# Locate Lua library
# This module defines
#  LUA51_FOUND, if false, do not try to link to Lua
#  LUA_LIBRARIES
#  LUA_INCLUDE_DIR, where to find lua.h
#
# Note that the expected include convention is
#  #include "lua.h"
# and not
#  #include <lua/lua.h>
# This is because, the lua location is not standardized and may exist
# in locations other than lua/

#=============================================================================
# Copyright 2007-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
#  License text for the above reference.)

FIND_PATH(LUA_INCLUDE_DIR NAMES lua.h PATH_SUFFIXES lua51 lua5.1)
FIND_LIBRARY(LUA_LIBRARY NAMES liblua51.a liblua5.1.a liblua-5.1.a liblua.a lua51 lua5.1 lua-5.1 lua)

IF(LUA_LIBRARY)
  # include the math library for Unix
  IF(UNIX AND NOT APPLE)
    FIND_LIBRARY(LUA_MATH_LIBRARY m)
    SET( LUA_LIBRARIES "${LUA_LIBRARY};${LUA_MATH_LIBRARY}" CACHE STRING "Lua Libraries")
  # For Windows and Mac, don't need to explicitly include the math library
  ELSE(UNIX AND NOT APPLE)
    SET( LUA_LIBRARIES "${LUA_LIBRARY}" CACHE STRING "Lua Libraries")
  ENDIF(UNIX AND NOT APPLE)
ENDIF(LUA_LIBRARY)

INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Lua51 DEFAULT_MSG  LUA_LIBRARIES LUA_INCLUDE_DIR)
MARK_AS_ADVANCED(LUA_INCLUDE_DIR LUA_LIBRARIES LUA_LIBRARY LUA_MATH_LIBRARY)