From: Sunil Dora <[email protected]> Fixes [Yocto #16058]
A segmentation fault occurs in rustc (e.g. in llvm::X86ReadAdvanceTable) when reusing sstate artifacts built with different host toolchain versions. Issue sequence: 1. llvm-native is built with a newer toolchain (e.g. GCC 15/Binutils 2.45). 2. rust-native is later built with an older linker. (e.g. GCC 12/Binutils 2.40). 3. The older linker statically links parts of llvm-native into librustc_driver. 4. The resulting binary crashes at runtime inside the statically linked LLVM code. The corruption happens at link time when mixing static native objects produced by different toolchain generations. Enable dynamic LLVM linking (link-shared = true) for rust-native so rustc links against libLLVM.so instead of static archives, avoiding host linker incompatibilities when reusing sstate artifacts. Signed-off-by: Sunil Dora <[email protected]> Suggested-by: Alexander Kanavin <[email protected]> Signed-off-by: Richard Purdie <[email protected]> (cherry picked from commit 74ba238ff1ba1e9b612aece1989b828f3a8f8770) Signed-off-by: Yoann Congal <[email protected]> --- meta/recipes-devtools/rust/rust_1.75.0.bb | 2 ++ 1 file changed, 2 insertions(+) diff --git a/meta/recipes-devtools/rust/rust_1.75.0.bb b/meta/recipes-devtools/rust/rust_1.75.0.bb index b9348bf05071016cf27880258e27babb3f2eec90..f037bb33715dc4ba7cbb489ab1599ac6c8c875a4 100644 --- a/meta/recipes-devtools/rust/rust_1.75.0.bb +++ b/meta/recipes-devtools/rust/rust_1.75.0.bb @@ -128,6 +128,8 @@ python do_configure() { # [llvm] config.add_section("llvm") + if d.getVar('PN') == "rust-native": + config.set("llvm", "link-shared", e(True)) config.set("llvm", "static-libstdcpp", e(False)) if "llvm" in (d.getVar('TC_CXX_RUNTIME') or ""): config.set("llvm", "use-libcxx", e(True)) -- 2.47.3
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