Only add symlinked proguard artifacts to filesBuilder when hasProguar…

…dSpecs is True.

Some proguard artifacts are always generated in Starlark regardless of whether `proguard_specs` is specified or not because some users use a select to provide an empty list for `proguard_specs` and it's impossible to tell what a select will produce when determining implicit outputs.  When `proguard_specs` turns out to be an empty list, these artifacts should not be requested by filesBuilder, otherwise the build fails.

PiperOrigin-RevId: 574710546
Change-Id: I45ea0144eaaa195e0c1d5f119eabb83aaba48c0f

src/main/java/com/google/devtools/build/lib/rules/android/AndroidBinary.java

@@ -650,6 +650,7 @@ public static RuleConfiguredTargetBuilder createAndroidBinary(
           javaSemantics,
           dataContext,
           filesBuilder,
+          hasProguardSpecs,
           proguardOutput,
           androidDexInfo.getFinalProguardOutputMap(),
           optimizationInfo.getOptimizedResourceApk(),
@@ -1087,6 +1088,7 @@ private static void symlinkOptimizationOutputs(
       JavaSemantics javaSemantics,
       AndroidDataContext dataContext,
       NestedSetBuilder<Artifact> filesBuilder,
+      boolean hasProguardSpecs,
       ProguardOutput proguardOutput,
       @Nullable Artifact finalProguardOutputMap,
       @Nullable Artifact optimizedResourceApk,
@@ -1106,7 +1108,10 @@ private static void symlinkOptimizationOutputs(
               proguardOutput.getOutputJar(),
               proguardedJar,
               "Symlinking proguard output jar"));
-      filesBuilder.add(proguardedJar);
+
+      if (hasProguardSpecs) {
+        filesBuilder.add(proguardedJar);
+      }
     }
 
     if (proguardOutput.getSeeds() != null) {
@@ -1118,7 +1123,10 @@ private static void symlinkOptimizationOutputs(
               proguardOutput.getSeeds(),
               proguardSeeds,
               "Symlinking proguard seeds"));
-      filesBuilder.add(proguardSeeds);
+
+      if (hasProguardSpecs) {
+        filesBuilder.add(proguardSeeds);
+      }
     }
 
     if (proguardOutput.getConfig() != null) {
@@ -1130,7 +1138,10 @@ private static void symlinkOptimizationOutputs(
               proguardOutput.getConfig(),
               proguardConfig,
               "Symlinking proguard config"));
-      filesBuilder.add(proguardConfig);
+
+      if (hasProguardSpecs) {
+        filesBuilder.add(proguardConfig);
+      }
     }
 
     if (proguardOutput.getUsage() != null) {
@@ -1142,7 +1153,10 @@ private static void symlinkOptimizationOutputs(
               proguardOutput.getUsage(),
               proguardUsage,
               "Symlinking proguard usage"));
-      filesBuilder.add(proguardUsage);
+
+      if (hasProguardSpecs) {
+        filesBuilder.add(proguardUsage);
+      }
     }
 
     if (proguardOutput.getProtoMapping() != null
@@ -1154,7 +1168,10 @@ private static void symlinkOptimizationOutputs(
               proguardOutput.getProtoMapping(),
               proguardProtoMapping,
               "Symlinking proguard proto mapping"));
-      filesBuilder.add(proguardProtoMapping);
+
+      if (hasProguardSpecs) {
+        filesBuilder.add(proguardProtoMapping);
+      }
     }
 
     // Conditionally select which output map to symlink. In the case where a select() resolves to
@@ -1173,7 +1190,10 @@ private static void symlinkOptimizationOutputs(
               outputMap,
               androidSemantics.getProguardOutputMap(ruleContext),
               "Symlinking final proguard output map"));
-      filesBuilder.add(androidSemantics.getProguardOutputMap(ruleContext));
+
+      if (hasProguardSpecs) {
+        filesBuilder.add(androidSemantics.getProguardOutputMap(ruleContext));
+      }
     }
 
     if (optimizedResourceApk != null) {