231f58903b
Currently, clang does not support the -Wno-nonnull-compare and -Wmaybe-uninitialized warning flags so this adds lots of unknown warning flag output for each compile job when not using GCC. This commit adds a makefile macro to check for supported warning flags and only adds them if the compiler actually supports them.
This directory contains source modules that are composed of software originating from external to the lk project.