diff options
| -rw-r--r-- | src/bootstrap/config.rs | 36 | ||||
| -rw-r--r-- | src/bootstrap/native.rs | 83 | ||||
| -rw-r--r-- | src/bootstrap/util.rs | 4 |
3 files changed, 79 insertions, 44 deletions
diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs index dc0fd2bdc65..56a0c1b2d91 100644 --- a/src/bootstrap/config.rs +++ b/src/bootstrap/config.rs @@ -990,41 +990,7 @@ impl Config { config.llvm_from_ci = match llvm.download_ci_llvm { Some(StringOrBool::String(s)) => { assert!(s == "if-available", "unknown option `{}` for download-ci-llvm", s); - // This is currently all tier 1 targets and tier 2 targets with host tools - // (since others may not have CI artifacts) - // https://doc.rust-lang.org/rustc/platform-support.html#tier-1 - let supported_platforms = [ - // tier 1 - "aarch64-unknown-linux-gnu", - "i686-pc-windows-gnu", - "i686-pc-windows-msvc", - "i686-unknown-linux-gnu", - "x86_64-unknown-linux-gnu", - "x86_64-apple-darwin", - "x86_64-pc-windows-gnu", - "x86_64-pc-windows-msvc", - // tier 2 with host tools - "aarch64-apple-darwin", - "aarch64-pc-windows-msvc", - "aarch64-unknown-linux-musl", - "arm-unknown-linux-gnueabi", - "arm-unknown-linux-gnueabihf", - "armv7-unknown-linux-gnueabihf", - "mips-unknown-linux-gnu", - "mips64-unknown-linux-gnuabi64", - "mips64el-unknown-linux-gnuabi64", - "mipsel-unknown-linux-gnu", - "powerpc-unknown-linux-gnu", - "powerpc64-unknown-linux-gnu", - "powerpc64le-unknown-linux-gnu", - "riscv64gc-unknown-linux-gnu", - "s390x-unknown-linux-gnu", - "x86_64-unknown-freebsd", - "x86_64-unknown-illumos", - "x86_64-unknown-linux-musl", - "x86_64-unknown-netbsd", - ]; - supported_platforms.contains(&&*config.build.triple) + crate::native::is_ci_llvm_available(&config) } Some(StringOrBool::Bool(b)) => b, None => false, diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs index 1bba5e68be4..6a33b264015 100644 --- a/src/bootstrap/native.rs +++ b/src/bootstrap/native.rs @@ -114,23 +114,20 @@ pub fn prebuilt_llvm_config( Err(Meta { stamp, build_llvm_config, out_dir, root: root.into() }) } -pub(crate) fn maybe_download_ci_llvm(builder: &Builder<'_>) { - let config = &builder.config; - if !config.llvm_from_ci { - return; - } +/// This retrieves the LLVM sha we *want* to use, according to git history. +pub(crate) fn detect_llvm_sha(config: &crate::config::Config) -> String { let mut rev_list = config.git(); rev_list.args(&[ PathBuf::from("rev-list"), - format!("--author={}", builder.config.stage0_metadata.config.git_merge_commit_email).into(), + format!("--author={}", config.stage0_metadata.config.git_merge_commit_email).into(), "-n1".into(), "--first-parent".into(), "HEAD".into(), "--".into(), - builder.src.join("src/llvm-project"), - builder.src.join("src/bootstrap/download-ci-llvm-stamp"), + config.src.join("src/llvm-project"), + config.src.join("src/bootstrap/download-ci-llvm-stamp"), // the LLVM shared object file is named `LLVM-12-rust-{version}-nightly` - builder.src.join("src/version"), + config.src.join("src/version"), ]); let llvm_sha = output(&mut rev_list); let llvm_sha = llvm_sha.trim(); @@ -143,8 +140,76 @@ pub(crate) fn maybe_download_ci_llvm(builder: &Builder<'_>) { panic!(); } + llvm_sha.to_owned() +} + +/// Returns whether the CI-found LLVM is currently usable. +/// +/// This checks both the build triple platform to confirm we're usable at all, +/// and then verifies if the current HEAD matches the detected LLVM SHA head, +/// in which case LLVM is indicated as not available. +pub(crate) fn is_ci_llvm_available(config: &crate::config::Config) -> bool { + // This is currently all tier 1 targets and tier 2 targets with host tools + // (since others may not have CI artifacts) + // https://doc.rust-lang.org/rustc/platform-support.html#tier-1 + let supported_platforms = [ + // tier 1 + "aarch64-unknown-linux-gnu", + "i686-pc-windows-gnu", + "i686-pc-windows-msvc", + "i686-unknown-linux-gnu", + "x86_64-unknown-linux-gnu", + "x86_64-apple-darwin", + "x86_64-pc-windows-gnu", + "x86_64-pc-windows-msvc", + // tier 2 with host tools + "aarch64-apple-darwin", + "aarch64-pc-windows-msvc", + "aarch64-unknown-linux-musl", + "arm-unknown-linux-gnueabi", + "arm-unknown-linux-gnueabihf", + "armv7-unknown-linux-gnueabihf", + "mips-unknown-linux-gnu", + "mips64-unknown-linux-gnuabi64", + "mips64el-unknown-linux-gnuabi64", + "mipsel-unknown-linux-gnu", + "powerpc-unknown-linux-gnu", + "powerpc64-unknown-linux-gnu", + "powerpc64le-unknown-linux-gnu", + "riscv64gc-unknown-linux-gnu", + "s390x-unknown-linux-gnu", + "x86_64-unknown-freebsd", + "x86_64-unknown-illumos", + "x86_64-unknown-linux-musl", + "x86_64-unknown-netbsd", + ]; + if !supported_platforms.contains(&&*config.build.triple) { + return false; + } + + if crate::util::CiEnv::is_ci() { + let llvm_sha = detect_llvm_sha(config); + let head_sha = output(config.git().arg("rev-parse").arg("HEAD")); + let head_sha = head_sha.trim(); + if llvm_sha == head_sha { + eprintln!( + "Detected LLVM as non-available: running in CI and modified LLVM in this change" + ); + return false; + } + } + + true +} + +pub(crate) fn maybe_download_ci_llvm(builder: &Builder<'_>) { + let config = &builder.config; + if !config.llvm_from_ci { + return; + } let llvm_root = config.ci_llvm_root(); let llvm_stamp = llvm_root.join(".llvm-stamp"); + let llvm_sha = detect_llvm_sha(&config); let key = format!("{}{}", llvm_sha, config.llvm_assertions); if program_out_of_date(&llvm_stamp, &key) && !config.dry_run { download_ci_llvm(builder, &llvm_sha); diff --git a/src/bootstrap/util.rs b/src/bootstrap/util.rs index 1895e290148..3a00e258e00 100644 --- a/src/bootstrap/util.rs +++ b/src/bootstrap/util.rs @@ -258,6 +258,10 @@ impl CiEnv { } } + pub fn is_ci() -> bool { + Self::current() != CiEnv::None + } + /// If in a CI environment, forces the command to run with colors. pub fn force_coloring_in_ci(self, cmd: &mut Command) { if self != CiEnv::None { |