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Make LLVM version suffix independent of rustc version on dev channel

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Remove rustc version from LLVM version suffix on dev channel, avoiding
the need for full rebuilds when moving between commits with different
LLVM submodule & rustc version.
This commit is contained in:
Tomasz Miąsko 2020-04-05 00:00:00 +00:00
parent 39b62533c7
commit 7c5a4cdd66
2 changed files with 10 additions and 5 deletions
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5
config.toml.example
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@ -84,8 +84,9 @@
#link-shared = false
# When building llvm, this configures what is being appended to the version.
# If absent, we let the version as-is.
#version-suffix = "-rust"
# The default is "-rust-$version-$channel", except for dev channel where rustc
# version number is omitted. To use LLVM version as is, provide an empty string.
#version-suffix = "-rust-dev"
# On MSVC you can compile LLVM with clang-cl, but the test suite doesn't pass
# with clang-cl, so this is special in that it only compiles LLVM with clang-cl

10
src/bootstrap/native.rs
View File

@ -235,10 +235,14 @@ impl Step for Llvm {
if !suffix.is_empty() {
cfg.define("LLVM_VERSION_SUFFIX", suffix);
}
} else if builder.config.channel == "dev" {
// Changes to a version suffix require a complete rebuild of the LLVM.
// To avoid rebuilds during a time of version bump, don't include rustc
// release number on the dev channel.
cfg.define("LLVM_VERSION_SUFFIX", "-rust-dev");
} else {
let default_suffix =
format!("-rust-{}-{}", channel::CFG_RELEASE_NUM, builder.config.channel);
cfg.define("LLVM_VERSION_SUFFIX", default_suffix);
let suffix = format!("-rust-{}-{}", channel::CFG_RELEASE_NUM, builder.config.channel);
cfg.define("LLVM_VERSION_SUFFIX", suffix);
}
if let Some(ref linker) = builder.config.llvm_use_linker {