On Tue, 2012-09-04 at 23:55 +0100, Richard Sandiford wrote:
> If we do that, then your DRIVER_SELF_SPECS can further have:
>
> MIPS_ISA_SYNCI_SPEC
>
> where the definition:
>
> /* Infer a -msynci setting from a -mips argument, on the assumption that
> -msynci is desired where possible. */
> #define MIPS_ISA_SYNCI_SPEC \
> "%{msynci|mno-synci:;%{mips32r2|mips64r2:-msynci:-mno-synci}}"
>
> can go in mips.h. OPTION_DEFAULT_SPECS would then handle synci in just
> the same way as the other options, without the special SYNCI_SPEC macro.
I am having trouble with this part. The newly built compiler is choking
on this config spec when building libgcc and I am not sure how to read
it.
I tried looking in gcc/doc to find a description of the spec syntax but
I couldn't find where it was documented. I don't know what the
semicolon does and I have never seen a 3 part spec like
%{mips32r2|mips64r2:-msynci:-mno-synci}
Is this an 'if-then-else' usage? I have only ever seen two part usages
like:
%{mips32r2|mips64r2:-msynci}
Steve Ellcey
sell...@mips.com
