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# SYNOPSIS
#
# AX_CHECK_LIBSDL(required_version)
#
# DESCRIPTION
#
# Check whether the system has libSDL version required_version.
#
# LAST MODIFICATION
#
# 2007-11-08
#
# COPYLEFT
#
# Copyright (c) 2007 Nicolas Calimet
#
# Copying and distribution of this file, with or without
# modification, are permitted in any medium without royalty provided
# the copyright notice and this notice are preserved.
AC_DEFUN([AX_CHECK_LIBSDL],
[
AC_CHECK_PROGS([SDLCONFIG], [sdl-config])
AC_MSG_CHECKING([for libSDL])
ax_check_libsdl=`sdl-config 2>&1 | grep -v Usage`
if test x"$ax_check_libsdl" != x""; then
ax_check_libsdl="not found"
AC_MSG_RESULT([$ax_check_libsdl])
else
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([for libSDL version >= $1])
ax_check_libsdl_version=`sdl-config --version 2> /dev/null`
if test x"$ax_check_libsdl_version" != x""; then
AX_COMPARE_VERSION([$ax_check_libsdl_version], [ge], [$1], [ax_check_libsdl="ok"], [ax_check_libsdl="bad"])
AC_MSG_RESULT([$ax_check_libsdl_version, $ax_check_libsdl])
else
ax_check_libsdl="unknown"
AC_MSG_RESULT([$ax_check_libsdl])
fi
if test x"$ax_check_libsdl" = x"ok"; then
ax_check_libsdl_cflags=`sdl-config --cflags 2> /dev/null`
ax_check_libsdl_libs=`sdl-config --libs 2> /dev/null`
ax_check_libsdl_save_cppflags="$CPPFLAGS"
ax_check_libsdl_save_libs="$LIBS"
CPPFLAGS="$ax_check_libsdl_cflags $CPPFLAGS"
LIBS="$ax_check_libsdl_libs $LIBS"
# check include file
AC_CHECK_HEADER(
[SDL/SDL.h],
[AC_CHECK_LIB([SDL], [SDL_Quit], [], [ax_check_libsdl="not found"])],
[ax_check_libsdl="no headers"]
)
fi
if test x"$ax_check_libsdl" != x"ok"; then
CPPFLAGS="$ax_check_libsdl_save_cppflags"
LIBS="$ax_check_libsdl_save_libs"
fi
fi
])
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