Feature/build on older macos#50
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[why] Building on Apple often involves setting the target MacOS version Independent of compiler etc. This is done with clang's `-mmacosx-version-min` command line flag. Typically this is set to 10.9, as Apple switch from libstdc++ to libc++ with 10.9. With MacOS prior to 10.13 we need to enable the aligned allocation, with the switch `-faligned-allocation`: "Enable C++17 aligned allocation functions" With MacOS 10.13 and later the `-faligned-allocation` became standard, but it does not hurt to insist on it as some projects might have turned it off via `-fno-aligned-allocation`. This commit is driven by the need to build GUL via conda-build which targets all MacOS 10.9+. 10.9 (Mavericks, 2013) Minimum version we want to support 10.13 (High Sierra, 2017) Minimum version that has C++17 allocators [how] As we rely on these now, enable them if we can. Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
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Extend the explanation in the commit message, force push. |
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But the second commit has no proper description. I have a similar patch laying around...you may wanna take that... 😉
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soerengrunewald
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Jun 3, 2026
[Why] It has become quite verbose to first check and then eventually add the compiler option. Luckily for us, meson has a shortcut for this scenario, where we give it a list of candidates and receive a list of all supported options, which we can use directly. Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
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See
meson: Allow SmallVector to compile on all Macs
[why]
Building on Apple often involves setting the target MacOS version
Independent of compiler etc. This is done with clang's
-mmacosx-version-mincommand line flag.
Typically this is set to 10.9, as Apple switch from libstdc++ to libc++
with 10.9.
With MacOS prior to 10.13 we need to enable the aligned allocation, with the
switch
-faligned-allocation:"Enable C++17 aligned allocation functions"
With MacOS 10.13 and later the
-faligned-allocationbecame standard,but it does not hurt to insist on it as some projects might have turned
it off via
-fno-aligned-allocation.This commit is driven by the need to build GUL via conda-build which
targets all MacOS 10.9+.
10.9 (Mavericks, 2013) Minimum version we want to support
10.13 (High Sierra, 2017) Minimum version that has C++17 allocators
[how]
As we rely on these now, enable them if we can.