Better error message when TARGET is missing

2019-04-19 12:23:30 +02:00
parent 173dd11427
commit 4d46b98b81
1 changed files with 3 additions and 1 deletions
--- a/library/stdarch/crates/simd-test-macro/src/lib.rs
+++ b/library/stdarch/crates/simd-test-macro/src/lib.rs
@@ -55,7 +55,9 @@ pub fn simd_test(
        .parse()
        .unwrap_or_else(|_| panic!("failed to parse name: {}", name.to_string()));

-    let target = env::var("TARGET").expect("TARGET environment variable should be set for rustc");
+    let target = env::var("TARGET").expect(
+        "TARGET environment variable should be set for rustc (e.g. TARGET=x86_64-apple-darwin cargo test)"
+    );
    let mut force_test = false;
    let macro_test = match target
        .split('-')