make sure lua works with macos packages

components/CMakeLists.txt

@@ -1,5 +1,10 @@
 project (Components)
 
+if(APPLE)
+    set(BUNDLE_RESOURCES_DIR "${APP_BUNDLE_DIR}/Contents/Resources")
+    set(OPENMW_RESOURCES_ROOT ${BUNDLE_RESOURCES_DIR})
+endif(APPLE)
+
 # Version file
 set (VERSION_IN_FILE "${OpenMW_SOURCE_DIR}/files/version.in")
 set (VERSION_FILE_PATH_BASE "${OpenMW_BINARY_DIR}")

files/lua_api/CMakeLists.txt

@@ -1,3 +1,7 @@
+if (NOT DEFINED OPENMW_RESOURCES_ROOT)
+    return()
+endif()
+
 set(LUA_API_FILES
     README.md
     coroutine.doclua
@@ -18,5 +22,5 @@ set(LUA_API_FILES
 )
 
 foreach (f ${LUA_API_FILES})
-    copy_resource_file("${CMAKE_CURRENT_SOURCE_DIR}/${f}" "${OpenMW_BINARY_DIR}" "resources/lua_api/${f}")
+    copy_resource_file("${CMAKE_CURRENT_SOURCE_DIR}/${f}" "${OPENMW_RESOURCES_ROOT}" "resources/lua_api/${f}")
 endforeach (f)