Re: [Xen-devel] [PATCH v3 1/5] build: filter out command line assembler arguments

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

Roger Pau Monne writes ("[PATCH v3 1/5] build: filter out command line 
assembler arguments"):
> If the assembler is not used. This happens when using cc -E or cc -S
> for example. GCC will just ignore the -Wa,... when the assembler is
> not called, but clang will complain loudly and fail.
...
>  asm-offsets.s: $(TARGET_SUBARCH)/asm-offsets.c
> -     $(CC) $(filter-out -flto,$(CFLAGS)) -S -o $@ $<
> +     $(CC) $(filter-out -Wa% -flto,$(CFLAGS)) -S -o $@ $<

-Wa% matches -Wall.

You probably meant -Wa,%

Ian.

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