Auto merge of rust-lang#138597 - Kobzol:git-ci-beta, r=<try>

[do not merge] beta test for git change detection (rust-lang#138591)

Opening to test CI/bootstrap changes from rust-lang#138591.

r? `@ghost`

try-job: x86_64-gnu-stable
try-job: x86_64-gnu
try-job: x86_64-gnu-llvm-19-1
try-job: dist-x86_64-linux

Author: bors

Cargo.lock

@@ -317,6 +317,7 @@ version = "0.1.0"
 dependencies = [
  "serde",
  "serde_derive",
+ "tempfile",
 ]
 
 [[package]]
@@ -2135,6 +2136,12 @@ version = "0.4.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d26c52dbd32dccf2d10cac7725f8eae5296885fb5703b261f7d0a0739ec807ab"
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe7db12097d22ec582439daf8618b8fdd1a7bef6270e9af3b1ebcd30893cf413"
+
 [[package]]
 name = "litemap"
 version = "0.7.4"
@@ -4832,7 +4839,20 @@ dependencies = [
  "bitflags",
  "errno",
  "libc",
- "linux-raw-sys",
+ "linux-raw-sys 0.4.15",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "rustix"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7178faa4b75a30e269c71e61c353ce2748cf3d76f0c44c393f4e60abf49b825"
+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys 0.9.3",
  "windows-sys 0.59.0",
 ]
 
@@ -5246,15 +5266,14 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.15.0"
+version = "3.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a8a559c81686f576e8cd0290cd2a24a2a9ad80c98b3478856500fcbd7acd704"
+checksum = "488960f40a3fd53d72c2a29a58722561dee8afdd175bd88e3db4677d7b2ba600"
 dependencies = [
- "cfg-if",
  "fastrand",
- "getrandom 0.2.15",
+ "getrandom 0.3.1",
  "once_cell",
- "rustix",
+ "rustix 1.0.2",
  "windows-sys 0.59.0",
 ]
 
@@ -6599,8 +6618,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e105d177a3871454f754b33bb0ee637ecaaac997446375fd3e5d43a2ed00c909"
 dependencies = [
  "libc",
- "linux-raw-sys",
- "rustix",
+ "linux-raw-sys 0.4.15",
+ "rustix 0.38.43",
 ]
 
 [[package]]

config.example.toml

@@ -163,6 +163,16 @@
 # Custom CMake defines to set when building LLVM.
 #build-config = {}
 
+# =============================================================================
+# Tweaking how GCC is compiled
+# =============================================================================
+[gcc]
+# Download GCC from CI instead of building it locally.
+# Note that this will attempt to download GCC even if there are local
+# modifications to the `src/gcc` submodule.
+# Currently, this is only supported for the `x86_64-unknown-linux-gnu` target.
+# download-ci-gcc = false
+
 # =============================================================================
 # General build configuration options
 # =============================================================================

license-metadata.json

@@ -13,7 +13,8 @@
                         "directories": [],
                         "files": [
                           "analyzer-decls.h",
-                          "malloc-macro.h"
+                          "malloc-macro.h",
+                          "sarif-path-role.h"
                         ],
                         "license": {
                           "copyright": [

src/bootstrap/Cargo.lock

@@ -225,12 +225,12 @@ dependencies = [
 
 [[package]]
 name = "errno"
-version = "0.3.9"
+version = "0.3.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "534c5cf6194dfab3db3242765c03bbe257cf92f22b38f6bc0c58d59108a820ba"
+checksum = "33d852cb9b869c2a9b3df2f71a3074817f01e1844f839a144f5fcef059a4eb5d"
 dependencies = [
  "libc",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -334,9 +334,9 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "libc"
-version = "0.2.167"
+version = "0.2.171"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09d6582e104315a817dff97f75133544b2e094ee22447d2acf4a74e189ba06fc"
+checksum = "c19937216e9d3aa9956d9bb8dfc0b0c8beb6058fc4f7a4dc4d850edf86a237d6"
 
 [[package]]
 name = "libredox"

src/bootstrap/download-ci-gcc-stamp

@@ -0,0 +1,4 @@
+Change this file to make users of the `download-ci-gcc` configuration download
+a new version of GCC from CI, even if the GCC submodule hasn’t changed.
+
+Last change is for: https://github.com/rust-lang/rust/pull/138051

src/bootstrap/src/core/build_steps/compile.rs

@@ -17,6 +17,7 @@ use std::{env, fs, str};
 
 use serde_derive::Deserialize;
 
+use crate::core::build_steps::gcc::{Gcc, add_cg_gcc_cargo_flags};
 use crate::core::build_steps::tool::SourceType;
 use crate::core::build_steps::{dist, llvm};
 use crate::core::builder;
@@ -30,7 +31,7 @@ use crate::utils::exec::command;
 use crate::utils::helpers::{
     exe, get_clang_cl_resource_dir, is_debug_info, is_dylib, symlink_dir, t, up_to_date,
 };
-use crate::{CLang, Compiler, DependencyType, GitRepo, LLVM_TOOLS, Mode};
+use crate::{CLang, Compiler, DependencyType, GitRepo, LLVM_TOOLS, Mode, trace};
 
 #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct Std {
@@ -107,7 +108,11 @@ impl Step for Std {
         // the `rust.download-rustc=true` option.
         let force_recompile = builder.rust_info().is_managed_git_subrepository()
             && builder.download_rustc()
-            && builder.config.last_modified_commit(&["library"], "download-rustc", true).is_none();
+            && builder.config.has_changes_from_upstream(&["library"]);
+
+        trace!("is managed git repo: {}", builder.rust_info().is_managed_git_subrepository());
+        trace!("download_rustc: {}", builder.download_rustc());
+        trace!(force_recompile);
 
         run.builder.ensure(Std {
             compiler: run.builder.compiler(run.builder.top_stage, run.build_triple()),
@@ -1500,6 +1505,14 @@ impl Step for CodegenBackend {
             .arg(builder.src.join(format!("compiler/rustc_codegen_{backend}/Cargo.toml")));
         rustc_cargo_env(builder, &mut cargo, target, compiler.stage);
 
+        // Ideally, we'd have a separate step for the individual codegen backends,
+        // like we have in tests (test::CodegenGCC) but that would require a lot of restructuring.
+        // If the logic gets more complicated, it should probably be done.
+        if backend == "gcc" {
+            let gcc = builder.ensure(Gcc { target });
+            add_cg_gcc_cargo_flags(&mut cargo, &gcc);
+        }
+
         let tmp_stamp = BuildStamp::new(&out_dir).with_prefix("tmp");
 
         let _guard = builder.msg_build(compiler, format_args!("codegen backend {backend}"), target);

src/bootstrap/src/core/build_steps/dist.rs

@@ -2450,3 +2450,30 @@ impl Step for ReproducibleArtifacts {
         if added_anything { Some(tarball.generate()) } else { None }
     }
 }
+
+/// Tarball containing a prebuilt version of the libgccjit library,
+/// needed as a dependency for the GCC codegen backend (similarly to the LLVM
+/// backend needing a prebuilt libLLVM).
+#[derive(Clone, Debug, Eq, Hash, PartialEq)]
+pub struct Gcc {
+    pub target: TargetSelection,
+}
+
+impl Step for Gcc {
+    type Output = GeneratedTarball;
+
+    fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
+        run.alias("gcc")
+    }
+
+    fn make_run(run: RunConfig<'_>) {
+        run.builder.ensure(Gcc { target: run.target });
+    }
+
+    fn run(self, builder: &Builder<'_>) -> Self::Output {
+        let tarball = Tarball::new(builder, "gcc", &self.target.triple);
+        let output = builder.ensure(super::gcc::Gcc { target: self.target });
+        tarball.add_file(output.libgccjit, "lib", 0o644);
+        tarball.generate()
+    }
+}

src/bootstrap/src/core/build_steps/format.rs

@@ -94,7 +94,7 @@ fn get_modified_rs_files(build: &Builder<'_>) -> Result<Option<Vec<String>>, Str
         return Ok(None);
     }
 
-    get_git_modified_files(&build.config.git_config(), Some(&build.config.src), &["rs"])
+    get_git_modified_files(&build.config.git_config(), Some(&build.config.src), &["rs"]).map(Some)
 }
 
 #[derive(serde_derive::Deserialize)]