ci: Support Android x86_64 and optimize build caching. (#7045)

* android: Support x86_64 devices.

* ci: Improve ccache hits and stats.

* ci: Compress Android artifacts.

* ci: Re-enable PCH and set ccache sloppiness appropriately.

src/android/app/build.gradle.kts

@@ -2,20 +2,24 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-import android.databinding.tool.ext.capitalizeUS
-
 plugins {
     id("com.android.application")
     id("org.jetbrains.kotlin.android")
+    id("de.undercouch.download") version "5.5.0"
 }
 
+import android.databinding.tool.ext.capitalizeUS
+import de.undercouch.gradle.tasks.download.Download
+
 /**
  * Use the number of seconds/10 since Jan 1 2016 as the versionCode.
  * This lets us upload a new build at most every 10 seconds for the
  * next 680 years.
  */
 val autoVersion = (((System.currentTimeMillis() / 1000) - 1451606400) / 10).toInt()
-val abiFilter = listOf("arm64-v8a"/*, "x86", "x86_64"*/)
+val abiFilter = listOf("arm64-v8a", "x86_64")
+
+val downloadedJniLibsPath = "${buildDir}/downloadedJniLibs"
 
 @Suppress("UnstableApiUsage")
 android {
@@ -131,6 +135,13 @@ android {
             path = file("../../../CMakeLists.txt")
         }
     }
+
+    sourceSets {
+        named("main") {
+            // Set up path for downloaded native libraries
+            jniLibs.srcDir(downloadedJniLibsPath)
+        }
+    }
 }
 
 dependencies {
@@ -158,6 +169,30 @@ dependencies {
     implementation("com.android.billingclient:billing:2.0.3")
 }
 
+// Download Vulkan Validation Layers from the KhronosGroup GitHub.
+val downloadVulkanValidationLayers = tasks.register<Download>("downloadVulkanValidationLayers") {
+    src("https://github.com/KhronosGroup/Vulkan-ValidationLayers/releases/download/sdk-1.3.261.1/android-binaries-sdk-1.3.261.1-android.zip")
+    dest(file("${buildDir}/tmp/Vulkan-ValidationLayers.zip"))
+    onlyIfModified(true)
+}
+
+// Extract Vulkan Validation Layers into the downloaded native libraries directory.
+val unzipVulkanValidationLayers = tasks.register<Copy>("unzipVulkanValidationLayers") {
+    dependsOn(downloadVulkanValidationLayers)
+    from(zipTree(downloadVulkanValidationLayers.get().dest)) {
+        // Exclude the top level directory in the zip as it violates the expected jniLibs directory structure.
+        eachFile {
+            relativePath = RelativePath(true, *relativePath.segments.drop(1).toTypedArray())
+        }
+        includeEmptyDirs = false
+    }
+    into(downloadedJniLibsPath)
+}
+
+tasks.named("preBuild") {
+    dependsOn(unzipVulkanValidationLayers)
+}
+
 fun getGitVersion(): String {
     var versionName = "0.0"
 

src/android/app/src/main/jni/CMakeLists.txt

@@ -34,7 +34,11 @@ add_library(citra-android SHARED
     ndk_motion.h
 )
 
-target_link_libraries(citra-android PRIVATE audio_core citra_common citra_core input_common network adrenotools)
+target_link_libraries(citra-android PRIVATE audio_core citra_common citra_core input_common network)
 target_link_libraries(citra-android PRIVATE android camera2ndk EGL glad inih jnigraphics log mediandk yuv)
 
+if ("arm64" IN_LIST ARCHITECTURE)
+    target_link_libraries(citra-android PRIVATE adrenotools)
+endif()
+
 set(CPACK_PACKAGE_EXECUTABLES ${CPACK_PACKAGE_EXECUTABLES} citra-android)

src/android/app/src/main/jni/native.cpp

@@ -10,8 +10,12 @@
 #include <android/native_window_jni.h>
 
 #include "audio_core/dsp_interface.h"
-#include "common/aarch64/cpu_detect.h"
 #include "common/arch.h"
+#if CITRA_ARCH(arm64)
+#include "common/aarch64/cpu_detect.h"
+#elif CITRA_ARCH(x86_64)
+#include "common/x64/cpu_detect.h"
+#endif
 #include "common/common_paths.h"
 #include "common/dynamic_library/dynamic_library.h"
 #include "common/file_util.h"