Add support for Musl libc with canImport(Musl) checks
#772
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Since Musl is sufficiently different from Glibc (see https://wiki.musl-libc.org/functional-differences-from-glibc.html), it requires a different import, which now should be applied to files that have `import Glibc` in them. Musl is a low footprint libc that's used in Linux distributions such as Alpine Linux, which allows producing fairly small container images. Additionally, unlike Glibc, musl allows full static linking, meaning apps can be easily distributed to an arbitrary Linux distribution that may have a version of Glibc incompatible with the one that Swift is usually built with or no Glibc installed at all.
MaxDesiatov
added
enhancement
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@swift-ci test |
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@swift-ci Please test Windows platform |
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(Windows failed during checkout.) |
al45tair
approved these changes
Jul 18, 2023
benlangmuir
approved these changes
Jul 18, 2023
ahoppen
approved these changes
Jul 18, 2023
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@swift-ci test windows |
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Since Musl is sufficiently different from Glibc (see https://wiki.musl-libc.org/functional-differences-from-glibc.html), it requires a different import, which now should be applied to files that have
import Glibcin them.Musl is a low footprint libc that's used in Linux distributions such as Alpine Linux, which allows producing fairly small container images. Additionally, unlike Glibc, musl allows full static linking, meaning apps can be easily distributed to an arbitrary Linux distribution that may have a version of Glibc incompatible with the one that Swift is usually built with or no Glibc installed at all.