Add missing constants from unistd.h for newlib targets
#4811
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tgross35
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Nov 4, 2025
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Thanks for the fix, I have a few small nits here.
Could you also move these constants to src/new/newlib/unistd.rs? We're slowly migrating to a structure that follows the source closer.
FenrirWolf
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Sure, I moved the definitions and changed them to match the source too. |
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Nov 4, 2025
(backport <rust-lang#4811>) (cherry picked from commit e654f3a)
tgross35
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(backport <rust-lang#4811>) (cherry picked from commit e654f3a)
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Description
A new API was recently added to
std, and as a result a number of newlib-based targets are failing to build due to a missing definition for_SC_HOST_NAME_MAXfrom theunistd.hheader. This PR adds that missing constant along with a number of othersysconfsymbols that never made it into the crate for these targets.Sources
https://github.com/bminor/newlib/blob/master/newlib/libc/include/sys/unistd.h#L354-L512
Checklist
libc-test/semverhave been updated*LASTor*MAXareincluded (see #3131)
cd libc-test && cargo test --target mytarget);especially relevant for platforms that may not be checked in CI
@rustbot label +stable-nominated