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c926476d01
Make `profiler_builtins` an optional dependency of sysroot, not std This avoids unnecessary rebuilds of std (and the compiler) when `build.profiler` is toggled off or on. Fixes #131812. --- Background: The `profiler_builtins` crate has been an optional dependency of std (behind a cargo feature) ever since it was added back in #42433. But as far as I can tell that has only ever been a convenient way to force the crate to be built, not a genuine dependency. The side-effect of this false dependency is that toggling `build.profiler` causes a rebuild of std and the compiler, which shouldn't be necessary. This PR therefore makes `profiler_builtins` an optional dependency of the dummy sysroot crate (#108865), rather than a dependency of std. What makes this change so small is that all of the necessary infrastructure already exists. Previously, bootstrap would enable the `profiler` feature on the sysroot crate, which would forward that feature to std. Now, enabling that feature directly enables sysroot's `profiler_builtins` dependency instead. --- I believe this is more of a bootstrap change than a libs change, so tentatively: r? bootstrap |
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| alloc | ||
| backtrace@230570f2da | ||
| core | ||
| panic_abort | ||
| panic_unwind | ||
| portable-simd | ||
| proc_macro | ||
| profiler_builtins | ||
| rtstartup | ||
| rustc-std-workspace-alloc | ||
| rustc-std-workspace-core | ||
| rustc-std-workspace-std | ||
| std | ||
| stdarch@c881fe3231 | ||
| sysroot | ||
| test | ||
| unwind | ||
| windows_targets | ||
| Cargo.lock | ||
| Cargo.toml | ||