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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:21 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:21 +0000 |
commit | 4e8199b572f2035b7749cba276ece3a26630d23e (patch) | |
tree | f09feeed6a0fe39d027b1908aa63ea6b35e4b631 /vendor/rustix/build.rs | |
parent | Adding upstream version 1.66.0+dfsg1. (diff) | |
download | rustc-4e8199b572f2035b7749cba276ece3a26630d23e.tar.xz rustc-4e8199b572f2035b7749cba276ece3a26630d23e.zip |
Adding upstream version 1.67.1+dfsg1.upstream/1.67.1+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/rustix/build.rs')
-rw-r--r-- | vendor/rustix/build.rs | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/vendor/rustix/build.rs b/vendor/rustix/build.rs index f6fa64579..56c6b1557 100644 --- a/vendor/rustix/build.rs +++ b/vendor/rustix/build.rs @@ -4,7 +4,7 @@ use std::env::var; use std::io::Write; /// The directory for out-of-line ("outline") libraries. -const OUTLINE_PATH: &str = "src/imp/linux_raw/arch/outline"; +const OUTLINE_PATH: &str = "src/backend/linux_raw/arch/outline"; fn main() { // Don't rerun this on changes other than build.rs, as we only depend on @@ -101,6 +101,11 @@ fn main() { } } + // Detect whether the compiler requires us to use thumb mode on ARM. + if arch == "arm" && use_thumb_mode() { + use_feature("thumb_mode"); + } + println!("cargo:rerun-if-env-changed=CARGO_CFG_RUSTIX_USE_EXPERIMENTAL_ASM"); } @@ -151,6 +156,11 @@ fn link_in_librustix_outline(arch: &str, asm_name: &str) { } } +fn use_thumb_mode() -> bool { + // In thumb mode, r7 is reserved. + !can_compile("pub unsafe fn f() { core::arch::asm!(\"udf #16\", in(\"r7\") 0); }") +} + fn use_feature_or_nothing(feature: &str) { if has_feature(feature) { use_feature(feature); @@ -174,10 +184,13 @@ fn can_compile(code: &str) -> bool { use std::process::Stdio; let out_dir = var("OUT_DIR").unwrap(); let rustc = var("RUSTC").unwrap(); + let target = var("TARGET").unwrap(); let mut child = std::process::Command::new(rustc) .arg("--crate-type=rlib") // Don't require `main`. .arg("--emit=metadata") // Do as little as possible but still parse. + .arg("--target") + .arg(target) .arg("--out-dir") .arg(out_dir) // Put the output somewhere inconsequential. .arg("-") // Read from stdin. |