On Wed, Jun 16, 2021 at 04:02:52PM +0800, Lecopzer Chen wrote: > Yes, We can imitate how CLANG_VERSION was implemented in Kconfig. > > Accroding to GNU make release page[1], I've only tested for 3.81, > 4.2 and 4.3. > 4.2 was released in 2016, I think it's fine for LTO lowest version. Okay, sounds good. Are you able to build a patch for this? Thanks for figuring it out! -- Kees Cook