dnl Process this file with autoconf to produce a configure script.

 AC_INIT(README)

 dnl Setup for automake

 SDL_VERSION=1.2.7

 dnl Detect the canonical host and target build environment

 AC_CANONICAL_SYSTEM

 dnl Setup for automake

 AM_INIT_AUTOMAKE(SDL_tests, $SDL_VERSION)

 dnl Check for tools

 AC_PROG_CC

 dnl Check for compiler environment

 AC_C_CONST

 dnl Figure out which math library to use

 case "$target" in

     *-*-cygwin* | *-*-mingw32*)

         MATHLIB=""

         SYS_GL_LIBS="-lopengl32"

         ;;

     *-*-beos*)

         MATHLIB=""

         SYS_GL_LIBS="-lGL"

         ;;

     *-*-darwin*)

         MATHLIB=""

         SYS_GL_LIBS=""

         ;;

     *-*-aix*)

         if test x$ac_cv_prog_gcc = xyes; then

             CFLAGS="-mthreads"

         fi

         SYS_GL_LIBS=""

         ;;

     *-*-mint*)

         MATHLIB="-lm"

         SYS_GL_LIBS="-lOSMesa"

         ;;

     *)

         MATHLIB="-lm"

         AC_PATH_X

         AC_PATH_XTRA

         if test x$have_x = xyes; then

             CFLAGS="$CFLAGS $X_CFLAGS"

             SYS_GL_LIBS="$X_LIBS -lGL"

         else

             SYS_GL_LIBS="-lGL"

         fi

         ;;

 esac

 AC_SUBST(MATHLIB)

 dnl Check for SDL

 AM_PATH_SDL($SDL_VERSION,

             :,

 	    AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!])

 )

 CFLAGS="$CFLAGS $SDL_CFLAGS"

 LIBS="$LIBS $SDL_LIBS"

 dnl Check for OpenGL

 AC_MSG_CHECKING(for OpenGL support)

 have_opengl=no

 AC_TRY_COMPILE([

  #include "SDL_opengl.h"

 ],[

 ],[

 have_opengl=yes

 ])

 AC_MSG_RESULT($have_opengl)

 if test x$have_opengl = xyes; then

     CFLAGS="$CFLAGS -DHAVE_OPENGL"

     GL_LIBS="$SYS_GL_LIBS"

 else

     GL_LIBS=""

 fi

 AC_SUBST(GL_LIBS)

 # Finally create all the generated files

 AC_OUTPUT([Makefile])