hints/darwin.sh: Use mkostemp from Sierra onwards - #24628
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It's found defined in unistd.h in El Capitan but guarded off with availability macros to indicate it's available from 10.12. I guess that's where the issue arose with it being detected and not being able to link to it.
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It's found defined in
unistd.hin El Capitan but guarded off with availability macros to indicate it's available from 10.12.I guess that's where the issue arose with it being detected and not being able to link to it.
Tested with Perl 5.44.0 on OS X El Capitan 10.11 (darwin 15) with test suite passing.
Tested with Perl 5.44.0 on macOS Sierra 10.12 (darwin 16) with test suite passing.
Tested with blead on macOS 12 (darwin 21) with test suite passing.