I have modified the Makefile inside llvm/tools/clang and added the following flag:
CPP.Flags += -D_FORTIFY_SOURCE=0
But when I build clang using ‘make’ then I get lot of warnings like:
:0:0: warning: “_FORTIFY_SOURCE” redefined [enabled by default]
:0:0: note: this is the location of the previous definition
Is this expected behaviour?