On Thu, Apr 17, 2014 at 12:39 PM, Konstantin Vladimirov
<konstantin.vladimi...@gmail.com> wrote:
> Hi,
>
> I want to support, say arch1 and arch2 in custom gcc in the way
>
> gcc -march1 test.c
>
> calls
>
> ${INSTALL}/libexec/gcc/arch1/4.8.2/cc1
>
> and
>
> gcc -march2 test.c
>
> calls
>
> ${INSTALL}/libexec/gcc/arch2/4.8.2/cc1
>
> Are there any way to do it? Maybe not exactly as I outlined, but the
> whole idea is clear, I think. I looked through multilib and multiarch
> options, but it seems to be nothing like this.
>
> I may correct anything in build system and arch1 and arch2 backends,
> but I don't want to change any core gcc code, say inside gcc.c. Is it
> possible? Are there examples how is it possible?

Only via -B.  We used to have -V to select between different versions
(that was removed), a similar switch to select between different
target triplets could in theory be added.

But note that the driver needs to understand a (subset) of target specific
options for specs processing so even the driver is somewhat target
specific and cannot really be shared.

Richard.

> ---
> With best regards, Konstantin

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