Warning, not error when Sfx Preprocessor can't find a macro.

Author: rvkennedy

Applications/GuiSample/CMakeLists.txt

@@ -17,3 +17,4 @@ endif()
 if(PLATFORM_SUPPORT_VULKAN)
 	target_link_libraries(GuiSample${STATIC_LINK_SUFFIX} SimulVulkan${STATIC_LINK_SUFFIX} ${Vulkan_LIBRARY} )
 endif()
+

Applications/Sfx/Preprocessor.ypp

@@ -80,7 +80,7 @@
 		if(!m)
 		{
 			string str=string("Macro ")+id+string(" not defined");
-			prepro_error(str.c_str());
+			prepro_warning(str.c_str());
 			return false;
 		}
 		int value=1;