1 files changed, 19 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/genrule/GenRuleBaseRule.java b/src/main/java/com/google/devtools/build/lib/rules/genrule/GenRuleBaseRule.java
index 544a03df21..d4cb75844f 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/genrule/GenRuleBaseRule.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/genrule/GenRuleBaseRule.java
@@ -37,6 +37,9 @@ import com.google.devtools.build.lib.packages.RuleClass.Builder.RuleClassType;
 import com.google.devtools.build.lib.rules.MakeVariableProvider;
 import com.google.devtools.build.lib.rules.cpp.CppConfiguration;
 import com.google.devtools.build.lib.rules.cpp.CppRuleClasses;
+import com.google.devtools.build.lib.rules.java.JavaImplicitAttributes;
+import com.google.devtools.build.lib.rules.java.JavaSemantics;
+import com.google.devtools.build.lib.rules.java.Jvm;
 import com.google.devtools.build.lib.syntax.Type;
 import com.google.devtools.build.lib.util.FileTypeSet;
 
@@ -63,6 +66,22 @@ public class GenRuleBaseRule implements RuleDefinition {
         }
       };
 
+  /**
+   * Late-bound dependency on the host JDK <i>iff</i> the genrule has make variables that need
+   * that rule.
+   */
+  public static final Attribute.LateBoundLabel<BuildConfiguration> HOST_JDK =
+      new Attribute.LateBoundLabel<BuildConfiguration>(
+          JavaImplicitAttributes.JDK_LABEL, Jvm.class) {
+        @Override
+        public Label resolve(Rule rule, AttributeMap attributes, BuildConfiguration configuration) {
+          return attributes != null
+              && GenRuleBase.requiresJdk(attributes.get("cmd", Type.STRING))
+              ? JavaSemantics.HOST_JDK.resolve(rule, attributes, configuration)
+              : null;
+        }
+      };
+
   @Override
   public RuleClass build(
       RuleClass.Builder builder, RuleDefinitionEnvironment env) {