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-rw-r--r--src/libunwind/build.rs2
1 files changed, 0 insertions, 2 deletions
diff --git a/src/libunwind/build.rs b/src/libunwind/build.rs
index db41a368a16..f18b694d3d0 100644
--- a/src/libunwind/build.rs
+++ b/src/libunwind/build.rs
@@ -11,8 +11,6 @@
 use std::env;
 
 fn main() {
-    println!("cargo:rustc-cfg=cargobuild");
-
     let target = env::var("TARGET").expect("TARGET was not set");
 
     if target.contains("linux") {