Rebuild on changes to the deployment target when compiling Apple targets by madsmtm · Pull Request #129342 · rust-lang/rust

madsmtm · 2024-08-21T02:13:37Z

Rebuild, both in Cargo and the incremental cache, when the *_DEPLOYMENT_TARGET environment variables change.

Fixes #118204. See #129432 for more motivation behind this change.

I am a bit unsure if I have implemented this correctly, I'm particularly uncertain whether creating a new field in Options the correct approach for busting the incremental cache? It's only the codegen that needs to be re-run, everything before that shouldn't be influenced by this, so if there's a way to make that happen, we should do that instead.

Builds upon #130068.

r? thomcc

CC @BlackHoleFox
@rustbot blocked

jieyouxu · 2024-08-21T06:06:29Z

I'd also like some input on how to add a test for these kinds of incremental compilation changes?

If the incremental test suite doesn't suit your needs, you could fallback to a run-make test if needed.

madsmtm · 2024-08-21T13:26:05Z

I'd also like some input on how to add a test for these kinds of incremental compilation changes?

If the incremental test suite doesn't suit your needs, you could fallback to a run-make test if needed.

Thanks for the tip, I took a look at the incremental test suite, but ended up creating a run-make test instead. Note that this change is going to conflict with #128507, since I updated the test from in there.

jieyouxu · 2024-08-21T15:33:35Z

Note that this change is going to conflict with #128507, since I updated the test from in there.

I'll discuss this with @Oneirical, if this PR is updating the macos deployment test we might as well drop the port in #128507.

…g, r=petrochenkov Move versioned Apple LLVM targets from `rustc_target` to `rustc_codegen_ssa` Fully specified LLVM targets contain the OS version on macOS/iOS/tvOS/watchOS/visionOS, and this version depends on the deployment target environment variables like `MACOSX_DEPLOYMENT_TARGET`, `IPHONEOS_DEPLOYMENT_TARGET` etc. We would like to move this to later in the compilation pipeline, both because it feels impure to access environment variables when fetching target information, but mostly because we need access to more information from rust-lang#130883 to do rust-lang#118204. See also rust-lang#129342 (comment) for some discussion. The first and second commit does the actual refactor, it should be a non-functional change, the third commit adds diagnostics for invalid deployment targets, which are now possible to do because we have access to the session. Tested with the same commands as in rust-lang#130435. r? `@petrochenkov`

…g, r=petrochenkov Move versioned Apple LLVM targets from `rustc_target` to `rustc_codegen_ssa` Fully specified LLVM targets contain the OS version on macOS/iOS/tvOS/watchOS/visionOS, and this version depends on the deployment target environment variables like `MACOSX_DEPLOYMENT_TARGET`, `IPHONEOS_DEPLOYMENT_TARGET` etc. We would like to move this to later in the compilation pipeline, both because it feels impure to access environment variables when fetching target information, but mostly because we need access to more information from rust-lang#130883 to do rust-lang#118204. See also rust-lang#129342 (comment) for some discussion. The first and second commit does the actual refactor, it should be a non-functional change, the third commit adds diagnostics for invalid deployment targets, which are now possible to do because we have access to the session. Tested with the same commands as in rust-lang#130435. r? ```@petrochenkov```

…g, r=petrochenkov Move versioned Apple LLVM targets from `rustc_target` to `rustc_codegen_ssa` Fully specified LLVM targets contain the OS version on macOS/iOS/tvOS/watchOS/visionOS, and this version depends on the deployment target environment variables like `MACOSX_DEPLOYMENT_TARGET`, `IPHONEOS_DEPLOYMENT_TARGET` etc. We would like to move this to later in the compilation pipeline, both because it feels impure to access environment variables when fetching target information, but mostly because we need access to more information from rust-lang#130883 to do rust-lang#118204. See also rust-lang#129342 (comment) for some discussion. The first and second commit does the actual refactor, it should be a non-functional change, the third commit adds diagnostics for invalid deployment targets, which are now possible to do because we have access to the session. Tested with the same commands as in rust-lang#130435. r? ````@petrochenkov````

…g, r=petrochenkov Move versioned Apple LLVM targets from `rustc_target` to `rustc_codegen_ssa` Fully specified LLVM targets contain the OS version on macOS/iOS/tvOS/watchOS/visionOS, and this version depends on the deployment target environment variables like `MACOSX_DEPLOYMENT_TARGET`, `IPHONEOS_DEPLOYMENT_TARGET` etc. We would like to move this to later in the compilation pipeline, both because it feels impure to access environment variables when fetching target information, but mostly because we need access to more information from rust-lang#130883 to do rust-lang#118204. See also rust-lang#129342 (comment) for some discussion. The first and second commit does the actual refactor, it should be a non-functional change, the third commit adds diagnostics for invalid deployment targets, which are now possible to do because we have access to the session. Tested with the same commands as in rust-lang#130435. r? `````@petrochenkov`````

…g, r=petrochenkov Move versioned Apple LLVM targets from `rustc_target` to `rustc_codegen_ssa` Fully specified LLVM targets contain the OS version on macOS/iOS/tvOS/watchOS/visionOS, and this version depends on the deployment target environment variables like `MACOSX_DEPLOYMENT_TARGET`, `IPHONEOS_DEPLOYMENT_TARGET` etc. We would like to move this to later in the compilation pipeline, both because it feels impure to access environment variables when fetching target information, but mostly because we need access to more information from rust-lang#130883 to do rust-lang#118204. See also rust-lang#129342 (comment) for some discussion. The first and second commit does the actual refactor, it should be a non-functional change, the third commit adds diagnostics for invalid deployment targets, which are now possible to do because we have access to the session. Tested with the same commands as in rust-lang#130435. r? ``````@petrochenkov``````

Rollup merge of rust-lang#131037 - madsmtm:move-llvm-target-versioning, r=petrochenkov Move versioned Apple LLVM targets from `rustc_target` to `rustc_codegen_ssa` Fully specified LLVM targets contain the OS version on macOS/iOS/tvOS/watchOS/visionOS, and this version depends on the deployment target environment variables like `MACOSX_DEPLOYMENT_TARGET`, `IPHONEOS_DEPLOYMENT_TARGET` etc. We would like to move this to later in the compilation pipeline, both because it feels impure to access environment variables when fetching target information, but mostly because we need access to more information from rust-lang#130883 to do rust-lang#118204. See also rust-lang#129342 (comment) for some discussion. The first and second commit does the actual refactor, it should be a non-functional change, the third commit adds diagnostics for invalid deployment targets, which are now possible to do because we have access to the session. Tested with the same commands as in rust-lang#130435. r? ``````@petrochenkov``````

bors · 2024-11-02T11:33:05Z

☔ The latest upstream changes (presumably #132497) made this pull request unmergeable. Please resolve the merge conflicts.

Dylan-DPC · 2024-11-09T07:24:01Z

@madsmtm any updates on this? thanks

petrochenkov · 2024-11-10T16:39:32Z

This is currently blocked on #130883.
@rustbot blocked

Add environment variable query Generally, `rustc` prefers command-line arguments, but in some cases, an environment variable really is the most sensible option. We should make sure that this works properly with the compiler's change-tracking mechanisms, such that changing the relevant environment variable causes a rebuild. This PR is a first step forwards in doing that. Part of the work needed to do rust-lang#118204, see rust-lang#129342 for some discussion. r? `@petrochenkov`

Add environment variable query Generally, `rustc` prefers command-line arguments, but in some cases, an environment variable really is the most sensible option. We should make sure that this works properly with the compiler's change-tracking mechanisms, such that changing the relevant environment variable causes a rebuild. This PR is a first step forwards in doing that. Part of the work needed to do rust-lang#118204, see rust-lang#129342 for some discussion. r? ``@petrochenkov``

Rollup merge of rust-lang#130883 - madsmtm:env-var-query, r=petrochenkov Add environment variable query Generally, `rustc` prefers command-line arguments, but in some cases, an environment variable really is the most sensible option. We should make sure that this works properly with the compiler's change-tracking mechanisms, such that changing the relevant environment variable causes a rebuild. This PR is a first step forwards in doing that. Part of the work needed to do rust-lang#118204, see rust-lang#129342 for some discussion. r? ``@petrochenkov``

petrochenkov · 2025-04-14T11:43:39Z

#130883 has landed, unblocking.
@rustbot author

rustbot · 2025-04-14T11:43:43Z

Reminder, once the PR becomes ready for a review, use @rustbot ready.

Dylan-DPC · 2025-07-03T07:21:57Z

@madsmtm this is no longer blocked so any updates on this?

…ochenkov Move versioned Apple LLVM targets from `rustc_target` to `rustc_codegen_ssa` Fully specified LLVM targets contain the OS version on macOS/iOS/tvOS/watchOS/visionOS, and this version depends on the deployment target environment variables like `MACOSX_DEPLOYMENT_TARGET`, `IPHONEOS_DEPLOYMENT_TARGET` etc. We would like to move this to later in the compilation pipeline, both because it feels impure to access environment variables when fetching target information, but mostly because we need access to more information from rust-lang/rust#130883 to do rust-lang/rust#118204. See also rust-lang/rust#129342 (comment) for some discussion. The first and second commit does the actual refactor, it should be a non-functional change, the third commit adds diagnostics for invalid deployment targets, which are now possible to do because we have access to the session. Tested with the same commands as in rust-lang/rust#130435. r? ``````@petrochenkov``````

JohnCSimon · 2026-09-27T03:27:43Z

@madsmtm
Ping from triage: This has been open for a bit. I'm closing this as inactive, please reopen when you're ready to continue

@rustbot label: +S-inactive

rustbot assigned thomcc Aug 21, 2024

rustbot added O-apple Operating system: Apple / Darwin (macOS, iOS, tvOS, visionOS, watchOS) S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Aug 21, 2024

madsmtm mentioned this pull request Aug 21, 2024

Apple: Refactor deployment target version parsing #129341

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jieyouxu mentioned this pull request Aug 21, 2024

Migrate libtest-thread-limit run-make test to rmake #128507

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jieyouxu self-assigned this Aug 21, 2024

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madsmtm force-pushed the track-deployment-target branch from a45f61f to 41c0b45 Compare August 21, 2024 17:23

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madsmtm mentioned this pull request Aug 21, 2024

Fix default/minimum deployment target for Aarch64 simulator targets #129367

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madsmtm force-pushed the track-deployment-target branch from c945329 to 23bd0d5 Compare August 21, 2024 18:56

This was referenced Aug 21, 2024

Pass deployment target when linking with CC on Apple targets #129369

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Improve Xcode support madsmtm/objc2#459

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Apple deployment target, SDK root and SDK version #129432

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madsmtm mentioned this pull request Sep 29, 2024

Move versioned Apple LLVM targets from rustc_target to rustc_codegen_ssa #131037

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