Reenable run-make tests

.github/workflows/ci.yml

@@ -12,6 +12,8 @@ permissions:
 env:
   # Enable backtraces for easier debugging
   RUST_BACKTRACE: 1
+  # For the run-make tests.
+  LLVM_BIN_DIR: /usr/bin
 
 jobs:
   build:
@@ -48,7 +50,7 @@ jobs:
 
     - name: Install packages
       # `llvm-14-tools` is needed to install the `FileCheck` binary which is used for asm tests.
-      run: sudo apt-get install ninja-build ripgrep llvm-14-tools
+      run: sudo apt-get install ninja-build ripgrep llvm-14-tools llvm
 
     - name: Install rustfmt & clippy
       run: rustup component add rustfmt clippy
@@ -61,6 +63,12 @@ jobs:
           sudo dpkg --force-overwrite -i ${{ matrix.libgccjit_version.gcc }}
           echo 'gcc-path = "/usr/lib/"' > config.toml
 
+    # Some run-make tests fail if we use our forked GCC because it doesn't
+    # bundle libstdc++, so we switch to gcc-14 to have a GCC that has
+    # libstdc++.
+    - name: Set default GCC to gcc-14
+      run: sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc-14 30
+
     - name: Set env
       run: |
         echo "workspace="$GITHUB_WORKSPACE >> $GITHUB_ENV

.github/workflows/release.yml

@@ -12,6 +12,8 @@ permissions:
 env:
   # Enable backtraces for easier debugging
   RUST_BACKTRACE: 1
+  # For the run-make tests.
+  LLVM_BIN_DIR: /usr/bin
 
 jobs:
   build:
@@ -36,7 +38,8 @@ jobs:
       uses: Swatinem/rust-cache@v2
 
     - name: Install packages
-      run: sudo apt-get install ninja-build ripgrep
+      # `llvm-14-tools` is needed to install the `FileCheck` binary which is used for run-make tests.
+      run: sudo apt-get install ninja-build ripgrep llvm-14-tools llvm
 
     - name: Download artifact
       run: curl -LO https://github.com/rust-lang/gcc/releases/latest/download/gcc-15.deb
@@ -46,11 +49,15 @@ jobs:
           sudo dpkg --force-overwrite -i gcc-15.deb
           echo 'gcc-path = "/usr/lib/"' > config.toml
 
+    # Some run-make tests fail if we use our forked GCC because it doesn't
+    # bundle libstdc++, so we switch to gcc-14 to have a GCC that has
+    # libstdc++.
+    - name: Set default GCC to gcc-14
+      run: sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc-14 30
+
     - name: Set env
       run: |
         echo "workspace="$GITHUB_WORKSPACE >> $GITHUB_ENV
-
-
 
     - name: Build
       run: |

build_system/src/test.rs

@@ -9,8 +9,8 @@ use crate::build;
 use crate::config::{Channel, ConfigInfo};
 use crate::utils::{
     create_dir, get_sysroot_dir, get_toolchain, git_clone, git_clone_root_dir, remove_file,
-    run_command, run_command_with_env, run_command_with_output_and_env, rustc_version_info,
-    split_args, walk_dir,
+    run_command, run_command_with_env, run_command_with_output, run_command_with_output_and_env,
+    rustc_version_info, split_args, walk_dir,
 };
 
 type Env = HashMap<String, String>;
@@ -484,6 +484,31 @@ fn setup_rustc(env: &mut Env, args: &TestArg) -> Result<PathBuf, String> {
     } else {
         run_command_with_output_and_env(&[&"git", &"checkout"], rust_dir, Some(env))?;
     }
+
+    let mut patches = Vec::new();
+    walk_dir(
+        "patches/tests",
+        &mut |_| Ok(()),
+        &mut |file_path: &Path| {
+            patches.push(file_path.to_path_buf());
+            Ok(())
+        },
+        false,
+    )?;
+    patches.sort();
+    // TODO: remove duplication with prepare.rs by creating a apply_patch function in the utils
+    // module.
+    for file_path in patches {
+        println!("[GIT] apply `{}`", file_path.display());
+        let path = Path::new("../..").join(file_path);
+        run_command_with_output(&[&"git", &"apply", &path], rust_dir)?;
+        run_command_with_output(&[&"git", &"add", &"-A"], rust_dir)?;
+        run_command_with_output(
+            &[&"git", &"commit", &"--no-gpg-sign", &"-m", &format!("Patch {}", path.display())],
+            rust_dir,
+        )?;
+    }
+
     let cargo = String::from_utf8(
         run_command_with_env(&[&"rustup", &"which", &"cargo"], rust_dir, Some(env))?.stdout,
     )
@@ -509,14 +534,17 @@ fn setup_rustc(env: &mut Env, args: &TestArg) -> Result<PathBuf, String> {
           which FileCheck-11 || \
           which FileCheck-12 || \
           which FileCheck-13 || \
-          which FileCheck-14",
+          which FileCheck-14 || \
+          which FileCheck",
         ],
         rust_dir,
         Some(env),
     ) {
         Ok(cmd) => String::from_utf8_lossy(&cmd.stdout).to_string(),
         Err(_) => {
             eprintln!("Failed to retrieve LLVM FileCheck, ignoring...");
+            // FIXME: the test tests/run-make/no-builtins-attribute will fail if we cannot find
+            // FileCheck.
             String::new()
         }
     };
@@ -1089,19 +1117,18 @@ where
 }
 
 fn test_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
-    //test_rustc_inner(env, args, |_| Ok(false), false, "run-make")?;
+    test_rustc_inner(env, args, |_| Ok(false), false, "run-make")?;
     test_rustc_inner(env, args, |_| Ok(false), false, "ui")
 }
 
 fn test_failing_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
-    let result1 = Ok(());
-    /*test_rustc_inner(
+    let result1 = test_rustc_inner(
         env,
         args,
         retain_files_callback("tests/failing-run-make-tests.txt", "run-make"),
         false,
         "run-make",
-    )*/
+    );
 
     let result2 = test_rustc_inner(
         env,
@@ -1122,14 +1149,13 @@ fn test_successful_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
         false,
         "ui",
     )?;
-    Ok(())
-    /*test_rustc_inner(
+    test_rustc_inner(
         env,
         args,
         remove_files_callback("tests/failing-run-make-tests.txt", "run-make"),
         false,
         "run-make",
-    )*/
+    )
 }
 
 fn test_failing_ui_pattern_tests(env: &Env, args: &TestArg) -> Result<(), String> {

patches/tests/0001-Workaround-to-make-a-run-make-test-pass.patch

@@ -0,0 +1,25 @@
+From a131c69e54b5c02fe3b517e8f3ad23d4f784ffc8 Mon Sep 17 00:00:00 2001
+From: Antoni Boucher <[email protected]>
+Date: Fri, 13 Jun 2025 20:25:33 -0400
+Subject: [PATCH] Workaround to make a run-make test pass
+
+---
+ tests/run-make/linker-warning/rmake.rs | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tests/run-make/linker-warning/rmake.rs b/tests/run-make/linker-warning/rmake.rs
+index bc21739fefc..0946a7e2a48 100644
+--- a/tests/run-make/linker-warning/rmake.rs
++++ b/tests/run-make/linker-warning/rmake.rs
+@@ -55,7 +55,7 @@ fn main() {
+         diff()
+             .expected_file("short-error.txt")
+             .actual_text("(linker error)", out.stderr())
+-            .normalize(r#"/rustc[^/]*/"#, "/rustc/")
++            .normalize(r#"/tmp/rustc[^/]*/"#, "/tmp/rustc/")
+             .normalize(
+                 regex::escape(run_make_support::build_root().to_str().unwrap()),
+                 "/build-root",
+-- 
+2.49.0
+