osrm-backend/cmake/check_luabind.cmake
Daniel J. Hofmann ca0f8ed653 Immensly increase lua/luabind detection and check in buildsystem.
Instead of including the `luabind.hpp` header that transitively includes
basically everything else, we now only include the appropriate header
for luabind's open function.

It is important that this function is declared in the header but the
definition comes from the luabind shared object (library), such that we
can detect linker errors, too.

By only including this header, we also no longer transitively include
the header for the `luaL_newstate` function, with we have to add
manually.

With these changes, detecting, compiling, linking and checking for
lua/luabind with cmake now works instantly, instead of the 3-4
seconds as it was before! Yay, progress!
2015-09-30 18:22:26 +02:00

41 lines
1.6 KiB
CMake

INCLUDE (CheckCXXSourceCompiles)
unset(LUABIND_WORKS CACHE)
unset(LUABIND51_WORKS CACHE)
set (LUABIND_CHECK_SRC "extern \"C\" {\n#include \"lua.h\"\n#include \"lauxlib.h\"\n}\n#include <luabind/open.hpp>\nint main() { lua_State *x = luaL_newstate(); luabind::open(x); }")
set (CMAKE_TRY_COMPILE_CONFIGURATION ${CMAKE_BUILD_TYPE})
set (CMAKE_REQUIRED_INCLUDES "${Boost_INCLUDE_DIR};${LUABIND_INCLUDE_DIR};${LUA_INCLUDE_DIR}")
set (CMAKE_REQUIRED_LIBRARIES "${LUABIND_LIBRARY};${LUA_LIBRARY}")
find_package(Lua52)
if(NOT APPLE)
find_package(LuaJIT 5.2)
endif()
if(LUA52_FOUND)
set (CMAKE_REQUIRED_INCLUDES "${Boost_INCLUDE_DIR};${LUABIND_INCLUDE_DIR};${LUA_INCLUDE_DIR}")
set (CMAKE_REQUIRED_LIBRARIES "${LUABIND_LIBRARY};${LUA_LIBRARY}")
CHECK_CXX_SOURCE_COMPILES("${LUABIND_CHECK_SRC}" LUABIND_WORKS)
endif()
if(LUABIND_WORKS)
message(STATUS "Luabind/Lua5.2 combination working with ${LUA_LIBRARY}")
else()
message(STATUS "Luabind/Lua5.2 not feasible, falling back to Lua 5.1.")
unset(LUA_FOUND CACHE)
unset(LUA_INCLUDE_DIR CACHE)
unset(LUA_LIBRARY CACHE)
find_package(Lua51 REQUIRED)
if(NOT APPLE)
find_package(LuaJIT 5.1)
endif()
set (CMAKE_REQUIRED_INCLUDES "${Boost_INCLUDE_DIR};${LUABIND_INCLUDE_DIR};${LUA_INCLUDE_DIR}")
set (CMAKE_REQUIRED_LIBRARIES "${LUABIND_LIBRARY};${LUA_LIBRARY}")
CHECK_CXX_SOURCE_COMPILES("${LUABIND_CHECK_SRC}" LUABIND51_WORKS)
if(LUABIND51_WORKS)
message(STATUS "Luabind works with Lua 5.1 at ${LUA_LIBRARY}")
else()
message(FATAL_ERROR "Luabind does not work with Lua 5.1 at ${LUA_LIBRARY}, no working Luabind found")
endif()
endif()