Gm2 on Mac PPC

[john o goyo]

Greetings.

Some time ago, someone asked this list about gm2 on PPC Mac.  The 
following query and response should help. Basically, first build GCC-10 
and then use it to build GCC-13.

I have not tried it yet because my G5 is currently unavailable but I 
shall try it.

Sincerely,
john


-------- Forwarded Message --------
Subject: Re: last version of gcc for 32 bit power pc mac?
Date: Thu, 20 Apr 2023 21:22:55 +0100
From: Iain Sandoe <...@...>
To: Arnold Skeeve <...@<...>
CC: gcc-help@gnu.org

HI Arnold

> On 20 Apr 2023, at 20:45, Jonathan Wakely <jwakely.gcc@gmail.com> wrote:

> ---------- Forwarded message ---------
> From: Aharon Robbins <arnold@skeeve.com>
> Date: Thu, 20 Apr 2023, 19:07
> Subject: last version of gcc for 32 bit power pc mac?
> To: <gcc-help@gnu.org>

> I have a ~20 year old 32 bit Power PC macintosh system that still runs.

Yup .. me too - my oldest oldest is a 500MHz power mac AGP (runs darwin8 
and takes 3 days to bootstrap the compiler and a week to test it)..

.. but mostly I work on a Quad G5.

> Can someone tell me the most recent version of GCC that still supports
> this platform?

GCC supports powerpc-darwin9 (and actually powerpc using Rosetta on 
darwin10) up to and including current trunk (GCC-14).  The only 
constraint is the compiler used to bootstrap the build.

Iff you want to build GCC with the last released xcode (3.1.4)  for 
Darwin9 [MacOSX 10.5] then you will need to stick with GCC10.x as the 
last version (newer GCC now needs C++11 to bootstrap, which is not 
supported by xcode 3.1.4).

However, once you have a suitable bootstrap compiler [GCC 5 or newer] 
you can use that to build any current version of GCC.

I publish branches with some “go faster stripes” for MacOSX / Darwin 
here: https://github.com/iains
(but for powerpc darwin, the upstream branches should also be fine).

HTH,
Iain