CMakeLists.txt: Lua5.2 support.

CMakeLists.txt

@@ -109,12 +109,15 @@ find_package( Threads REQUIRED )
 target_link_libraries (osrm-extract ${Threads_LIBRARY})
 
 find_package( LuaJIT )
-IF( NOT APPLE AND LUAJIT_INCLUDE_DIR AND LUAJIT_LIBRARIES)
+IF( NOT APPLE AND LUAJIT_INCLUDE_DIR AND LUAJIT_LIBRARIES )
 	include_directories(${LUAJIT_INCLUDE_DIR})
 	target_link_libraries( osrm-extract ${LUAJIT_LIBRARIES} )
 	target_link_libraries( osrm-prepare ${LUAJIT_LIBRARIES} )
-ELSE( LUAJIT_INCLUDE_DIR )
-	find_package( Lua51 REQUIRED AND LUAJIT_LIBRARIES )
+ELSE( NOT APPLE AND LUAJIT_INCLUDE_DIR AND LUAJIT_LIBRARIES )
+	find_package( Lua52 )
+	IF ( NOT LUA52_FOUND )
+		find_package( Lua51 REQUIRED AND LUAJIT_LIBRARIES )
+	ENDIF ( NOT LUA52_FOUND )
 	include_directories(${LUA_INCLUDE_DIR})
 	target_link_libraries( osrm-extract ${LUA_LIBRARY} )
 	target_link_libraries( osrm-prepare ${LUA_LIBRARY} )

cmake/FindLua52.cmake

@@ -0,0 +1,82 @@
+# Locate Lua library
+# This module defines
+#  LUA52_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/
+
+#=============================================================================
+# Copyright 2007-2009 Kitware, Inc.
+# Copyright 2013 for Project-OSRM, Lua5.1 => Lua5.2
+#
+# 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 lua.h
+  HINTS
+    ENV LUA_DIR
+  PATH_SUFFIXES include/lua52 include/lua5.2 include/lua-5.2 include/lua include
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /sw # Fink
+  /opt/local # DarwinPorts
+  /opt/csw # Blastwave
+  /opt
+)
+
+find_library(LUA_LIBRARY
+  NAMES lua52 lua5.2 lua-5.2 lua
+  HINTS
+    ENV LUA_DIR
+  PATH_SUFFIXES lib
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /sw
+  /opt/local
+  /opt/csw
+  /opt
+)
+
+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}" 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(FindPackageHandleStandardArgs)
+# handle the QUIETLY and REQUIRED arguments and set LUA_FOUND to TRUE if
+# all listed variables are TRUE
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(Lua52
+                                  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)
+