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build.rs: always use freebsd12 when rustc_dep_of_std is set #3723

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Jun 15, 2024
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build.rs: always use freebsd12 when rustc_dep_of_std is set #3723

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23 changes: 15 additions & 8 deletions build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -44,14 +44,21 @@ fn main() {
//
// On CI, we detect the actual FreeBSD version and match its ABI exactly,
// running tests to ensure that the ABI is correct.
match which_freebsd() {
Some(10) if libc_ci => set_cfg("freebsd10"),
Some(11) if libc_ci => set_cfg("freebsd11"),
Some(12) if libc_ci || rustc_dep_of_std => set_cfg("freebsd12"),
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I just realized the previous logic for rustc_dep_of_std here wasn't what I thought it was...

The logic was: if the auto-detected version is 12 and rustc_dep_of_std is set, then use freebsd12. If the auto-detected version is anything else and rustc_dep_of_std is set, use freebsd11. If this was deliberate, I don't understand why, and it doesn't match the comments.

With my PR, the logic now is: if rustc_dep_of_std is set, don't even auto-detect, just use version 12. This matches what the comments already said before.

Some(13) if libc_ci => set_cfg("freebsd13"),
Some(14) if libc_ci => set_cfg("freebsd14"),
Some(15) if libc_ci => set_cfg("freebsd15"),
Some(_) | None => set_cfg("freebsd11"),
let which_freebsd = if libc_ci {
which_freebsd().unwrap_or(11)
} else if rustc_dep_of_std {
12
} else {
11
};
match which_freebsd {
x if x < 10 => panic!("FreeBSD older than 10 is not supported"),
10 => set_cfg("freebsd10"),
11 => set_cfg("freebsd11"),
12 => set_cfg("freebsd12"),
13 => set_cfg("freebsd13"),
14 => set_cfg("freebsd14"),
_ => set_cfg("freebsd15"),
}

match emcc_version_code() {
Expand Down