Can't build Ada

[Iain Sandoe]

Hi Paul,

> On 26 Nov 2022, at 18:06, Paul Koning via Gcc <gcc@gcc.gnu.org> wrote:
> 
>> On Nov 26, 2022, at 11:42 AM, Arnaud Charlet via Gcc <gcc@gcc.gnu.org> wrote:
>> 
>>>> The current statement  (https://gcc.gnu.org/install/prerequisites.html) is:
>>>> 
>>>> GNAT
>>>> In order to build GNAT, the Ada compiler, you need a working GNAT compiler (GCC version 5.1 or later).
>>>> 
>>>> so, if 5.1 is not working, then perhaps a PR is in order.
>>> 
>>> I will do that, if the "shell in Rosetta" thing doesn't cure the problem.
>> 
>> You won’t need to, the version of gnat you are using is recent enough, you need to follow Ian’s instructions to the letter. The Ada 2022 code is a red herring and is only problematic when you build a cross with a non matching native, not when building a native compiler.

For the record, I have now pushed an updated development branch (based off upstream r13-4309-g309e2d95e3b9) which builds c-family, fortran and Ada on
 - x86_64 [Darwin20] (with cross and native cross to aarch64), using XC CLT  12.5
 - x86_64 Rosetta 2 [Darwin21] bootstrap and cross, using XC CLT 14.1RC + macOSX12 sdk.
 - aarch64 [Darwin21] native (assuming you have an existing aarch64 darwin GCC bootstrap), using XC CLT 14.1RC + macOSX12 sdk.***

.. I’ve fixed up the DFP and testcases (although clang does not support _DecimalXX on aarch64 Darwin, so maybe it’s of limited use) .. but at least that source of testsuite noise is eliminated.

cheers
Iain

*** note that we have some issues with the macOS13 SDK still to be resolved so make sure you use the 12 version on macOS 12 (at least).