Changes necessary for Starlark cc_library

Fixes tests for Starlark cc_library.

RELNOTES:none
PiperOrigin-RevId: 427944265

src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library/failing_targets/BUILD.builtin_test

@@ -96,11 +96,13 @@ cc_shared_library(
 
 cc_library(
     name = "d1",
+    srcs = ["empty.cc"],
     deps = ["d2"],
 )
 
 cc_library(
     name = "d2",
+    srcs = ["empty.cc"],
     deps = [
         "d3",
     ] + select({
@@ -111,4 +113,5 @@ cc_library(
 
 cc_library(
     name = "d3",
+    srcs = ["empty.cc"],
 )

src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library/failing_targets/empty.cc

@@ -0,0 +1,13 @@
+// Copyright 2022 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.