4 files changed, 4 insertions, 0 deletions
diff --git a/src/librustc_asan/build.rs b/src/librustc_asan/build.rs
index 3a80baa0485..cb7721affe7 100644
--- a/src/librustc_asan/build.rs
+++ b/src/librustc_asan/build.rs
@@ -32,4 +32,5 @@ fn main() {
             .build_target("asan")
             .build();
     }
+    println!("cargo:rerun-if-env-changed=LLVM_CONFIG");
 }
diff --git a/src/librustc_lsan/build.rs b/src/librustc_lsan/build.rs
index da53571a243..3d2ae480de6 100644
--- a/src/librustc_lsan/build.rs
+++ b/src/librustc_lsan/build.rs
@@ -32,4 +32,5 @@ fn main() {
             .build_target("lsan")
             .build();
     }
+    println!("cargo:rerun-if-env-changed=LLVM_CONFIG");
 }
diff --git a/src/librustc_msan/build.rs b/src/librustc_msan/build.rs
index dcadbe86966..7e2a82dd0ab 100644
--- a/src/librustc_msan/build.rs
+++ b/src/librustc_msan/build.rs
@@ -32,4 +32,5 @@ fn main() {
             .build_target("msan")
             .build();
     }
+    println!("cargo:rerun-if-env-changed=LLVM_CONFIG");
 }
diff --git a/src/librustc_tsan/build.rs b/src/librustc_tsan/build.rs
index 5ea52f17a0f..641d9c3647d 100644
--- a/src/librustc_tsan/build.rs
+++ b/src/librustc_tsan/build.rs
@@ -32,4 +32,5 @@ fn main() {
             .build_target("tsan")
             .build();
     }
+    println!("cargo:rerun-if-env-changed=LLVM_CONFIG");
 }