Add aarch64-android testing

Updating to NDK 26d and API 21 revealed that the most recent emulator no
longer runs 32-bit devices at all. Indeed, Google stopped shipping
32-bit emulator images as of API level 31.

Since this architecture is more used, and current images no longer have
backcompat code for 32-bit code, testing aarch64 is both important for
enabling developers to ship apps that run on modern devices and to
future-proof us.

src/bootstrap/src/utils/change_tracker.rs

@@ -199,6 +199,7 @@ pub const CONFIG_CHANGE_HISTORY: &[ChangeInfo] = &[
         change_id: 126701,
         severity: ChangeSeverity::Warning,
         summary: "`llvm.lld` is enabled by default for the dist profile. If set to false, `lld` will not be included in the dist build.",
+    },
     ChangeInfo {
         change_id: 120593,
         severity: ChangeSeverity::Info,

src/ci/docker/host-x86_64/aarch64-android/Dockerfile

@@ -0,0 +1,41 @@
+FROM ubuntu:23.04
+
+ARG DEBIAN_FRONTEND=noninteractive
+COPY scripts/android-base-apt-get.sh /scripts/
+RUN sh /scripts/android-base-apt-get.sh
+
+COPY scripts/android-ndk.sh /scripts/
+RUN . /scripts/android-ndk.sh && \
+    download_ndk android-ndk-r26d-linux.zip
+
+RUN dpkg --add-architecture i386 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends \
+  libgl1-mesa-glx \
+  libpulse0 \
+  libstdc++6:i386 \
+  openjdk-8-jre-headless \
+  tzdata \
+  wget \
+  python3
+
+COPY scripts/android-sdk.sh /scripts/
+COPY scripts/android-sdk-manager.py /scripts/
+COPY host-x86_64/aarch64-android/android-sdk.lock /android/sdk/android-sdk.lock
+RUN /scripts/android-sdk.sh
+
+ENV PATH=$PATH:/android/sdk/emulator
+ENV PATH=$PATH:/android/sdk/tools
+ENV PATH=$PATH:/android/sdk/platform-tools
+
+ENV TARGETS=aarch64-linux-android
+
+ENV RUST_CONFIGURE_ARGS --android-ndk=/android/ndk/
+
+ENV SCRIPT python3 ../x.py --stage 2 test --host='' --target $TARGETS
+
+COPY scripts/sccache.sh /scripts/
+RUN sh /scripts/sccache.sh
+
+COPY scripts/android-start-emulator.sh /scripts/
+ENTRYPOINT ["/scripts/android-start-emulator.sh", "arm64-v8a", "auto"]

src/ci/docker/host-x86_64/aarch64-android/android-sdk.lock

@@ -0,0 +1,6 @@
+emulator emulator-linux_x64-12038310.zip fe7a96bf6fbe7b026555dd7f76b713f22a07ec8b
+patcher;v4 3534162-studio.sdk-patcher.zip 046699c5e2716ae11d77e0bad814f7f33fab261e
+platform-tools platform-tools_r34.0.5-linux.zip 96097475cf7b279fdd8f218f5d043ffe94104ec3
+platforms;android-21 android-21_r02.zip 53536556059bb29ae82f414fd2e14bc335a4eb4c
+system-images;android-21;default;arm64-v8a sys-img/android/arm64-v8a-21_r04.zip c4375f1b4b4cd21a8617660e25f621cedcbd8332
+tools sdk-tools-linux-4333796.zip 8c7c28554a32318461802c1291d76fccfafde054

src/ci/docker/host-x86_64/arm-android/Dockerfile

@@ -38,4 +38,4 @@ COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
 COPY scripts/android-start-emulator.sh /scripts/
-ENTRYPOINT ["/scripts/android-start-emulator.sh"]
+ENTRYPOINT ["/scripts/android-start-emulator.sh", "armeabi-v7a", "classic"]

src/ci/docker/scripts/android-start-emulator.sh

@@ -6,11 +6,9 @@ set -ex
 # emulator identify the system
 export SHELL=/bin/bash
 
-# Using the default qemu2 engine makes time::tests::since_epoch fails because
-# the emulator date is set to unix epoch (in armeabi-v7a-18 image). Using
-# classic engine the emulator starts with the current date and the tests run
-# fine. If another image is used, this need to be evaluated again.
-nohup nohup emulator @armeabi-v7a-18 \
-    -engine classic -no-window -partition-size 2047 0<&- &>/dev/null &
+nohup nohup emulator @$1-21 \
+    -engine $2 -no-window -no-audio -partition-size 2047 0<&- &>/dev/null &
+
+shift 2
 
 exec "$@"

src/ci/github-actions/jobs.yml

@@ -115,6 +115,9 @@ auto:
   - image: arm-android
     <<: *job-linux-4c
 
+  - image: aarch64-android
+    <<: *job-linux-8c
+
   - image: armhf-gnu
     <<: *job-linux-4c