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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindLua51
---------
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
LUA_VERSION_STRING, the version of Lua found (since CMake 2.8.8)
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/
#]=======================================================================]
find_path(LUA_INCLUDE_DIR lua.h
HINTS
ENV LUA_DIR
PATH_SUFFIXES include/lua51 include/lua5.1 include/lua-5.1 include/lua include
PATHS
~/Library/Frameworks
/Library/Frameworks
/opt
)
find_library(LUA_LIBRARY
NAMES lua51 lua5.1 lua-5.1 lua
HINTS
ENV LUA_DIR
PATH_SUFFIXES lib
PATHS
~/Library/Frameworks
/Library/Frameworks
/opt
)
if(LUA_LIBRARY)
# include the math library for Unix
if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU)
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()
set( LUA_LIBRARIES "${LUA_LIBRARY}" CACHE STRING "Lua Libraries")
endif()
endif()
if(LUA_INCLUDE_DIR AND EXISTS "${LUA_INCLUDE_DIR}/lua.h")
file(STRINGS "${LUA_INCLUDE_DIR}/lua.h" lua_version_str REGEX "^#define[ \t]+LUA_RELEASE[ \t]+\"Lua .+\"")
string(REGEX REPLACE "^#define[ \t]+LUA_RELEASE[ \t]+\"Lua ([^\"]+)\".*" "\\1" LUA_VERSION_STRING "${lua_version_str}")
unset(lua_version_str)
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
# handle the QUIETLY and REQUIRED arguments and set LUA_FOUND to TRUE if
# all listed variables are TRUE
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Lua51
REQUIRED_VARS LUA_LIBRARIES LUA_INCLUDE_DIR
VERSION_VAR LUA_VERSION_STRING)
mark_as_advanced(LUA_INCLUDE_DIR LUA_LIBRARIES LUA_LIBRARY LUA_MATH_LIBRARY)
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