Error: make variable 'LLVM_IAS' value invalid '0'
One example of the error: https://github.com/ClangBuiltLinux/continuous-integration2/actions/runs/1122083108
As of commit f12b034afeb3 ("scripts/Makefile.clang: default to LLVM_IAS=1") in -next, LLVM_IAS=0 is valid for disabling the integrated assembler. Please allow us to specify both LLVM_IAS=0 and LLVM_IAS=1 through make_variables.