Don't needlessly build rustdoc for compiletest.

For most tests, rustdoc isn't needed, so avoid building it.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/bootstrap/check.rs b/src/bootstrap/check.rs
index 3b3b062b151..df15cbc9314 100644
--- a/src/bootstrap/check.rs
+++ b/src/bootstrap/check.rs
@@ -562,7 +562,12 @@ impl Step for Compiletest {
         cmd.arg("--compile-lib-path").arg(builder.rustc_libdir(compiler));
         cmd.arg("--run-lib-path").arg(builder.sysroot_libdir(compiler, target));
         cmd.arg("--rustc-path").arg(builder.rustc(compiler));
-        cmd.arg("--rustdoc-path").arg(builder.rustdoc(compiler));
+
+        // Avoid depending on rustdoc when we don't need it.
+        if mode == "rustdoc" || mode == "run-make" {
+            cmd.arg("--rustdoc-path").arg(builder.rustdoc(compiler));
+        }
+
         cmd.arg("--src-base").arg(build.src.join("src/test").join(suite));
         cmd.arg("--build-base").arg(testdir(build, compiler.host).join(suite));
         cmd.arg("--stage-id").arg(format!("stage{}-{}", compiler.stage, target));