Build fails with `-Csplit-debuginfo` is unstable on this platform

[gco]

Building rust on Solaris-x86_64 for the past few releases (now 1.63.0), it seems that late in the build process it still uses the bootstrap compiler where it fails with:

`-Csplit-debuginfo` is unstable on this platform

from this code: compiler/rustc_session/src/config.rs:build_session_options()

The compiler is invoked with -Csplit-debuginfo=off, but that code doesn't handle "off" as disabling split-debuginfo.

Changing the error to a warning in the build tree does not workaround the issue, I have to change it to a warning in the previous version of rust used as a bootstrap compiler.

[siketyan]

Experiencing this when building for custom target (JSON file) on macOS (aarch64-apple-darwin) using Rust toolchain v1.65.0-nightly (2022-09-02)

[A1-Triard]

Can anybody suggest a workaround for this issue?

[Painter602]

I, get a similar message on Windows 10 Home:

error: -Csplit-debuginfo=unpacked is unstable on this platform

[DianaSensei]

I got same error -Csplit-debuginfo=unpacked is unstable on this platform` in Window 11 Pro version 22H2 build 22621.900 cargo 1.65 rustc 1.65

[lucasjinreal]

Same, clue?

[jyn514]

I think at this point all platforms support -C split-debuginfo=off except for MSVC:

PS C:\Users\jyn\src\rust> rg supported_split_debuginfo .\compiler\rustc_target\src\spec -A3 -g '!compiler/rustc_target/src/spec/mod.rs'
.\compiler\rustc_target\src\spec\windows_gnullvm_base.rs
44:        supported_split_debuginfo: Cow::Borrowed(&[SplitDebuginfo::Off]),
45-        ..Default::default()
46-    }
47-}

.\compiler\rustc_target\src\spec\windows_gnu_base.rs
104:        supported_split_debuginfo: Cow::Borrowed(&[SplitDebuginfo::Off]),
105-        ..Default::default()
106-    }
107-}

.\compiler\rustc_target\src\spec\msvc_base.rs
21:        supported_split_debuginfo: Cow::Borrowed(&[SplitDebuginfo::Packed]),
22-        debuginfo_kind: DebuginfoKind::Pdb,
23-
24-        ..Default::default()

.\compiler\rustc_target\src\spec\linux_base.rs
14:        supported_split_debuginfo: Cow::Borrowed(&[
15-            SplitDebuginfo::Packed,
16-            SplitDebuginfo::Unpacked,
17-            SplitDebuginfo::Off,

.\compiler\rustc_target\src\spec\apple_base.rs
156:        supported_split_debuginfo: Cow::Borrowed(&[
157-            SplitDebuginfo::Packed,
158-            SplitDebuginfo::Unpacked,
159-            SplitDebuginfo::Off,

PS C:\Users\jyn\src\rust> rg -B1 \[SplitDebuginfo .\compiler\rustc_target\src\spec\mod.rs
1711-    /// Which kinds of split debuginfo are supported by the target?
1712:    pub supported_split_debuginfo: StaticCow<[SplitDebuginfo]>,
--
1958-            // `Off` is supported by default, but targets can remove this manually, e.g. Windows.
1959:            supported_split_debuginfo: Cow::Borrowed(&[SplitDebuginfo::Off]),

Are you still running into this issue?

[jyn514]

I'm going to close this since split-debuginfo=off has been stabilized everywhere except MSVC. I'm pretty sure this requires a custom config set anyway.