Re: [PATCH] Makefile: Improve compressed debug info support detection

[Arvind Sankar]

On Wed, Jun 10, 2020 at 07:30:46PM -0400, Arvind Sankar wrote:
> On Wed, Jun 10, 2020 at 02:27:55PM -0700, Nick Desaulniers wrote:
> 
> No, as-option does invoke the assembler. The problem here is that with
> -Wa, the option is only seen by the assembler, not the gcc driver. So it
> will succeed because the assembler supports it, but it will not test
> whether the gcc driver also supports it.
> 

I think in theory another way to fix it is to just use -Wa even for
CFLAGS, assuming the compiler itself doesn't have to do anything with
the option and it's purely an assembler thing. Then you'd just do the as
and ld tests.