kbuild: rust: use -Zdebuginfo-compression

Rust 1.74.0 introduced (unstable) support for the `-Zdebuginfo-compression` flag, thus use it. Note that the releases built by the Rust project (i.e. the ones provided by rustup) do not enable support for zstd in their bundled LLVM (yet, at least), thus the Rust compiler will warn, but the build will proceed: warning: unknown debuginfo compression algorithm zstd - will fall back to uncompressed debuginfo Link: rust-lang/rust#120953 Link: rust-lang/rust#115358 Reviewed-by: Alice Ryhl <[email protected]> Link: https://lore.kernel.org/r/[email protected] [ Added note about zstd support in Rust-provided binaries. ] Signed-off-by: Miguel Ojeda <[email protected]>
Rust-for-Linux · Apr 2, 2024 · dbef181 · dbef181
1 parent b8b2096
commit dbef181
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/scripts/Makefile.debug b/scripts/Makefile.debug
@@ -35,10 +35,12 @@ endif
 
 ifdef CONFIG_DEBUG_INFO_COMPRESSED_ZLIB
 DEBUG_CFLAGS	+= -gz=zlib
+DEBUG_RUSTFLAGS	+= -Zdebuginfo-compression=zlib
 KBUILD_AFLAGS	+= -gz=zlib
 KBUILD_LDFLAGS	+= --compress-debug-sections=zlib
 else ifdef CONFIG_DEBUG_INFO_COMPRESSED_ZSTD
 DEBUG_CFLAGS	+= -gz=zstd
+DEBUG_RUSTFLAGS	+= -Zdebuginfo-compression=zstd
 KBUILD_AFLAGS	+= -gz=zstd
 KBUILD_LDFLAGS	+= --compress-debug-sections=zstd
 endif