Auto merge of rust-lang#140357 - onur-ozkan:133840, r=<try>

bypass linker configuration and cross target check on `x check`

I was going to handle this using the untracked env approach, but I realized it somehow doesn't regress rust-lang#130108 anymore...

Anyway, if it works, it works. 😄 No need to dig deeper but my guess is we moved some cache-invalidating env from these functions to others.

Fixes rust-lang#133840

try-job: aarch64-apple

Author: bors

src/bootstrap/src/core/builder/cargo.rs

@@ -112,9 +112,8 @@ impl Cargo {
         let mut cargo = builder.cargo(compiler, mode, source_type, target, cmd_kind);
 
         match cmd_kind {
-            // No need to configure the target linker for these command types,
-            // as they don't invoke rustc at all.
-            Kind::Clean | Kind::Suggest | Kind::Format | Kind::Setup => {}
+            // No need to configure the target linker for these command types.
+            Kind::Clean | Kind::Check | Kind::Suggest | Kind::Format | Kind::Setup => {}
             _ => {
                 cargo.configure_linker(builder);
             }
@@ -205,6 +204,8 @@ impl Cargo {
         self
     }
 
+    // FIXME(onur-ozkan): Add coverage to make sure modifications to this function
+    // doesn't cause cache invalidations (e.g., #130108).
     fn configure_linker(&mut self, builder: &Builder<'_>) -> &mut Cargo {
         let target = self.target;
         let compiler = self.compiler;

src/bootstrap/src/utils/cc_detect.rs

@@ -96,6 +96,7 @@ pub fn find(build: &Build) {
     let targets: HashSet<_> = match build.config.cmd {
         // We don't need to check cross targets for these commands.
         crate::Subcommand::Clean { .. }
+        | crate::Subcommand::Check { .. }
         | crate::Subcommand::Suggest { .. }
         | crate::Subcommand::Format { .. }
         | crate::Subcommand::Setup { .. } => {

src/bootstrap/src/utils/cc_detect/tests.rs

@@ -181,7 +181,7 @@ fn test_language_clang() {
 
 #[test]
 fn test_new_cc_build() {
-    let build = Build::new(Config { ..Config::parse(Flags::parse(&["check".to_owned()])) });
+    let build = Build::new(Config { ..Config::parse(Flags::parse(&["build".to_owned()])) });
     let target = TargetSelection::from_user("x86_64-unknown-linux-gnu");
     let cfg = new_cc_build(&build, target.clone());
     let compiler = cfg.get_compiler();
@@ -190,7 +190,7 @@ fn test_new_cc_build() {
 
 #[test]
 fn test_default_compiler_wasi() {
-    let build = Build::new(Config { ..Config::parse(Flags::parse(&["check".to_owned()])) });
+    let build = Build::new(Config { ..Config::parse(Flags::parse(&["build".to_owned()])) });
     let target = TargetSelection::from_user("wasm32-wasi");
     let wasi_sdk = PathBuf::from("/wasi-sdk");
     // SAFETY: bootstrap tests run on a single thread
@@ -215,7 +215,7 @@ fn test_default_compiler_wasi() {
 
 #[test]
 fn test_default_compiler_fallback() {
-    let build = Build::new(Config { ..Config::parse(Flags::parse(&["check".to_owned()])) });
+    let build = Build::new(Config { ..Config::parse(Flags::parse(&["build".to_owned()])) });
     let target = TargetSelection::from_user("x86_64-unknown-linux-gnu");
     let mut cfg = cc::Build::new();
     let result = default_compiler(&mut cfg, Language::C, target, &build);
@@ -224,7 +224,7 @@ fn test_default_compiler_fallback() {
 
 #[test]
 fn test_find_target_with_config() {
-    let mut build = Build::new(Config { ..Config::parse(Flags::parse(&["check".to_owned()])) });
+    let mut build = Build::new(Config { ..Config::parse(Flags::parse(&["build".to_owned()])) });
     let target = TargetSelection::from_user("x86_64-unknown-linux-gnu");
     let mut target_config = Target::default();
     target_config.cc = Some(PathBuf::from("dummy-cc"));
@@ -249,7 +249,7 @@ fn test_find_target_with_config() {
 
 #[test]
 fn test_find_target_without_config() {
-    let mut build = Build::new(Config { ..Config::parse(Flags::parse(&["check".to_owned()])) });
+    let mut build = Build::new(Config { ..Config::parse(Flags::parse(&["build".to_owned()])) });
     let target = TargetSelection::from_user("x86_64-unknown-linux-gnu");
     build.config.target_config.clear();
     find_target(&build, target.clone());
@@ -262,7 +262,7 @@ fn test_find_target_without_config() {
 
 #[test]
 fn test_find() {
-    let mut build = Build::new(Config { ..Config::parse(Flags::parse(&["check".to_owned()])) });
+    let mut build = Build::new(Config { ..Config::parse(Flags::parse(&["build".to_owned()])) });
     let target1 = TargetSelection::from_user("x86_64-unknown-linux-gnu");
     let target2 = TargetSelection::from_user("x86_64-unknown-openbsd");
     build.targets.push(target1.clone());