cross fails targets x86_64-sun-solaris, x86_64-pc-solaris; *cannot find value O_DIRECT*

[jtmoon79]

Problem

cross fails to build targets x86_64-sun-solaris and x86_64-pc-solaris.

Failure

$ cross check --locked --lib --bins --target x86_64-pc-solaris
...
   Compiling kinded_macros v0.3.0
error[E0425]: cannot find value `O_DIRECT` in crate `libc`
   --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/nix-0.29.0/src/fcntl.rs:113:9
    |
113 |         O_DIRECT;
    |         ^^^^^^^^ not found in `libc`

error[E0425]: cannot find value `SIGINFO` in crate `libc`
    --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/nix-0.29.0/src/sys/signal.rs:119:9
     |
119  |         SIGINFO,
     |         ^^^^^^^
     |
    ::: /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libc-0.2.164/src/unix/solarish/mod.rs:1285:1
     |
1285 | pub const SIGINT: ::c_int = 2;
     | ------------------------- similarly named constant `SIGINT` defined here
     |
help: a constant with a similar name exists
     |
119  |         SIGINT,
     |         ~~~~~~
help: consider importing this unit variant
     |
6    + use crate::sys::signal::Signal::SIGINFO;
     |

error[E0531]: cannot find unit struct, unit variant or constant `SIGINFO` in crate `libc`
    --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/nix-0.29.0/src/sys/signal.rs:119:9
     |
119  |         SIGINFO,
     |         ^^^^^^^
     |
    ::: /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libc-0.2.164/src/unix/solarish/mod.rs:1285:1
     |
1285 | pub const SIGINT: ::c_int = 2;
     | ------------------------- similarly named constant `SIGINT` defined here
     |
help: a constant with a similar name exists
     |
119  |         SIGINT,
     |         ~~~~~~
help: consider importing this unit variant
     |
6    + use crate::sys::signal::Signal::SIGINFO;
     |

    Checking hashbrown v0.14.2
error[E0081]: discriminant value `8` assigned more than once
   --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/nix-0.29.0/src/macros.rs:131:9
    |
131 | /         $v enum $BitFlags {
132 | |             $($entries)*
133 | |         }
    | |_________^
...
255 |                   $entry = libc::$entry,
    |                            ------------
    |                            |
    |                            `8` assigned here
    |                            `8` assigned here
    |
   ::: /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/nix-0.29.0/src/sys/signal.rs:28:1
    |
28  | / libc_enum! {
29  | |     /// Types of operating system signals
30  | |     // Currently there is only one definition of c_int in libc, as well as only one
31  | |     // type for signal constants.
...   |
121 | |     impl TryFrom<i32>
122 | | }
    | |_- in this macro invocation
    |
    = note: this error originates in the macro `libc_enum` (in Nightly build)

To Reproduce

$ rustup target add x86_64-pc-solaris
$ cross check --locked --lib --bins --target x86_64-pc-solaris

or use target x86_64-sun-solaris.

Environment:

• Ubuntu 22.04
• rust 1.73.0

Solution

These cross builds are commented out. See 7eed267 and 786b154 .

Waiting on an updated nix that includes nix-rust/nix#2544 .

Relates to

• PR bump libc=0.2.167 tempfile=3.14.0 termcolor=1.4.1 stringzilla=3.10.11… #353
• PR bump libc 0.2.164 rustix 0.38.41 #350
• PR Solaris: fixes build and tests, adds CI nix-rust/nix#2544
• Issue Add support for x86_64-sun-solaris target nix-rust/nix#935
• Issue fails cross check --target x86_64-pc-solaris on 1.72.1 bytecodealliance/rustix#1217