Darwin: Use 'enable-darwin-at-rpath' on newer macOS versions

[markmentovai]

Hi, Iain. This one makes sense for both https://github.com/iains/gcc-darwin-arm64 and https://github.com/iains/gcc-12-branch, and perhaps older branches.

Along with https://github.com/gcc-mirror/gcc/commit/6725f186cb70d48338f69456864bf469a12ee5be and https://patchwork.ozlabs.org/project/gcc/patch/[email protected]/, it should bring things into shape for macOS 13, modulo one SDK fix required in Xcode 14.0b1 and already reported to Apple.

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https://patchwork.ozlabs.org/project/gcc/patch/[email protected]/ added enable-darwin-at-runpath and enabled it by default on macOS versions from 10.11 through 12 inclusive, but was not future-proof. macOS 13 is expected for public release later this year.

This change extends support through macOS 19, which is expected to be good for 7 more years under the current OS versioning scheme.

ChangeLog:

    * libtool.m4: Future-proof default setting of
    'enable-darwin-at-runpath'.

gcc/ChangeLog:

    * configure: Regenerate.

libatomic/ChangeLog:

    * configure: Regenerate.

libcc1/ChangeLog:

    * configure: Regenerate.

libffi/ChangeLog:

    * configure: Regenerate.

libgfortran/ChangeLog:

    * configure: Regenerate.

libgomp/ChangeLog:

    * configure: Regenerate.

libitm/ChangeLog:

    * configure: Regenerate.

libobjc/ChangeLog:

    * configure: Regenerate.

liboffloadmic/ChangeLog:

    * configure: Regenerate.

libphobos/ChangeLog:

    * configure: Regenerate.

libquadmath/ChangeLog:

    * configure: Regenerate.

libsanitizer/ChangeLog:

    * configure: Regenerate.

libssp/ChangeLog:

    * configure: Regenerate.

libstdc++-v3/ChangeLog:

    * configure: Regenerate.

libvtv/ChangeLog:

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lto-plugin/ChangeLog:

    * configure: Regenerate.

zlib/ChangeLog:

    * configure: Regenerate.

Signed-off-by: Mark Mentovai [email protected]

[iains]

Hi Mark, thanks for the patch.

.. this seems reasonable. However, the master version of the aarch64 port really needs rebasing (I have been very busy with other work) so I think I'll probably apply this to 12.1r1 and 11.3r2 (maybe even 10.4r0) first and pull it into the master version at a later date.

[markmentovai]

That’s no problem. I was primarily hoping to get this into iains/gcc-12-branch as that’s where MacPorts gcc-devel on mac-arm64 is currently pulling from (although it’d be great if that could move to the gcc trunk as well). Thanks.

[iains]

I think this is now handled OK in 12.x and master, right?

[markmentovai]

I think this is now handled OK in 12.x and master, right?

Think so. I think that this was only a problem in your branches. Upstream doesn’t have enable_darwin_at_rpath at all.

[iains]

OK, thanks again for the patch - as it happened, libtool.m4 Darwin changes were reworked to deal with some other issues and we now cover a wider range of OS versions (at least until Darwin30) as part of that, so closing this pull request.