Add hot reload support when building with GCC and CMake

Author: ytnuf

Diff for: CMakeLists.txt

@@ -126,6 +126,9 @@ endif()
 
 if (GODOT_ENABLE_HOT_RELOAD)
     set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -D HOT_RELOAD_ENABLED")
+	if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
+		set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -fno-gnu-unique")
+	endif()
 endif()
 
 # Generate source from the bindings file