Add Android NDK Vulkan validation layers libraries

Fix #10094

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

@@ -85,11 +85,13 @@ private static String createBuildFile(
     String ccToolchainSuiteTemplate = getTemplate("android_ndk_cc_toolchain_suite_template.txt");
     String ccToolchainTemplate = getTemplate("android_ndk_cc_toolchain_template.txt");
     String stlFilegroupTemplate = getTemplate("android_ndk_stl_filegroup_template.txt");
+    String vulkanValidationLayersTemplate = getTemplate("android_ndk_vulkan_validation_layers_template.txt");
     String miscLibrariesTemplate = getTemplate("android_ndk_misc_libraries_template.txt");
 
     StringBuilder ccToolchainSuites = new StringBuilder();
     StringBuilder ccToolchainRules = new StringBuilder();
     StringBuilder stlFilegroups = new StringBuilder();
+    StringBuilder vulkanValidationLayersRules = new StringBuilder();
     for (CrosstoolStlPair crosstoolStlPair : crosstools) {
 
       // Create the cc_toolchain_suite rule
@@ -131,6 +133,13 @@ private static String createBuildFile(
                 .replace("%name%", entry.getKey())
                 .replace("%fileGlobPattern%", entry.getValue()));
       }
+
+      // Create the Vulkan validation layers libraries
+      for (CToolchain toolchain : crosstool.getToolchainList()) {
+        vulkanValidationLayersRules.append(
+            vulkanValidationLayersTemplate.replace("%cpu%", toolchain.getTargetCpu()));
+      }
+
     }
 
     return buildFileTemplate
@@ -139,6 +148,7 @@ private static String createBuildFile(
         .replace("%ccToolchainSuites%", ccToolchainSuites)
         .replace("%ccToolchainRules%", ccToolchainRules)
         .replace("%stlFilegroups%", stlFilegroups)
+        .replace("%vulkanValidationLayers%", vulkanValidationLayers)
         .replace("%miscLibraries%", miscLibrariesTemplate);
   }
 

src/main/java/com/google/devtools/build/lib/bazel/rules/android/android_ndk_build_file_template.txt

@@ -52,6 +52,12 @@ alias(
 
 %stlFilegroups%
 
+################################################################
+# Vulkan validation layers libraries
+################################################################
+
+%vulkanValidationLayers%
+
 ################################################################
 # Miscellaneous runtime libraries
 ################################################################

src/main/java/com/google/devtools/build/lib/bazel/rules/android/android_ndk_vulkan_validation_layers_template.txt

@@ -0,0 +1,4 @@
+cc_library(
+    name = "vulkan_validation_layers_%cpu%",
+    srcs = glob(["ndk/sources/third_party/vulkan/src/build-android/jniLibs/%cpu%/libVkLayer_*.so"]),
+)