enable testing on Android x86_64

Currently, at the time of 2020/03/11, testing on AArch64 is not supported in the upstream repository

.gitignore

@@ -8,3 +8,7 @@ install/
 capi/
 api-docs/
 api-docs-repo/
+
+# Generated by tests on Android
+/avd
+/core

ci/README.md

@@ -0,0 +1,3 @@
+# About this directory
+
+This directory is originally copied from [rust-lang/libc/ci](https://github.com/rust-lang/libc/tree/master/ci).

ci/android-install-ndk.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env sh
+# Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+NDK=android-ndk-r19c
+curl --retry 20 -O https://dl.google.com/android/repository/${NDK}-linux-x86_64.zip
+unzip -q -d ndk ${NDK}-linux-x86_64.zip
+mv ./ndk/"$NDK"/* ./ndk/
+
+rm -rf ./${NDK}-linux-x86_64.zip

ci/android-install-sdk.sh

@@ -0,0 +1,73 @@
+#!/usr/bin/env sh
+# Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+# Prep the SDK and emulator
+#
+# Note that the update process requires that we accept a bunch of licenses, and
+# we can't just pipe `yes` into it for some reason, so we take the same strategy
+# located in https://github.com/appunite/docker by just wrapping it in a script
+# which apparently magically accepts the licenses.
+
+SDK=4333796
+mkdir sdk
+curl --retry 20 https://dl.google.com/android/repository/sdk-tools-linux-${SDK}.zip -O
+unzip -q -d sdk sdk-tools-linux-${SDK}.zip
+
+case "$1" in
+  arm | armv7)
+    api=24
+    image="system-images;android-${api};google_apis;armeabi-v7a"
+    ;;
+  aarch64)
+    api=24
+    image="system-images;android-${api};google_apis;arm64-v8a"
+    ;;
+  i686)
+    api=28
+    image="system-images;android-${api};default;x86"
+    ;;
+  x86_64)
+    api=28
+    image="system-images;android-${api};default;x86_64"
+    ;;
+  *)
+    echo "invalid arch: $1"
+    exit 1
+    ;;
+esac;
+
+# Try to fix warning about missing file.
+# See https://askubuntu.com/a/1078784
+mkdir -p /root/.android/
+echo '### User Sources for Android SDK Manager' >> /root/.android/repositories.cfg
+echo '#Fri Nov 03 10:11:27 CET 2017 count=0' >> /root/.android/repositories.cfg
+
+# Print all available packages
+# yes | ./sdk/tools/bin/sdkmanager --list --verbose
+
+# --no_https avoids
+# javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: No trusted certificate found
+#
+# | grep -v = || true    removes the progress bar output from the sdkmanager
+# which produces an insane amount of output.
+yes | ./sdk/tools/bin/sdkmanager --licenses --no_https | grep -v = || true
+yes | ./sdk/tools/bin/sdkmanager --no_https \
+        "emulator" \
+        "platform-tools" \
+        "platforms;android-${api}" \
+        "${image}" | grep -v = || true
+
+echo "no" |
+    ./sdk/tools/bin/avdmanager create avd \
+        --name "${1}" \
+        --package "${image}" | grep -v = || true

ci/android-sysimage.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+URL=https://dl.google.com/android/repository/sys-img/android
+
+main() {
+    local arch="${1}"
+    local name="${2}"
+    local dest=/system
+    local td
+    td="$(mktemp -d)"
+
+    apt-get install --no-install-recommends e2tools
+
+    pushd "${td}"
+    curl --retry 5 -O "${URL}/${name}"
+    unzip -q "${name}"
+
+    local system
+    system="$(find . -name system.img)"
+    mkdir -p ${dest}/{bin,lib,lib64}
+
+    # Extract android linker and libraries to /system
+    # This allows android executables to be run directly (or with qemu)
+    if [ "${arch}" = "x86_64" ] || [ "${arch}" = "arm64" ]; then
+        e2cp -p "${system}:/bin/linker64" "${dest}/bin/"
+        e2cp -p "${system}:/lib64/libdl.so" "${dest}/lib64/"
+        e2cp -p "${system}:/lib64/libc.so" "${dest}/lib64/"
+        e2cp -p "${system}:/lib64/libm.so" "${dest}/lib64/"
+    else
+        e2cp -p "${system}:/bin/linker" "${dest}/bin/"
+        e2cp -p "${system}:/lib/libdl.so" "${dest}/lib/"
+        e2cp -p "${system}:/lib/libc.so" "${dest}/lib/"
+        e2cp -p "${system}:/lib/libm.so" "${dest}/lib/"
+    fi
+
+    # clean up
+    apt-get purge --auto-remove -y e2tools
+
+    popd
+
+    rm -rf "${td}"
+}
+
+main "${@}"

ci/docker/aarch64-linux-android/Dockerfile

@@ -0,0 +1,53 @@
+FROM ubuntu:19.04
+
+RUN dpkg --add-architecture i386 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends \
+  file \
+  curl \
+  ca-certificates \
+  python \
+  unzip \
+  expect \
+  openjdk-8-jre \
+  libstdc++6:i386 \
+  libpulse0 \
+  gcc \
+  libc6-dev \
+  make \
+  cmake # cmake is necessary to build wabt
+
+WORKDIR /android/
+COPY android* /android/
+
+ENV ANDROID_ARCH=aarch64
+ENV PATH=$PATH:/android/sdk/tools:/android/sdk/platform-tools
+
+RUN sh /android/android-install-ndk.sh $ANDROID_ARCH
+RUN sh /android/android-install-sdk.sh $ANDROID_ARCH
+ENV ANDROID_NDK_HOME=/android/ndk
+
+RUN mv /root/.android /tmp
+RUN chmod 777 -R /tmp/.android
+RUN chmod 755 /android/sdk/tools/* /android/sdk/emulator/qemu/linux-x86_64/*
+
+ENV PATH=$PATH:/rust/bin:$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin \
+    CARGO_TARGET_AARCH64_LINUX_ANDROID_AR=aarch64-linux-android-ar \
+    CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER=aarch64-linux-android28-clang++ \
+    CC_aarch64_linux_android=aarch64-linux-android28-clang \
+    CXX_aarch64_linux_android=aarch64-linux-android28-clang++ \
+    CARGO_TARGET_AARCH64_LINUX_ANDROID_RUNNER=/tmp/runtest \
+    HOME=/tmp
+
+ADD runtest-android.rs /tmp/runtest.rs
+
+ENTRYPOINT [ \
+  "bash", \
+  "-c", \
+  # set SHELL so android can detect a 64bits system, see
+  # http://stackoverflow.com/a/41789144
+  "SHELL=/bin/dash /android/sdk/emulator/emulator @aarch64 -no-window & \
+   rustc /tmp/runtest.rs -o /tmp/runtest && \
+   exec \"$@\"", \
+  "--" \
+]

ci/docker/x86_64-linux-android/Dockerfile

@@ -0,0 +1,31 @@
+FROM ubuntu:19.04
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+  ca-certificates \
+  curl \
+  gcc \
+  libc-dev \
+  python \
+  unzip \
+  make \
+  cmake # cmake is necessary to build wabt
+
+WORKDIR /android/
+ENV ANDROID_ARCH=x86_64
+COPY android-install-ndk.sh /android/
+RUN sh /android/android-install-ndk.sh $ANDROID_ARCH
+ENV ANDROID_NDK_HOME=/android/ndk/
+
+# We do not run x86_64-linux-android tests on an android emulator.
+# See ci/android-sysimage.sh for informations about how tests are run.
+COPY android-sysimage.sh /android/
+RUN bash /android/android-sysimage.sh x86_64 x86_64-24_r07.zip
+
+ENV PATH=$PATH:/rust/bin:$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin \
+    CARGO_TARGET_X86_64_LINUX_ANDROID_AR=x86_64-linux-android-ar \
+    CARGO_TARGET_X86_64_LINUX_ANDROID_LINKER=x86_64-linux-android28-clang++ \
+    CC_x86_64_linux_android=x86_64-linux-android28-clang \
+    CXX_x86_64_linux_android=x86_64-linux-android28-clang++ \
+    LD_LIBRARY_PATH=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/lib/x86_64-linux-android/ \
+    HOME=/tmp

ci/run-docker.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env sh
+
+# Small script to run tests for a target (or all targets) inside all the
+# respective docker images.
+
+set -e
+
+echo "${HOME}"
+pwd
+
+TARGET="${1}"
+shift
+
+echo "Building docker container for target $target"
+
+# use -f so we can use ci/ as build context
+image_tag=test-"$TARGET"
+docker build -t "$image_tag" -f "ci/docker/${TARGET}/Dockerfile" ci/
+mkdir -p target
+
+set -x
+
+docker run \
+  --rm \
+  --user "$(id -u)":"$(id -g)" \
+  --env CARGO_HOME=/cargo \
+  --env CARGO_TARGET_DIR=/checkout/target \
+  --volume "$(dirname "$(dirname "$(command -v cargo)")")":/cargo \
+  --volume "$(rustc --print sysroot)":/rust:ro \
+  --volume "$(pwd)":/checkout:ro \
+  --volume "$(pwd)"/target:/checkout/target \
+  --init \
+  --workdir /checkout \
+  "$image_tag" \
+  sh -c "HOME=/tmp PATH=\$PATH:/rust/bin exec cargo test --target ${TARGET} $@"

ci/runtest-android.rs

@@ -0,0 +1,60 @@
+use std::env;
+use std::path::{Path, PathBuf};
+use std::process::Command;
+
+fn main() {
+    let args = env::args_os()
+        .skip(1)
+        .filter(|arg| arg != "--quiet")
+        .collect::<Vec<_>>();
+    assert_eq!(args.len(), 1);
+    let test = PathBuf::from(&args[0]);
+
+    // required to run an executable depending on wabt-rs
+    let android_ndk_home = env::var("ANDROID_NDK_HOME").expect("Can't get ANDROID_NDK_HOME!");
+    let path = format!("{}/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/lib/x86_64-linux-android/libc++_shared.so", android_ndk_home);
+    let libcpp_shared = Path::new(&path);
+
+    let dst = Path::new("/data/local/tmp");
+    let dst_exec = Path::new("/data/local/tmp").join(test.file_name().unwrap());
+
+    let status = Command::new("adb")
+        .arg("wait-for-device")
+        .status()
+        .expect("failed to run: adb wait-for-device");
+    assert!(status.success());
+
+    let status = Command::new("adb")
+        .arg("push")
+        .arg(&test)
+        .arg(&libcpp_shared)
+        .arg(&dst)
+        .status()
+        .expect("failed to run: adb pushr");
+    assert!(status.success());
+
+    let output = Command::new("adb")
+        .arg("shell")
+        .arg("LD_LIBRARY_PATH=/data/local/tmp/")
+        .arg(&dst_exec)
+        .output()
+        .expect("failed to run: adb shell");
+    assert!(status.success());
+
+    println!(
+        "status: {}\nstdout ---\n{}\nstderr ---\n{}",
+        output.status,
+        String::from_utf8_lossy(&output.stdout),
+        String::from_utf8_lossy(&output.stderr)
+    );
+
+    let stdout = String::from_utf8_lossy(&output.stdout);
+    stdout
+        .lines()
+        .find(|l| {
+            (l.starts_with("PASSED ") && l.contains(" tests")) || l.starts_with("test result: ok")
+        })
+        .unwrap_or_else(|| {
+            panic!("failed to find successful test run");
+        });
+}