[PATCH 4/9] [waf] Fix assembling when compiling with Clang/LLVM

[Sebastian Huber]

On 10/04/2020 12:39, Hesham Almatary wrote:

> Currently waf_lib only knows about nasm and gas, and automatically
> sets the required flags for those. When building with Clang/LLVM
> it gets confused about the assembler and fails to add the appropriate
> flags.
>
> This commit adds such needed flags to be able to handle assembling
> .S files with Clang/LLVM, as expected by waf_lib asm tool.
It is really great that you figured out how this works.