[PATCH] Trivial patch to allow bootstrap on MacOS

[Keller, Rainer]

Dear Iain,
thanks for the quick reply. I wasn’t aware of the ticket 79885.

Yes, the intent is to use the same sysroot for build & run.

Hmm, the —with-sysroot is from gcc/configure option — not from the main configure.
Not wanting to turn this into a bug-report, but… using —with-sysroot instead of —with-build-sysroot failed, too.

Let’s keep track of this in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92719
I am happy to provide more info.

Thanks again for Your help,
Rainer


> On 28. Nov 2019, at 16:34, Iain Sandoe <idsandoe@googlemail.com> wrote:
> 
> Hello again Rainer,
> 
> Iain Sandoe <idsandoe@googlemail.com> wrote:
> 
>>> GMP however is installed elsewhere (by Homebrew, MacPorts etc), so ignore any -nostdinc
>> 
>> it also works to symlink the sources for gmp, mpfr, mpc (and isl, if you use it) into the source tree - those then get boostrapped along with the compiler and there are no resulting external dependencies (which I find preferable).
>> 
>> However, —with-gmp= etc should also work with it (I’ll take a look at that case).
> 
> It works fine when using —with-sysroot=   and —with-gmp=/somewhere/outside/the/SDK  (/opt/….)
> 
> So, I think one can get the desired behaviour with this configuration scheme.
> 
> thanks
> Iain
> 

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