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1.1
date	2024.12.15.03.07.57;	author brook;	state Exp;
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desc
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1.1
log
@The lang/gcc12, lang/gcc13, and lang/gcc14 fail to build on Darwin 24
(MacOS 15) + Xcode 16.  This is a known problem that has been fixed
upstream; see

https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc.gnu.org%2Fbugzilla%2Fshow_bug.cgi%3Fid%3D116809&data=05%7C02%7Cbrook%40biology.nmsu.edu%7C9ac029bebed94a8c076f08dd19568e63%7Ca3ec87a89fb84158ba8ff11bace1ebaa%7C1%7C0%7C638694581737865288%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=DIvQP0mbOte9Pjh3UjtXsSGiQhTontx4GTQHNCFwg6E%3D&reserved=0

and associated patches from 2024-09-24 and 2024-09-27.

The basic problem is that the legacy library libgcc_s.1 referenced
private symbols in the Apple-provided runtime, which have now been
removed by Apple and therefore do not resolve.  Those symbols never
worked anyway, so there should be no legacy code using them.  The
upstream solution is to drop support for libgcc_s.1 for new versions
of Darwin.
@
text
@$NetBSD$

libgcc, Darwin: Drop the legacy library build for macOS >= 15 [PR116809].

We have been building a legacy libgcc_s.1 DSO to support code that
was built with older compilers.

From macOS 15,  the unwinder no longer exports some of the symbols used
in that library which (a) cuases bootstrap fail and (b) means that the
legacy library is no longer useful.

No open branch of GCC emits references to this library - and any already
-built code that depends on the symbols would need rework anyway.

	PR target/116809

See https://github.com/gcc-mirror/gcc/blob/master/libgcc/config/i386/t-darwin.

--- libgcc/config/i386/t-darwin.orig	2024-05-21 07:47:41.000000000 +0000
+++ libgcc/config/i386/t-darwin
@@@@ -4,6 +4,3 @@@@ LIB2FUNCS_EXCLUDE = _fixtfdi _fixunstfdi
 
 # Extra symbols for this port.
 SHLIB_MAPFILES += $(srcdir)/config/i386/libgcc-darwin.ver
-
-# Build a legacy libgcc_s.1
-BUILD_LIBGCCS1 = YES
@