4fff3209df
Disable DWARF in linker options for i686-unknown-uefi This fixes an lld warning: > warning: linker stderr: rust-lld: section name .debug_frame is longer than 8 characters and will use a non-standard string table See https://reviews.llvm.org/D69594 for details of where the warning was added. This warning only occurs with the i686 UEFI target, not x86_64 or aarch64. The x86_64 target uses an LLVM target of `x86_64-unknown-windows` and aarch64 uses `aarch64-unknown-windows`, but i686 uses `i686-unknown-windows-gnu` (note the `-gnu`). See comments in `i686_unknown_uefi.rs` for details of why. The `.debug_frame` section should not actually be needed; UEFI targets provide a separate PDB file for debugging. Disable DWARF (and by extension the `.debug_frame` section) by passing `/DEBUG:NODWARF` to lld. Tested with: ``` export RUSTC_LOG=rustc_codegen_ssa:🔙:link=info cargo +stage1 build --release --target i686-unknown-uefi ``` This issue was originally raised here: https://github.com/rust-lang/rust/pull/119286#issuecomment-2612746162. See also https://github.com/rust-lang/rust/issues/136096. It was suggested to file an LLVM bug, but I don't think LLVM is actually doing anything wrong as such. CC `@dvdhrm` `@jyn514` let me know if you have any feedback on this approach |
||
|---|---|---|
| .. | ||
| src | ||
| Cargo.toml | ||
| README.md | ||
rustc_target contains some very low-level details that are
specific to different compilation targets and so forth.
For more information about how rustc works, see the rustc dev guide.