android: add support for x86_64 images (#31725)

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

.github/workflows/android.yml

@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        arch: ['armv7-linux-androideabi', 'i686-linux-android']
+        arch: ['armv7-linux-androideabi', 'i686-linux-android', 'x86_64-linux-android']
     steps:
       - uses: actions/checkout@v4
         if: github.event_name != 'issue_comment' && github.event_name != 'pull_request_target'

python/servo/command_base.py

@@ -588,6 +588,19 @@ class CommandBase(object):
         def to_ndk_bin(prog):
             return path.join(llvm_toolchain, "bin", prog)
 
+        # This workaround is due to an issue in the x86_64 Android NDK that introduces
+        # an undefined reference to the symbol '__extendsftf2'.
+        # See https://github.com/termux/termux-packages/issues/8029#issuecomment-1369150244
+        if "x86_64" in self.cross_compile_target:
+            libclangrt_filename = subprocess.run(
+                [to_ndk_bin(f"x86_64-linux-android{android_api}-clang"), "--print-libgcc-file-name"],
+                check=True,
+                capture_output=True,
+                encoding="utf8"
+            ).stdout
+            env['RUSTFLAGS'] = env.get('RUSTFLAGS', "")
+            env["RUSTFLAGS"] += f"-C link-arg={libclangrt_filename}"
+
         env["RUST_TARGET"] = self.cross_compile_target
         env['HOST_CC'] = host_cc
         env['HOST_CXX'] = host_cxx
@@ -912,6 +925,14 @@ class CommandBase(object):
             self.config["android"]["lib"] = "x86"
             self.config["android"]["toolchain_name"] = "i686-linux-android30"
             return True
+        elif target == "x86_64-linux-android":
+            self.config["android"]["platform"] = "android-30"
+            self.config["android"]["target"] = target
+            self.config["android"]["toolchain_prefix"] = target
+            self.config["android"]["arch"] = "x86_64"
+            self.config["android"]["lib"] = "x86_64"
+            self.config["android"]["toolchain_name"] = "x86_64-linux-android30"
+            return True
         return False
 
     def ensure_bootstrapped(self):

python/servo/package_commands.py

@@ -146,6 +146,8 @@ class PackageCommands(CommandBase):
                 arch_string = "Armv7"
             elif "i686" in android_target:
                 arch_string = "x86"
+            elif "x86_64" in android_target:
+                arch_string = "x64"
             else:
                 arch_string = "Arm"
 

support/android/apk/build.gradle

@@ -27,7 +27,8 @@ ext.getRustTarget = { String arch ->
     switch (arch.toLowerCase()) {
         case 'armv7' : return 'armv7-linux-androideabi'
         case 'arm64' : return 'aarch64-linux-android'
-        case 'x86' : return 'i686-linux-android'
+        case 'x86': return 'i686-linux-android'
+        case 'x64': return 'x86_64-linux-android'
         default: throw new GradleException("Invalid target architecture " + arch)
     }
 }
@@ -36,7 +37,8 @@ ext.getNDKAbi = { String arch ->
     switch (arch.toLowerCase()) {
         case 'armv7' : return 'armeabi-v7a'
         case 'arm64' : return 'arm64-v8a'
-        case 'x86' : return 'x86'
+        case 'x86': return 'x86'
+        case 'x64': return 'x86_64'
         default: throw new GradleException("Invalid target architecture " + arch)
     }
 }

support/android/apk/jni/Application.mk

@@ -2,4 +2,7 @@ NDK_TOOLCHAIN_VERSION := clang
 APP_MODULES := c++_shared servojni
 APP_PLATFORM := android-30
 APP_STL := c++_shared
-APP_ABI := armeabi-v7a x86
+APP_ABI := armeabi-v7a x86 x86_64
+ifeq ($(NDK_DEBUG),1)
+  APP_STRIP_MODE := none
+endif

support/android/apk/servoapp/build.gradle

@@ -97,6 +97,18 @@ android {
                 abiFilters getNDKAbi('x86')
             }
         }
+        x64Debug {
+            initWith(debug)
+            ndk {
+                abiFilters getNDKAbi('x64')
+            }
+        }
+        x64Release {
+            initWith(release)
+            ndk {
+                abiFilters getNDKAbi('x64')
+            }
+        }
     }
 
     // Ignore default 'debug' and 'release' build types

support/android/apk/servoview/build.gradle

@@ -76,6 +76,12 @@ android {
         x86Release {
             initWith(release)
         }
+        x64Debug {
+            initWith(debug)
+        }
+        x64Release {
+            initWith(release)
+        }
     }
 
     sourceSets {
@@ -99,6 +105,12 @@ android {
         x86Release {
             jniLibs.srcDirs = [getJniLibsPath(false, 'x86')]
         }
+        x64Debug {
+            jniLibs.srcDirs = [getJniLibsPath(true, 'x64')]
+        }
+        x64Release {
+            jniLibs.srcDirs = [getJniLibsPath(false, 'x64')]
+        }
     }
 
     // Ignore default 'debug' and 'release' build types
@@ -183,7 +195,7 @@ dependencies {
     ]
     // Iterate all build types and dependencies
     // For each dependency call the proper implementation command and set the correct dependency path
-    def list = ['armv7', 'arm64', 'x86']
+    def list = ['armv7', 'arm64', 'x86', 'x64']
     for (arch in list) {
         for (debug in [true, false]) {
             String basePath = getTargetDir(debug, arch) + "/build"