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# - Find lua
# this module looks for Lua
#
# LUA_EXECUTABLE - the full path to lua
# LUA_LIBRARIES - the lua shared library
# LUA_INCLUDE_DIR - directory for lua includes
# LUA_PACKAGE_PATH - where Lua searches for Lua packages
# LUA_PACKAGE_CPATH - where Lua searches for library packages
# LUA_FOUND - If false, don't attempt to use lua.
INCLUDE(CheckLibraryExists)
IF(LUA) # if we are using luarocks
MESSAGE(STATUS "Lua: using information from luarocks")
SET(LUA_EXECUTABLE "${LUA}")
SET(LUA_INCLUDE_DIR "${LUA_INCDIR}")
SET(LUA_PACKAGE_PATH "${LUADIR}")
SET(LUA_PACKAGE_CPATH "${LIBDIR}")
IF(LUALIB) # present on windows platforms only
SET(LUA_LIBRARIES "${LUALIB}")
ELSE() # too bad, luarocks does not provide it (pfff...)
GET_FILENAME_COMPONENT(LUA_EXEC_NAME ${LUA_EXECUTABLE} NAME_WE)
IF(LUA_EXEC_NAME STREQUAL "luajit")
FIND_LIBRARY(LUA_LIBRARIES
NAMES luajit libluajit
PATHS ${LUA_LIBDIR}
NO_DEFAULT_PATH)
ELSEIF(LUA_EXEC_NAME STREQUAL "lua")
FIND_LIBRARY(LUA_LIBRARIES
NAMES lua liblua
PATHS ${LUA_LIBDIR}
NO_DEFAULT_PATH)
ELSE()
MESSAGE(FATAL_ERROR "You seem to have a non-standard lua installation -- are you using luajit-rocks?")
ENDIF()
MESSAGE(STATUS "Lua library guess (no info from luarocks): ${LUA_LIBRARIES}")
ENDIF()
ELSE() # standalone -- not using luarocks
IF(WITH_LUA51)
FIND_PROGRAM(LUA_EXECUTABLE
NAMES
lua51
lua5.1
lua
PATH)
ELSE()
FIND_PROGRAM(LUA_EXECUTABLE
NAMES
luajit
PATH)
ENDIF()
MESSAGE(STATUS "Lua executable: ${LUA_EXECUTABLE}")
IF(LUA_EXECUTABLE)
GET_FILENAME_COMPONENT(LUA_DIR ${LUA_EXECUTABLE} PATH)
ENDIF(LUA_EXECUTABLE)
IF(WITH_LUA51)
FIND_LIBRARY(LUA_LIBRARIES
NAMES lua liblua lua-5.1 liblua-5.1 libluajit-5.1
PATHS ${LUA_DIR}/../lib
${LUA_DIR}
NO_DEFAULT_PATH)
ELSE()
FIND_LIBRARY(LUA_LIBRARIES
NAMES luajit libluajit luajit-5.1 libluajit-5.1
PATHS ${LUA_DIR}/../lib
${LUA_DIR}
NO_DEFAULT_PATH)
ENDIF()
MESSAGE(STATUS "Lua library: ${LUA_LIBRARIES}")
FIND_PATH(LUA_INCLUDE_DIR lua.h
${LUA_DIR}/../include/lua-5.1
${LUA_DIR}/../include/lua51
${LUA_DIR}/../include/lua
${LUA_DIR}/../include
NO_DEFAULT_PATH)
MESSAGE(STATUS "Lua include directory: ${LUA_INCLUDE_DIR}")
ENDIF()
IF(LUA_LIBRARIES)
CHECK_LIBRARY_EXISTS(${LUA_LIBRARIES} luaJIT_setmode "" LUA_JIT)
ENDIF()
MARK_AS_ADVANCED(
LUA_EXECUTABLE
LUA_LIBRARIES
LUA_INCLUDE_DIR
LUA_PACKAGE_PATH
LUA_PACKAGE_CPATH
)
IF(LUA_EXECUTABLE)
IF(LUA_LIBRARIES)
IF(LUA_INCLUDE_DIR)
SET(LUA_FOUND 1)
ENDIF(LUA_INCLUDE_DIR)
ENDIF(LUA_LIBRARIES)
ENDIF(LUA_EXECUTABLE)
IF (NOT LUA_FOUND AND Lua_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find Lua")
ENDIF (NOT LUA_FOUND AND Lua_FIND_REQUIRED)
IF(NOT Lua_FIND_QUIETLY)
IF(LUA_FOUND)
MESSAGE(STATUS "Lua found ${LUA_EXECUTABLE}")
ELSE(LUA_FOUND)
MESSAGE(STATUS "Lua not found. Please specify location")
ENDIF(LUA_FOUND)
ENDIF(NOT Lua_FIND_QUIETLY)
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