(resent with correct address for Iain)
This is the same sort of problem as in PR80204: at present, GCC 11 & 12 assume
that if the
OS version is >= 20, the compiler should see --mmacosx-version-min={major -
9}.{minor -1}.0,
e.g. for OS version 21.3.0 that would be 12.2.0 (the linker sees
-macosx-version-min, same
arguments).
However, the native compiler clang treats 21.3.0 as 12.0.0: the compiler sees
-triple x86_64-apple-macosx12.0.0
and the linker sees
-platform_version macos 12.0.0
the result of which is that linking an object file built with clang and one
built with gcc gives e.g.
ld: warning: object file (null.o) was built for newer macOS version (12.2)
than being linked (12.0)
I propose the following patch, which works fine for me (darwin 21.3.0).
gcc/ChangeLog:
2022-06-02 Simon Wright <si...@pushface.org>
PR target/104871
* config/darwin-driver.cc (darwin_find_version_from_kernel): If the OS
version is
20 (macOS 11) or greater, report the minor version and the patch
level as 0
to match Apple clang’s behaviour.
pr104871.diff
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