Make the indirect dependency message show the correct label for external deps

Previously it would show the relative path within the external dep (e.g., in the
given test, "** Please add the following dependencies: x to //a:a").  Fixes
https://github.com/google/bazel/issues/112.

--
MOS_MIGRATED_REVID=91093258

1 files changed, 2 insertions, 1 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompileAction.java b/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompileAction.java
index 28bc1c98a8..572fcc112f 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompileAction.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/java/JavaCompileAction.java
@@ -646,7 +646,8 @@ public class JavaCompileAction extends AbstractAction {
       Label label = getTargetName(jar);
       builder.add(label.getPackageIdentifier().getRepository().isDefault()
           ? label.toString()
-          : label.toPathFragment().toString());
+          // Escape '@' prefix for .params file.
+          : "@" + label.toString());
     }
     return builder.build();
   }