Add unstable `--print=supported-crate-types` option #138641

jieyouxu · 2025-03-18T05:48:01Z

MCP: rust-lang/compiler-team#836
Tracking issue: #138640

Test coverage

Two tests:

tests/ui/print-request/stability.rs to check that --print=supported-crate-types is -Zunstable-options-gated
tests/ui/print-request/supported-crate-types.rs is added as a basic smoke test. Observe that the compiler stdout corresponds to the below Example output section (e.g. proc-macro is unsupported on wasm32-unknown-unknown currently).

Example output

For `x86_64-unknown-linux-gnu`

Notice the presence of {c,}dylib and proc-macro:

bin
cdylib
dylib
lib
proc-macro
rlib
staticlib

For `wasm32-unknown-unknown`

Notice the absence of dylib and proc-macro:

bin
cdylib
lib
rlib
staticlib

For `x86_64-unknown-linux-musl`

Notice the absence of {c,}dylib but presence of proc-macro:

bin
lib
proc-macro
rlib
staticlib

Documentation

I added an entry in the unstable book's print request section to document this supported-crate-types print request.

Unresolved questions

(Name bikeshedding) is supported-crate-types a good name for the print request? I'm inclined to say it's good enough for an unstable print request, but may be worth revisiting at stabilization time.

Stability

This print request being added is unstable in this PR. A separate stabilization PR following the usual compiler flag stabilization procedure should be filed for stabilization after some baking time.

Review remarks

Best reviewed commit-by-commit.

r? compiler

jieyouxu · 2025-03-18T06:40:25Z

@rustbot ready

src/doc/rustc/src/command-line-arguments.md

weihanglo · 2025-03-21T02:08:45Z

Really looking forward to using this in Cargo. Thank you folks!

bors · 2025-03-21T02:59:56Z

☔ The latest upstream changes (presumably #138747) made this pull request unmergeable. Please resolve the merge conflicts.

jieyouxu · 2025-03-21T06:11:56Z

Reblessed tests due to extra help line.
@rustbot ready

jieyouxu · 2025-03-21T06:55:36Z

tests/ui/rustc-print-info-issue-138612.rs

-//@ check-fail
-//@ compile-flags: /dev/null --print lints


I was a bit confused by this test, it turns out we are checking for the -Whelp suggestion if the invalid print request --print=lints was specified.

jieyouxu · 2025-03-21T06:56:27Z

tests/ui/print-request/print-lints-help.rs

+//@ error-pattern: error: unknown print request: `lints`
+//@ error-pattern: help: use `-Whelp` to print a list of lints
+//@ error-pattern: help: for more information, see the rustc book


Ensure that the test intention can't be accidentally blessed away as easily.

Urgau

LGTM

Urgau · 2025-03-21T17:22:14Z

r? Urgau
@bors r+ rollup

bors · 2025-03-21T17:22:17Z

📌 Commit 405d1c4 has been approved by Urgau

It is now in the queue for this repository.

…es, r=Urgau Add unstable `--print=supported-crate-types` option MCP: rust-lang/compiler-team#836 Tracking issue: rust-lang#138640 ### Test coverage Two tests: 1. `tests/ui/print-request/stability.rs` to check that `--print=supported-crate-types` is `-Zunstable-options`-gated 2. `tests/ui/print-request/supported-crate-types.rs` is added as a basic smoke test. Observe that the compiler stdout corresponds to the below *Example output* section (e.g. `proc-macro` is unsupported on `wasm32-unknown-unknown` currently). ### Example output <details> <summary>For `x86_64-unknown-linux-gnu`</summary> Notice the presence of `{c,}dylib` and `proc-macro`: ``` bin cdylib dylib lib proc-macro rlib staticlib ``` </details> <details> <summary>For `wasm32-unknown-unknown`</summary> Notice the absence of `dylib` and `proc-macro`: ``` bin cdylib lib rlib staticlib ``` </details> <details> <summary>For `x86_64-unknown-linux-musl`</summary> Notice the absence of `{c,}dylib` but presence of `proc-macro`: ``` bin lib proc-macro rlib staticlib ``` </details> ### Documentation I added an entry in the unstable book's print request section to document this `supported-crate-types` print request. ### Unresolved questions - [ ] (Name bikeshedding) is `supported-crate-types` a good name for the print request? I'm inclined to say it's good enough for an unstable print request, but may be worth revisiting at stabilization time. ### Stability This print request being added is *unstable* in this PR. A separate stabilization PR following the usual compiler flag stabilization procedure should be filed for stabilization after some baking time. ### Review remarks Best reviewed commit-by-commit. r? compiler

Rollup of 9 pull requests Successful merges: - rust-lang#138236 (uefi: Add OwnedEvent abstraction) - rust-lang#138293 (rustdoc: Gate unstable `doc(cfg())` predicates) - rust-lang#138509 (Add test to ensure no index out of bounds panic (rust-lang#135474)) - rust-lang#138602 (Slim `rustc_parse_format` dependencies down) - rust-lang#138631 (Update test for SGX now implementing `read_buf`) - rust-lang#138641 (Add unstable `--print=supported-crate-types` option) - rust-lang#138662 (Implement some basics in UEFI fs) - rust-lang#138837 (resolve: Avoid remaining unstable iteration) - rust-lang#138849 (doc: rename reference #create-a-configtoml to #create-a-bootstraptoml) Failed merges: - rust-lang#138755 ([rustdoc] Remove duplicated loop when computing doc cfgs) r? `@ghost` `@rustbot` modify labels: rollup

matthiaskrgr · 2025-03-23T10:10:33Z

@bors r-
guess this failed here
#138853 (comment)

jieyouxu · 2025-03-23T11:06:35Z

Yes, it's because I wrote needs-llvm-components: wasm instead of needs-llvm-components: webassembly.

As an unstable print request.

- Document test intent to check for `-Whelp` suggestion if `--print=lints` was specified. - Move this test under `tests/ui/print-request/` and rename it to `print-lints-help.rs` to better reflect what it is checking.

jieyouxu · 2025-03-23T11:21:45Z

Fixed the llvm component name.
@bors r=Urgau

bors · 2025-03-23T11:21:47Z

📌 Commit f2cde8e has been approved by Urgau

It is now in the queue for this repository.

…mpiler-errors Rollup of 12 pull requests Successful merges: - rust-lang#136040 (Remove unused trait BoundedSize) - rust-lang#138236 (uefi: Add OwnedEvent abstraction) - rust-lang#138293 (rustdoc: Gate unstable `doc(cfg())` predicates) - rust-lang#138509 (Add test to ensure no index out of bounds panic (rust-lang#135474)) - rust-lang#138545 (Add MIR pre-codegen tests to track rust-lang#138544) - rust-lang#138631 (Update test for SGX now implementing `read_buf`) - rust-lang#138641 (Add unstable `--print=supported-crate-types` option) - rust-lang#138667 (std: uefi: fs: Implement mkdir) - rust-lang#138849 (doc: rename reference #create-a-configtoml to #create-a-bootstraptoml) - rust-lang#138854 (Fix ICE rust-lang#138415 for invalid extern function body) - rust-lang#138858 (Say which test failed the `COMPILETEST_REQUIRE_ALL_LLVM_COMPONENTS` assertion) - rust-lang#138861 (Tweak type flags, fix missing flags from coroutine kind ty) Failed merges: - rust-lang#138755 ([rustdoc] Remove duplicated loop when computing doc cfgs) r? `@ghost` `@rustbot` modify labels: rollup

Rollup merge of rust-lang#138641 - jieyouxu:print-supported-crate-types, r=Urgau Add unstable `--print=supported-crate-types` option MCP: rust-lang/compiler-team#836 Tracking issue: rust-lang#138640 ### Test coverage Two tests: 1. `tests/ui/print-request/stability.rs` to check that `--print=supported-crate-types` is `-Zunstable-options`-gated 2. `tests/ui/print-request/supported-crate-types.rs` is added as a basic smoke test. Observe that the compiler stdout corresponds to the below *Example output* section (e.g. `proc-macro` is unsupported on `wasm32-unknown-unknown` currently). ### Example output <details> <summary>For `x86_64-unknown-linux-gnu`</summary> Notice the presence of `{c,}dylib` and `proc-macro`: ``` bin cdylib dylib lib proc-macro rlib staticlib ``` </details> <details> <summary>For `wasm32-unknown-unknown`</summary> Notice the absence of `dylib` and `proc-macro`: ``` bin cdylib lib rlib staticlib ``` </details> <details> <summary>For `x86_64-unknown-linux-musl`</summary> Notice the absence of `{c,}dylib` but presence of `proc-macro`: ``` bin lib proc-macro rlib staticlib ``` </details> ### Documentation I added an entry in the unstable book's print request section to document this `supported-crate-types` print request. ### Unresolved questions - [ ] (Name bikeshedding) is `supported-crate-types` a good name for the print request? I'm inclined to say it's good enough for an unstable print request, but may be worth revisiting at stabilization time. ### Stability This print request being added is *unstable* in this PR. A separate stabilization PR following the usual compiler flag stabilization procedure should be filed for stabilization after some baking time. ### Review remarks Best reviewed commit-by-commit. r? compiler

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Tracking Issue for --print=supported-crate-types #138640

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jieyouxu force-pushed the print-supported-crate-types branch from 9448784 to ef06252 Compare March 18, 2025 06:53

jieyouxu added the A-print-requests Area: print requests (`--print=...`) label Mar 19, 2025

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jieyouxu mentioned this pull request Mar 23, 2025

Rollup of 9 pull requests #138853

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bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Mar 23, 2025

jieyouxu added 4 commits March 23, 2025 19:08

Implement supported-crate-types print request

0e7dbab

As an unstable print request.

Document supported-crate-types print request in unstable book

13530af

Rebless tests with changed help due to new print request option

f1b8d89

Adjust rustc-print-info-issue-138612.rs

f2cde8e

- Document test intent to check for `-Whelp` suggestion if `--print=lints` was specified. - Move this test under `tests/ui/print-request/` and rename it to `print-lints-help.rs` to better reflect what it is checking.

jieyouxu force-pushed the print-supported-crate-types branch from 405d1c4 to f2cde8e Compare March 23, 2025 11:21

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compiler-errors mentioned this pull request Mar 23, 2025

Rollup of 12 pull requests #138866

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bors merged commit 21cdebc into rust-lang:master Mar 24, 2025
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obi1kenobi mentioned this pull request Mar 24, 2025

Failure targeting wasm32-unknown-unknown obi1kenobi/cargo-semver-checks-action#98

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Add unstable `--print=supported-crate-types` option #138641

Add unstable `--print=supported-crate-types` option #138641

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Add unstable --print=supported-crate-types option #138641

Add unstable --print=supported-crate-types option #138641

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Test coverage

Example output

Documentation

Unresolved questions

Stability

Review remarks

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Add unstable `--print=supported-crate-types` option #138641

Add unstable `--print=supported-crate-types` option #138641

jieyouxu commented Mar 18, 2025 •

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