From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com> Date: Fri, 12 Mar 2021 17:31:56 +0100 Subject: [PATCH] compiler: Change LLVM targets - Change x86_64-unknown-linux-gnu to use x86_64-pc-linux-gnu - Change i686-unknown-linux-gnu to use i686-pc-linux-gnu Reintroduce the aliasing that was removed in 1.52.0 and alias the -pc- triples to the -unknown- triples. This avoids defining proper -pc- targets, as things break when this is done: - The crate ecosystem expects the -unknown- targets. Making -pc- rustc's host triple (and thus default target) would break various crates. - Firefox's build breaks when the host triple (from `rustc --version --verbose`) is different from the target triple (from `rustc --print target-list`) that best matches autoconf. --- compiler/rustc_session/src/config.rs | 2 +- compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs | 2 +- compiler/rustc_target/src/spec/mod.rs | 9 +++++++++ .../rustc_target/src/spec/x86_64_unknown_linux_gnu.rs | 2 +- 4 files changed, 12 insertions(+), 3 deletions(-) diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs index 14ad1a42a7d8..efd47c47293b 100644 --- a/compiler/rustc_session/src/config.rs +++ b/compiler/rustc_session/src/config.rs @@ -1867,7 +1867,7 @@ pub fn parse_target_triple( early_error(error_format, &format!("target file {path:?} does not exist")) }) } - Some(target) => TargetTriple::TargetTriple(target), + Some(target) => TargetTriple::from_alias(target), _ => TargetTriple::from_triple(host_triple()), } } diff --git a/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs index 0998c618f31a..91c79c7e4ff0 100644 --- a/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs +++ b/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs @@ -9,7 +9,7 @@ pub fn target() -> Target { base.stack_probes = StackProbeType::Call; Target { - llvm_target: "i686-unknown-linux-gnu".into(), + llvm_target: "i686-pc-linux-gnu".into(), pointer_width: 32, data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\ f64:32:64-f80:32-n8:16:32-S128" diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs index da0589cdd209..dc9865bdf64a 100644 --- a/compiler/rustc_target/src/spec/mod.rs +++ b/compiler/rustc_target/src/spec/mod.rs @@ -2506,6 +2506,15 @@ pub fn from_path(path: &Path) -> Result<Self, io::Error> { Ok(TargetTriple::TargetJson { path_for_rustdoc: canonicalized_path, triple, contents }) } + /// Creates a target triple from its alias + pub fn from_alias(triple: String) -> Self { + match triple.as_str() { + "x86_64-pc-linux-gnu" => TargetTriple::from_triple("x86_64-unknown-linux-gnu"), + "i686-pc-linux-gnu" => TargetTriple::from_triple("i686-unknown-linux-gnu"), + _ => TargetTriple::TargetTriple(triple), + } + } + /// Returns a string triple for this target. /// /// If this target is a path, the file name (without extension) is returned. diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs index e525cfdde14f..2dfe25f4f238 100644 --- a/compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs +++ b/compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs @@ -15,7 +15,7 @@ pub fn target() -> Target { | SanitizerSet::THREAD; Target { - llvm_target: "x86_64-unknown-linux-gnu".into(), + llvm_target: "x86_64-pc-linux-gnu".into(), pointer_width: 64, data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" .into(),