What are the source files for a given Kconfig symbol?

I'm writing scripts to get source code files for a given Kconfig symbol such as ALX. I'm expecting something like: ./scripts/Kconfig-files.pl ALX drivers/net/ethernet/atheros/alx/alx.h drivers/net/ethernet/atheros/alx/main.c drivers/net/ethernet/atheros/alx/ethtool.c drivers/net/ethernet/atheros/alx/hw.h drivers/net/ethernet/atheros/alx/hw.c drivers/net/ethernet/atheros/alx/reg.h Is there a standard way of doing that? The scripts I'm working on uses Makefile contents and look for #include "" on the source code. -- Peter