# Distributed under the OSI-approved BSD 3-Clause License. See accompanying # file Copyright.txt or https://cmake.org/licensing for details. #.rst: # FindLua # ------- # # # # Locate Lua library. This module defines # # :: # # LUA_FOUND - if false, do not try to link to Lua # LUA_LIBRARIES - both lua and lualib # LUA_INCLUDE_DIR - where to find lua.h # LUA_LIBRARY_DIR - Dir(s) where Lua libraries are found # LUA_VERSION_STRING - the version of Lua found # LUA_VERSION_MAJOR - the major version of Lua # LUA_VERSION_MINOR - the minor version of Lua # LUA_VERSION_PATCH - the patch version of Lua # # # # Note that the expected include convention is # # :: # # #include "lua.h" # # and not # # :: # # #include # # This is because, the lua location is not standardized and may exist in # locations other than lua/ unset(_lua_include_subdirs) unset(_lua_append_versions) unset(_lua_library_names) include(${CMAKE_CURRENT_LIST_DIR}/FindLua/set_version_vars.cmake) include(${CMAKE_CURRENT_LIST_DIR}/FindLua/version_check.cmake) # # this is a function only to have all the variables inside go away automatically # function(_lua_set_version_vars) # set(LUA_VERSIONS5 5.3 5.2 5.1 5.0) # if (Lua_FIND_VERSION_EXACT) # if (Lua_FIND_VERSION_COUNT GREATER 1) # set(_lua_append_versions ${Lua_FIND_VERSION_MAJOR}.${Lua_FIND_VERSION_MINOR}) # endif () # elseif (Lua_FIND_VERSION) # # once there is a different major version supported this should become a loop # if (NOT Lua_FIND_VERSION_MAJOR GREATER 5) # if (Lua_FIND_VERSION_COUNT EQUAL 1) # set(_lua_append_versions ${LUA_VERSIONS5}) # else () # foreach (subver IN LISTS LUA_VERSIONS5) # if (NOT subver VERSION_LESS ${Lua_FIND_VERSION}) # list(APPEND _lua_append_versions ${subver}) # endif () # endforeach () # endif () # endif () # else () # # once there is a different major version supported this should become a loop # set(_lua_append_versions ${LUA_VERSIONS5}) # endif () # list(APPEND _lua_include_subdirs "include/lua" "include") # foreach (ver IN LISTS _lua_append_versions) # string(REGEX MATCH "^([0-9]+)\\.([0-9]+)$" _ver "${ver}") # list(APPEND _lua_include_subdirs # include/lua${CMAKE_MATCH_1}${CMAKE_MATCH_2} # include/lua${CMAKE_MATCH_1}.${CMAKE_MATCH_2} # include/lua-${CMAKE_MATCH_1}.${CMAKE_MATCH_2} # ) # list(APPEND _lua_library_names # lua${CMAKE_MATCH_1}${CMAKE_MATCH_2} # lua${CMAKE_MATCH_1}.${CMAKE_MATCH_2} # lua.${CMAKE_MATCH_1}.${CMAKE_MATCH_2} # lua-${CMAKE_MATCH_1}.${CMAKE_MATCH_2} # ) # endforeach () # set(_lua_include_subdirs "${_lua_include_subdirs}" PARENT_SCOPE) # set(_lua_append_versions "${_lua_append_versions}" PARENT_SCOPE) # endfunction(_lua_set_version_vars) # function(_lua_check_header_version _hdr_file) # # At least 5.[012] have different ways to express the version # # so all of them need to be tested. Lua 5.2 defines LUA_VERSION # # and LUA_RELEASE as joined by the C preprocessor, so avoid those. # file(STRINGS "${_hdr_file}" lua_version_strings # REGEX "^#define[ \t]+LUA_(RELEASE[ \t]+\"Lua [0-9]|VERSION([ \t]+\"Lua [0-9]|_[MR])).*") # string(REGEX REPLACE ".*;#define[ \t]+LUA_VERSION_MAJOR[ \t]+\"([0-9])\"[ \t]*;.*" "\\1" LUA_VERSION_MAJOR ";${lua_version_strings};") # if (LUA_VERSION_MAJOR MATCHES "^[0-9]+$") # string(REGEX REPLACE ".*;#define[ \t]+LUA_VERSION_MINOR[ \t]+\"([0-9])\"[ \t]*;.*" "\\1" LUA_VERSION_MINOR ";${lua_version_strings};") # string(REGEX REPLACE ".*;#define[ \t]+LUA_VERSION_RELEASE[ \t]+\"([0-9])\"[ \t]*;.*" "\\1" LUA_VERSION_PATCH ";${lua_version_strings};") # set(LUA_VERSION_STRING "${LUA_VERSION_MAJOR}.${LUA_VERSION_MINOR}.${LUA_VERSION_PATCH}") # else () # string(REGEX REPLACE ".*;#define[ \t]+LUA_RELEASE[ \t]+\"Lua ([0-9.]+)\"[ \t]*;.*" "\\1" LUA_VERSION_STRING ";${lua_version_strings};") # if (NOT LUA_VERSION_STRING MATCHES "^[0-9.]+$") # string(REGEX REPLACE ".*;#define[ \t]+LUA_VERSION[ \t]+\"Lua ([0-9.]+)\"[ \t]*;.*" "\\1" LUA_VERSION_STRING ";${lua_version_strings};") # endif () # string(REGEX REPLACE "^([0-9]+)\\.[0-9.]*$" "\\1" LUA_VERSION_MAJOR "${LUA_VERSION_STRING}") # string(REGEX REPLACE "^[0-9]+\\.([0-9]+)[0-9.]*$" "\\1" LUA_VERSION_MINOR "${LUA_VERSION_STRING}") # string(REGEX REPLACE "^[0-9]+\\.[0-9]+\\.([0-9]).*" "\\1" LUA_VERSION_PATCH "${LUA_VERSION_STRING}") # endif () # foreach (ver IN LISTS _lua_append_versions) # if (ver STREQUAL "${LUA_VERSION_MAJOR}.${LUA_VERSION_MINOR}") # set(LUA_VERSION_MAJOR ${LUA_VERSION_MAJOR} PARENT_SCOPE) # set(LUA_VERSION_MINOR ${LUA_VERSION_MINOR} PARENT_SCOPE) # set(LUA_VERSION_PATCH ${LUA_VERSION_PATCH} PARENT_SCOPE) # set(LUA_VERSION_STRING ${LUA_VERSION_STRING} PARENT_SCOPE) # return() # endif () # endforeach () # endfunction(_lua_check_header_version) _lua_set_version_vars(lua "") find_path(LUA_INCLUDE_DIR lua.h HINTS ENV LUA_DIR PATH_SUFFIXES ${_lua_include_subdirs} include PATHS ${LUA_DIR} ~/Library/Frameworks /Library/Frameworks /sw # Fink /opt/local # DarwinPorts /opt/csw # Blastwave /opt /usr /usr/local # Homebrew ) if (LUA_INCLUDE_DIR AND EXISTS "${LUA_INCLUDE_DIR}/lua.h") _lua_check_header_version("${LUA_INCLUDE_DIR}/lua.h" "LUA") endif () if (NOT LUA_VERSION_STRING) foreach (subdir IN LISTS _lua_include_subdirs) unset(LUA_INCLUDE_PREFIX CACHE) find_path(LUA_INCLUDE_PREFIX ${subdir}/lua.h HINTS ENV LUA_DIR PATHS ${LUA_DIR} ~/Library/Frameworks /Library/Frameworks /sw # Fink /opt/local # DarwinPorts /opt/csw # Blastwave /opt /usr /usr/local ) if (LUA_INCLUDE_PREFIX) _lua_check_header_version("${LUA_INCLUDE_PREFIX}/${subdir}/lua.h") if (LUA_VERSION_STRING) set(LUA_INCLUDE_DIR "${LUA_INCLUDE_PREFIX}/${subdir}") break() endif () endif () endforeach () endif () unset(_lua_include_subdirs) unset(_lua_append_versions) find_library(LUA_LIBRARY NAMES ${_lua_library_names} lua HINTS ENV LUA_DIR PATH_SUFFIXES lib bin PATHS ${LUA_DIR} ~/Library/Frameworks /Library/Frameworks /sw /opt/local /opt/csw /opt /usr /usr/local # From the include_dir ${LUA_INCLUDE_DIR}/../lib ) unset(_lua_library_names) if (LUA_LIBRARY) # include the math library for Unix if (UNIX AND NOT APPLE AND NOT BEOS) find_library(LUA_MATH_LIBRARY m) set(LUA_LIBRARIES "${LUA_LIBRARY};${LUA_MATH_LIBRARY}") # include dl library for statically-linked Lua library get_filename_component(LUA_LIB_EXT ${LUA_LIBRARY} EXT) if (LUA_LIB_EXT STREQUAL CMAKE_STATIC_LIBRARY_SUFFIX) list(APPEND LUA_LIBRARIES ${CMAKE_DL_LIBS}) endif () # For Windows and Mac, don't need to explicitly include the math library else () set(LUA_LIBRARIES "${LUA_LIBRARY}") endif () set(LUA_LIBRARY_DIR ) foreach (lib ${LUA_LIBRARIES}) get_filename_component(lib_dir ${lib} DIRECTORY CACHE) list(APPEND LUA_LIBRARY_DIR ${lib_dir}) endforeach () list(REMOVE_DUPLICATES LUA_LIBRARY_DIR) endif () include(FindPackageHandleStandardArgs) # handle the QUIETLY and REQUIRED arguments and set LUA_FOUND to TRUE if # all listed variables are TRUE FIND_PACKAGE_HANDLE_STANDARD_ARGS(Lua FOUND_VAR Lua_FOUND REQUIRED_VARS LUA_LIBRARIES LUA_LIBRARY_DIR LUA_INCLUDE_DIR VERSION_VAR LUA_VERSION_STRING) mark_as_advanced(LUA_INCLUDE_DIR LUA_LIBRARY LUA_LIBRARY_DIR LUA_MATH_LIBRARY)