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1d1316240f
The exact reasoning why we do not always pass the SDK root when linking on macOS eludes me, but I suspect it's because we want to support compiler drivers which do not support the `-isysroot` option. Since we now pass the SDK root via the environment variable SDKROOT, compiler drivers that don't support it can just ignore it. Similarly, since we only warn when xcrun fails, users that expect their compiler driver to provide the SDK location can do so now.
33 lines
1.2 KiB
Rust
33 lines
1.2 KiB
Rust
//! Test that linking works under an environment similar to what Xcode sets up.
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//!
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//! Regression test for https://github.com/rust-lang/rust/issues/80817.
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//@ only-apple
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use run_make_support::{cmd, rustc, target};
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fn main() {
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// Fetch toolchain `/usr/bin` directory. Usually:
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// /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
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let clang_bin = cmd("xcrun").arg("--find").arg("clang").run().stdout_utf8();
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let toolchain_bin = clang_bin.trim().strip_suffix("/clang").unwrap();
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// Put toolchain directory at the front of PATH.
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let path = format!("{}:{}", toolchain_bin, std::env::var("PATH").unwrap());
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// Check that compiling and linking still works.
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//
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// Removing `SDKROOT` is necessary for the test to excercise what we want, since bootstrap runs
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// under `/usr/bin/python3`, which will set SDKROOT for us.
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rustc().target(target()).env_remove("SDKROOT").env("PATH", &path).input("foo.rs").run();
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// Also check linking directly with the system linker.
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rustc()
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.target(target())
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.env_remove("SDKROOT")
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.env("PATH", &path)
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.input("foo.rs")
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.arg("-Clinker-flavor=ld")
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.run();
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}
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