Open
Description
Related issue: NixOS/nixpkgs#311930
Related PR: NixOS/nixpkgs#320432
In Nixpkgs, rust is often used for things like mesa. We're looking to allow for building systems under LLVM and this is a blocker for mesa. Our problem is the llvm-libunwind option does not seem to work. We continue to get errors with linking with libgcc_s. We're building with these flags (outputted from a nix eval with JSON):
[
"--sysconfdir=/1rz4g4znpzjwh1xymhjpm42vipw92pr73vdgl6xs1hycac8kf2n9/etc",
"--release-channel=stable",
"--set=build.rustc=/nix/store/rbsfq954vg4xxr5wz958ygpdi313wms2-aarch64-unknown-linux-gnu-rustc-wrapper-1.78.0/bin/rustc",
"--set=build.cargo=/nix/store/kd2rzgd1yaqf0cgl61mqj54nqzg01chi-aarch64-unknown-linux-gnu-cargo-1.78.0/bin/cargo",
"--tools=rustc,rustdoc,rust-analyzer-proc-macro-srv",
"--enable-rpath",
"--enable-vendor",
"--build=aarch64-unknown-linux-gnu",
"--host=aarch64-unknown-linux-gnu",
"--target=aarch64-unknown-linux-gnu,wasm32-unknown-unknown,aarch64-unknown-linux-gnu",
"--set=target.aarch64-unknown-linux-gnu.cc=/nix/store/a11996pij79myrp43myn4zycdlzh9jsw-gcc-wrapper-13.3.0/bin/cc",
"--set=target.aarch64-unknown-linux-gnu.cc=/nix/store/pjq4j90az01m6hgf7fd3jiilnp7f0cb6-aarch64-unknown-linux-gnu-clang-wrapper-17.0.6/bin/aarch64-unknown-linux-gnu-clang",
"--set=target.aarch64-unknown-linux-gnu.cc=/nix/store/pjq4j90az01m6hgf7fd3jiilnp7f0cb6-aarch64-unknown-linux-gnu-clang-wrapper-17.0.6/bin/aarch64-unknown-linux-gnu-clang",
"--set=target.aarch64-unknown-linux-gnu.linker=/nix/store/a11996pij79myrp43myn4zycdlzh9jsw-gcc-wrapper-13.3.0/bin/cc",
"--set=target.aarch64-unknown-linux-gnu.linker=/nix/store/pjq4j90az01m6hgf7fd3jiilnp7f0cb6-aarch64-unknown-linux-gnu-clang-wrapper-17.0.6/bin/aarch64-unknown-linux-gnu-clang",
"--set=target.aarch64-unknown-linux-gnu.linker=/nix/store/pjq4j90az01m6hgf7fd3jiilnp7f0cb6-aarch64-unknown-linux-gnu-clang-wrapper-17.0.6/bin/aarch64-unknown-linux-gnu-clang",
"--set=target.aarch64-unknown-linux-gnu.cxx=/nix/store/a11996pij79myrp43myn4zycdlzh9jsw-gcc-wrapper-13.3.0/bin/c++",
"--set=target.aarch64-unknown-linux-gnu.cxx=/nix/store/pjq4j90az01m6hgf7fd3jiilnp7f0cb6-aarch64-unknown-linux-gnu-clang-wrapper-17.0.6/bin/aarch64-unknown-linux-gnu-clang++",
"--set=target.aarch64-unknown-linux-gnu.cxx=/nix/store/pjq4j90az01m6hgf7fd3jiilnp7f0cb6-aarch64-unknown-linux-gnu-clang-wrapper-17.0.6/bin/aarch64-unknown-linux-gnu-clang++",
"--set=target.aarch64-unknown-linux-gnu.crt-static=false",
"--set=target.aarch64-unknown-linux-gnu.crt-static=false",
"--set=target.aarch64-unknown-linux-gnu.crt-static=false",
"--enable-llvm-link-shared",
"--set=target.aarch64-unknown-linux-gnu.llvm-config=/nix/store/bzgbd6wr5x73nx41y4gilvvppmxjknjc-llvm-18.1.7-dev/bin/llvm-config",
"--set=target.aarch64-unknown-linux-gnu.llvm-config=/nix/store/xxlgyd2nj8dr32jhkriixzjy1pag1j84-llvm-18.1.7-dev/bin/llvm-config",
"--set=target.aarch64-unknown-linux-gnu.llvm-config=/nix/store/xxlgyd2nj8dr32jhkriixzjy1pag1j84-llvm-18.1.7-dev/bin/llvm-config",
"--enable-profiler",
"--llvm-libunwind=system"
]