ss this file with autoconf to produce a configure script.
AC_INIT(main.cpp)

AC_CANONICAL_SYSTEM

dnl Setup for automake
AM_INIT_AUTOMAKE(xlogical, 1.0)

dnl Check for tools

AC_PROG_CXX

dnl Check for SDL
SDL_VERSION=1.1.0
AM_PATH_SDL($SDL_VERSION, :,
	AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!]))
CPPFLAGS="$CPPFLAGS $SDL_CFLAGS"
LIBS="$LIBS $SDL_LIBS"

dnl Checking for SDL_image
AC_CHECK_LIB(SDL_image, main,:,AC_MSG_ERROR([ *** Cannot find SDL_image]))
LIBS="$LIBS -lSDL_image"
dnl Checking for SDL_mixer
AC_CHECK_LIB(SDL_mixer, main,:,AC_MSG_ERROR([ *** Cannot find SDL_mixer]))
LIBS="$LIBS -lSDL_mixer"

CPPFLAGS="$CPPFLAGS $TARGETCPU"

dnl Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADER(sys/time.h, )
AC_CHECK_HEADER(unistd.h, )

dnl Checks for library functions.
AC_CHECK_FUNC(gettimeofday, )
AC_CHECK_FUNC(regcomp, )
AC_CHECK_FUNC(strdup, )
AC_CHECK_FUNC(strerror, )
AC_CHECK_FUNC(strtod, )
AC_CHECK_FUNC(strtol,)

AC_OUTPUT(Makefile images/Makefile music/Makefile sound/Makefile)