rebase upstreaming-when

Author: GitMensch

.android/Dockerfile

@@ -0,0 +1,29 @@
+FROM ubuntu:latest
+
+ARG ndk_version=r27c
+
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    curl \
+    cmake \
+    ninja-build \
+    python3 \
+    unzip
+
+RUN curl -o ndk.zip https://dl.google.com/android/repository/android-ndk-${ndk_version}-linux.zip
+RUN unzip ndk.zip && mv android-ndk-${ndk_version} /ndk
+
+RUN curl -o capnproto.tar.gz https://capnproto.org/capnproto-c++-0.10.2.tar.gz
+RUN mkdir -p /src/capnproto
+RUN tar zxf capnproto.tar.gz -C /src/capnproto --strip-components=1
+RUN mkdir -p /build/capnproto
+RUN cd /build/capnproto
+RUN /src/capnproto/configure
+RUN make -j$(nproc) install
+RUN cd -
+
+RUN mkdir -p /build/rr
+RUN chmod 777 /build/rr
+
+WORKDIR /build/rr
+CMD ["/bin/bash", "/src/rr/.android/build.sh"]

.android/README.md

@@ -0,0 +1,22 @@
+# Building for Android
+
+To build for Android (from the root of the rr source tree):
+
+```
+docker build .android -t rr-android
+mkdir -p obj/dist
+docker run -it --rm \
+    -u $UID:$GID \
+    -v $(pwd):/src/rr \
+    -v $(pwd)/obj/dist:/dist \
+    rr-android
+```
+
+`-u $UID:GID` ensures that the build runs with your current UID/GID, which is
+necessary to avoid the output being only writable by root.
+
+`-v $(pwd):/src/rr` mounts the source tree in the container so it can be built.
+
+`-v $(pwd)/obj/dist:/dist` sets the output directory for the container to the
+current directory. The last step of the build will copy the rr tarball to the
+directory on the left of `:`.

.android/build.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+set -e
+set -x
+
+DEVICE_CMAKE_DEFS="-DCMAKE_TOOLCHAIN_FILE=/ndk/build/cmake/android.toolchain.cmake -DANDROID_ABI=x86_64 -DANDROID_PLATFORM=android-28"
+
+# Build capnp again for the device
+INSTALL_PREFIX=$(pwd)/install
+mkdir -p $INSTALL_PREFIX
+mkdir capnproto-android
+cd capnproto-android
+cmake -G Ninja \
+  $DEVICE_CMAKE_DEFS \
+  -DEXTERNAL_CAPNP=True \
+  -DBUILD_SHARED_LIBS=True \
+  -DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX \
+  /src/capnproto
+cmake --build .
+cmake --install .
+cd -
+
+mkdir obj
+cd obj
+cmake -G Ninja \
+  $DEVICE_CMAKE_DEFS \
+  -Ddisable32bit=True \
+  -DBUILD_TESTS=False \
+  -DCMAKE_FIND_ROOT_PATH=$INSTALL_PREFIX \
+  -DSKIP_PKGCONFIG=True \
+  -DEXTRA_VERSION_STRING="$BUILD_ID" \
+  -DZLIB_LDFLAGS=-lz \
+  -DEXTRA_EXTERNAL_SOLIBS="/build/rr/capnproto-android/src/kj/libkj.so;/build/rr/capnproto-android/src/capnp/libcapnp.so" \
+  /src/rr
+cmake --build .
+cpack -G TGZ
+
+cp dist/* /dist/

.buildkite/.gitignore

@@ -0,0 +1,2 @@
+test.yml
+test-*.yml