[xtqqczze]

Follow-up to #138744.

Found this while working on Hermit OS support for Rustix (bytecodealliance/rustix#1672)

$ cargo +nightly check -q -Zbuild-std --target x86_64-unknown-hermit
error[E0425]: cannot find value `IPV6_UNICAST_HOPS` in crate `c`
   --> ~/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/net/connection/socket/mod.rs:534:61
    |
534 |                 setsockopt(&self.inner, c::IPPROTO_IPV6, c::IPV6_UNICAST_HOPS, limit as c_int)
    |                                                             ^^^^^^^^^^^^^^^^^ not found in `c`
...
error[E0425]: cannot find value `IPV6_MULTICAST_HOPS` in crate `c`
   --> ~/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/net/connection/socket/mod.rs:957:61
    |
957 |                 setsockopt(&self.inner, c::IPPROTO_IPV6, c::IPV6_MULTICAST_HOPS, limit as c_int)
    |                                                             ^^^^^^^^^^^^^^^^^^^ not found in `c`
    |

cc: @Mallets

[rustbot]

r? @Mark-Simulacrum

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[xtqqczze]

The same issue also exists for target_os = "solid_asp3" e.g. aarch64-kmc-solid_asp3.

[xtqqczze]

r? jhpratt