Assume non-git LLVM is fresh if the stamp file exists #64156
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Rustbuild usually writes the LLVM submodule commit in a stamp file, so we can avoid rebuilding it unnecessarily. However, for builds from a source tarball (non-git), we were assuming a rebuild is always needed. This can cause a lot of extra work if any environment like `CFLAGS` changed between steps like build and install, which are often separate in distro builds. Now we also write an empty stamp file if the git commit is unknown, and its presence is trusted to indicate that no rebuild is needed. An info message reports that this is happening, along with the stamp file path that can be deleted to force a rebuild anyway.
|
(rust_highfive has picked a reviewer for you, use r? to override) |
rust-highfive
added
the
S-waiting-on-review
|
@bors: r+ |
|
📌 Commit 53fe764 has been approved by |
bors
added
S-waiting-on-bors
Centril
added a commit
to Centril/rust
that referenced
this pull request
Sep 5, 2019
Assume non-git LLVM is fresh if the stamp file exists Rustbuild usually writes the LLVM submodule commit in a stamp file, so we can avoid rebuilding it unnecessarily. However, for builds from a source tarball (non-git), we were assuming a rebuild is always needed. This can cause a lot of extra work if any environment like `CFLAGS` changed between steps like build and install, which are often separate in distro builds. Now we also write an empty stamp file if the git commit is unknown, and its presence is trusted to indicate that no rebuild is needed. An info message reports that this is happening, along with the stamp file path that can be deleted to force a rebuild anyway. Fixes rust-lang#61206.
Centril
added a commit
to Centril/rust
that referenced
this pull request
Sep 5, 2019
Assume non-git LLVM is fresh if the stamp file exists Rustbuild usually writes the LLVM submodule commit in a stamp file, so we can avoid rebuilding it unnecessarily. However, for builds from a source tarball (non-git), we were assuming a rebuild is always needed. This can cause a lot of extra work if any environment like `CFLAGS` changed between steps like build and install, which are often separate in distro builds. Now we also write an empty stamp file if the git commit is unknown, and its presence is trusted to indicate that no rebuild is needed. An info message reports that this is happening, along with the stamp file path that can be deleted to force a rebuild anyway. Fixes rust-lang#61206.
bors
added a commit
that referenced
this pull request
Sep 5, 2019
Rollup of 5 pull requests Successful merges: - #63676 (Use wasi crate for Core API) - #64094 (Improve searching in rustdoc and add tests) - #64111 (or-patterns: Uniformly use `PatKind::Or` in AST & Fix/Cleanup resolve) - #64156 (Assume non-git LLVM is fresh if the stamp file exists) - #64175 (Fix invalid span generation when it should be div) Failed merges: - #63806 (Upgrade rand to 0.7) r? @ghost
Mark-Simulacrum
added a commit
to Mark-Simulacrum/rust
that referenced
this pull request
Sep 6, 2019
Assume non-git LLVM is fresh if the stamp file exists Rustbuild usually writes the LLVM submodule commit in a stamp file, so we can avoid rebuilding it unnecessarily. However, for builds from a source tarball (non-git), we were assuming a rebuild is always needed. This can cause a lot of extra work if any environment like `CFLAGS` changed between steps like build and install, which are often separate in distro builds. Now we also write an empty stamp file if the git commit is unknown, and its presence is trusted to indicate that no rebuild is needed. An info message reports that this is happening, along with the stamp file path that can be deleted to force a rebuild anyway. Fixes rust-lang#61206.
Centril
added a commit
to Centril/rust
that referenced
this pull request
Sep 6, 2019
Assume non-git LLVM is fresh if the stamp file exists Rustbuild usually writes the LLVM submodule commit in a stamp file, so we can avoid rebuilding it unnecessarily. However, for builds from a source tarball (non-git), we were assuming a rebuild is always needed. This can cause a lot of extra work if any environment like `CFLAGS` changed between steps like build and install, which are often separate in distro builds. Now we also write an empty stamp file if the git commit is unknown, and its presence is trusted to indicate that no rebuild is needed. An info message reports that this is happening, along with the stamp file path that can be deleted to force a rebuild anyway. Fixes rust-lang#61206.
bors
added a commit
that referenced
this pull request
Sep 6, 2019
Rollup of 10 pull requests Successful merges: - #63676 (Use wasi crate for Core API) - #64094 (Improve searching in rustdoc and add tests) - #64111 (or-patterns: Uniformly use `PatKind::Or` in AST & Fix/Cleanup resolve) - #64156 (Assume non-git LLVM is fresh if the stamp file exists) - #64161 (Point at variant on pattern field count mismatch) - #64174 (Add missing code examples on Iterator trait) - #64175 (Fix invalid span generation when it should be div) - #64186 (std: Improve downstream codegen in `Command::env`) - #64190 (fill metadata in rustc_lexer's Cargo.toml) - #64198 (Add Fuchsia to actually_monotonic) Failed merges: r? @ghost
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Rustbuild usually writes the LLVM submodule commit in a stamp file, so
we can avoid rebuilding it unnecessarily. However, for builds from a
source tarball (non-git), we were assuming a rebuild is always needed.
This can cause a lot of extra work if any environment like
CFLAGSchanged between steps like build and install, which are often separate
in distro builds.
Now we also write an empty stamp file if the git commit is unknown, and
its presence is trusted to indicate that no rebuild is needed. An info
message reports that this is happening, along with the stamp file path
that can be deleted to force a rebuild anyway.
Fixes #61206.