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Matthias Krüger b1d1e99c22
Rollup merge of #113780 - dtolnay:printkindpath, r=b-naber 
Support `--print KIND=PATH` command line syntax

As is already done for `--emit KIND=PATH` and `-L KIND=PATH`.

In the discussion of #110785, it was pointed out that `--print KIND=PATH` is nicer than trying to apply the single global `-o` path to `--print`'s output, because in general there can be multiple print requests within a single rustc invocation, and anyway `-o` would already be used for a different meaning in the case of `link-args` and `native-static-libs`.

I am interested in using `--print cfg=PATH` in Buck2. Currently Buck2 works around the lack of support for `--print KIND=PATH` by [indirecting through a Python wrapper script](d43cf3a51a/prelude/rust/tools/get_rustc_cfg.py) to redirect rustc's stdout into the location dictated by the build system.

From skimming Cargo's usages of `--print`, it definitely seems like it would benefit from `--print KIND=PATH` too. Currently it is working around the lack of this by inserting `--crate-name=___ --print=crate-name` so that it can look for a line containing `___` as a delimiter between the 2 other `--print` informations it actually cares about. This is commented as a "HACK" and "abuse". 31eda6f7c3/src/cargo/core/compiler/build_context/target_info.rs (L242) (FYI `@weihanglo` as you dealt with this recently in https://github.com/rust-lang/cargo/pull/11633.)

Mentioning reviewers active in #110785: `@fee1-dead` `@jyn514` `@bjorn3`
2023-07-21 06:52:28 +02:00
..
bootstrap Rollup merge of #113800 - oli-obk:gha_ci_cycle, r=jyn514 2023-07-20 17:19:32 +02:00
ci Auto merge of #113714 - Kobzol:ci-cmake, r=nikic 2023-07-17 15:46:43 +00:00
doc Rollup merge of #113780 - dtolnay:printkindpath, r=b-naber 2023-07-21 06:52:28 +02:00
etc Improve htmldocck error a bit by providing line where error occurred 2023-07-19 14:34:06 +02:00
librustdoc Rollup merge of #113883 - steffahn:rustdoc-search-crate-selector-padding, r=GuillaumeGomez 2023-07-20 17:19:34 +02:00
llvm-project@06248fa7f3 Update LLVM submodule 2023-06-20 00:49:54 +01:00
rustdoc-json-types Verify that ItemEnum can be serialized and then deserialized using bincode 2023-05-22 18:26:20 +01:00
tools XSimplifiedType to SimplifiedType::X 2023-07-20 11:05:52 +02:00
README.md Remove stale reference to the test suite location 2023-01-13 11:49:06 +00:00
stage0.json Bump bootstrap compiler to latest 2023-07-12 21:26:04 -04:00
version Bump version 2023-07-08 10:35:49 -04:00

README.md

This directory contains some source code for the Rust project, including:

  • The bootstrapping build system
  • Various submodules for tools, like cargo, tidy, etc.

For more information on how various parts of the compiler work, see the rustc dev guide.