcc" = yes && libtool_flags="$libtool_flags --with-gcc"test "$ac_cv_prog_gnu_ld" = yes && libtool_flags="$libtool_flags --with-gnu-ld"ifdef([AC_PROVIDE_AC_LIBTOOL_DLOPEN],[libtool_flags="$libtool_flags --enable-dlopen"])ifdef([AC_PROVIDE_AC_LIBTOOL_WIN32_DLL],[libtool_flags="$libtool_flags --enable-win32-dll"])AC_ARG_ENABLE(libtool-lock,  [  --disable-libtool-lock  avoid locking (might break parallel builds)])test "x$enable_libtool_lock" = xno && libtool_flags="$libtool_flags --disable-lock"test x"$silent" = xyes && libtool_flags="$libtool_flags --silent"# Some flags need to be propagated to the compiler or linker for good# libtool support.case "$lt_target" in*-*-irix6*)  # Find out which ABI we are using.  echo '[#]line __oline__ "configure"' > conftest.$ac_ext  if AC_TRY_EVAL(ac_compile); then    case "`/usr/bin/file conftest.o`" in    *32-bit*)      LD="${LD-ld} -32"      ;;    *N32*)      LD="${LD-ld} -n32"      ;;    *64-bit*)      LD="${LD-ld} -64"      ;;    esac  fi  rm -rf conftest*  ;;*-*-sco3.2v5*)  # On SCO OpenServer 5, we need -belf to get full-featured binaries.  SAVE_CFLAGS="$CFLAGS"  CFLAGS="$CFLAGS -belf"  AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,    [AC_TRY_LINK([],[],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])])  if test x"$lt_cv_cc_needs_belf" != x"yes"; then    # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf    CFLAGS="$SAVE_CFLAGS"  fi  ;;ifdef([AC_PROVIDE_AC_LIBTOOL_WIN32_DLL],[*-*-cygwin* | *-*-mingw*)  AC_CHECK_TOOL(DLLTOOL, dlltool, false)  AC_CHECK_TOOL(AS, as, false)  AC_CHECK_TOOL(OBJDUMP, objdump, false)  ;;])esac])# AC_LIBTOOL_DLOPEN - enable checks for dlopen support