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63 lines
2.3 KiB
Rust
63 lines
2.3 KiB
Rust
// Builds with fat link-time-optimizations and the --sysroot flag used to be
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// non-deterministic - that means, compiling twice with no changes would create
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// slightly different outputs. This has been fixed by #63352 and #63505.
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// Test 1: Compile with fat-lto twice, check that both compilation outputs are identical.
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// Test 2: Compile with sysroot, then change the sysroot path from absolute to relative.
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// Outputs should be identical.
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// See https://github.com/rust-lang/rust/issues/34902
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//@ ignore-cross-compile
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//@ ignore-windows-gnu
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// GNU Linker for Windows is non-deterministic.
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use run_make_support::{bin_name, is_windows_msvc, rfs, rust_lib_name, rustc};
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fn main() {
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// test 1: fat lto
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rustc().input("reproducible-build-aux.rs").run();
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let make_reproducible_build = || {
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let mut reproducible_build = rustc();
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reproducible_build
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.input("reproducible-build.rs")
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.arg("-Clto=fat")
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.output(bin_name("reproducible-build"));
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if is_windows_msvc() {
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// Avoids timestamps, etc. when linking.
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reproducible_build.arg("-Clink-arg=/Brepro");
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}
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reproducible_build.run();
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};
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make_reproducible_build();
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rfs::rename(bin_name("reproducible-build"), "reproducible-build-a");
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if is_windows_msvc() {
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// Linker acts differently if there is already a PDB file with the same
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// name.
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rfs::remove_file("reproducible-build.pdb");
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}
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make_reproducible_build();
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assert_eq!(rfs::read(bin_name("reproducible-build")), rfs::read("reproducible-build-a"));
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// test 2: sysroot
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let sysroot = rustc().print("sysroot").run().stdout_utf8();
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let sysroot = sysroot.trim();
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rustc().input("reproducible-build-aux.rs").run();
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rustc()
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.input("reproducible-build.rs")
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.crate_type("rlib")
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.sysroot(&sysroot)
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.arg(format!("--remap-path-prefix={sysroot}=/sysroot"))
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.run();
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rfs::copy_dir_all(&sysroot, "sysroot");
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rfs::rename(rust_lib_name("reproducible_build"), rust_lib_name("foo"));
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rustc()
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.input("reproducible-build.rs")
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.crate_type("rlib")
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.sysroot("sysroot")
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.arg("--remap-path-prefix=/sysroot=/sysroot")
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.run();
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assert_eq!(rfs::read(rust_lib_name("reproducible_build")), rfs::read(rust_lib_name("foo")));
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}
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