Hi,

I’d like to post an updated and rebased version of Iain Sandoe’s patches for modern darwin, originally posted in November 2021: https://gcc.gnu.org/pipermail/gcc-patches/2021-November/584775.html

The rationale in that message is pretty much unchanged, and the patches have been since tested thoroughly on darwin (both Intel and ARM) for almost two years now. We have been shipping Iain’s branch (including these patches) since then in Homebrew and most other major distros of GCC on Darwin. So I think it’s been very thoroughly tested.

The main comment that arose from review in the previous incarnation was the need to at least offer the libtool part of the patch to upstream, in order to reduce in the long term the divergence between our version and upstream. I have done so in https://savannah.gnu.org/patch/index.php?10385

(I would also note that I have offered other suggestions of small snippets that could be upstream in libtool for darwin, but have not received much feedback for now: https://savannah.gnu.org/patch/?10371)

I am currently retesting the patches on various archs (Linux and Darwin) after a final rebase, but various previous versions were regression-tested, and have been shipped for a long time in Homebrew.

OK to commit?
FX