AC_INIT(configure.in)

dnl Should probably try non-GNU tools...
AC_PATH_PROGS(MAKE, make gmake, make)
AC_PATH_PROG(NASM, nasm, nasm)
AC_PATH_PROG(MKDIR, mkdir, mkdir)
AC_PATH_PROG(RMDIR, rmdir, rmdir)
AC_PATH_PROG(RM, rm, rm)
AC_PATH_PROGS(INSTALL, install ginstall, install)
AC_PATH_PROG(CHMOD, chmod, chmod)

AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE(tmw, 0.8.0)

AC_LANG_CPLUSPLUS
AC_PROG_CXX
AM_PROG_LIBTOOL

dnl FIND_PATH(programm-name, variable-name, list of directories,
dnl     if-not-found, test-parameter)
AC_DEFUN(FIND_PATH,
[
   AC_MSG_CHECKING([for $1])
   if test -n "$$2"; then
        cv_path="$$2";
   else
        cache=`echo $1 | sed 'y%./+-%__p_%'`

        AC_CACHE_VAL(cv_path_cache,
        [
        cv_path="NONE"
        dirs="$3"
        save_IFS=$IFS
        IFS=':'
        for dir in $PATH; do
          dirs="$dirs $dir"
        done
        IFS=$save_IFS

        for dir in $dirs; do
          if test -x "$dir/$1"; then
            if test -n "$5"
            then
              evalstr="$dir/$1 $5 2>&1 "
              if eval $evalstr; then
                cv_path="$dir/$1"
                break
              fi
            else
                cv_path="$dir/$1"
                break
            fi
          fi
        done

        eval "cv_path_$cache=$cv_path"

        ])

      eval "cv_path=\"`echo '$cv_path_'$cache`\""

   fi

   if test -z "$cv_path" || test "$cv_path" = NONE; then
      AC_MSG_RESULT(not found)
      $4
   else
      AC_MSG_RESULT($cv_path)
      $2=$cv_path

   fi
])

# Check for SDL_image and SDL_mixer library
AC_CHECK_LIB(SDL_image, IMG_LoadPNG_RW, , 
AC_MSG_ERROR([ *** Unable to find SDL_image library with PNG support 
(http://www.libsdl.org/projects/SDL_image/)]))
AC_CHECK_LIB(SDL_mixer, Mix_OpenAudio, , 
AC_MSG_ERROR([ *** Unable to find SDL_mixer library 
(http://www.libsdl.org/projects/SDL_mixer/)]))

FIND_PATH(sdl-config, LIBSDL_CONFIG, [${prefix}/bin ${exec_prefix}/bin /usr/local/bin /opt/local/bin], [
  AC_MSG_ERROR([Could not find libsdl anywhere, check http://www.sdl.org])
])

if test -n "$LIBSDL_CONFIG"; then
  LIBSDL_LIBS="`$LIBSDL_CONFIG --libs` -lSDL_image -lSDL_mixer"
  LIBSDL_RPATH=
  for args in $LIBSDL_LIBS; do
       case $args in
         -L*)
            LIBSDL_RPATH="$LIBSDL_RPATH $args"
            ;;
       esac
  done
  LIBSDL_RPATH=`echo $LIBSDL_RPATH | sed -e "s/-L/-R/g"`
  LIBSDL_CFLAGS="`$LIBSDL_CONFIG --cflags`"

  AC_DEFINE_UNQUOTED(HAVE_LIBSDL, 1, [Defines if your system has the LIBSDL library])
else
  AC_DEFINE_UNQUOTED(HAVE_LIBSDL, 0, [Defines if your system has the LIBSDL library])
fi

AC_SUBST(LIBSDL_LIBS)
AC_SUBST(LIBSDL_CFLAGS)
AC_SUBST(LIBSDL_RPATH)

AC_OUTPUT(Makefile src/Makefile)