Kokoro Ubuntu: Switch to docker image

`presubmit.sh` now runs presubmit-docker.sh using the new radial docker image which contains various toolchains.

The `/bin/using.sh` bash script exports the `using` bash function which can be called to configure toolchains at specific versions.

examples/BUILD.bazel

@@ -41,3 +41,13 @@ cc_binary(
         "//:marl",
     ],
 )
+
+cc_binary(
+    name = "tasks_in_tasks",
+    srcs = [
+        "tasks_in_tasks.cpp",
+    ],
+    deps = [
+        "//:marl",
+    ],
+)

kokoro/ubuntu/presubmit-docker.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+
+set -e # Fail on any error.
+
+. /bin/using.sh # Declare the bash `using` function for configuring toolchains.
+
+set -x # Display commands being run.
+
+cd github/marl
+
+git submodule update --init
+
+using gcc-9 # Always update gcc so we get a newer standard library.
+
+if [ "$BUILD_SYSTEM" == "cmake" ]; then
+    using cmake-3.17.2
+
+    mkdir build
+    cd build
+
+    if [ "$BUILD_TOOLCHAIN" == "clang" ]; then
+        using clang-10.0.0
+    fi
+
+    EXTRA_CMAKE_FLAGS=""
+    if [ "$BUILD_TARGET_ARCH" == "x86" ]; then
+        EXTRA_CMAKE_FLAGS="-DCMAKE_CXX_FLAGS=-m32 -DCMAKE_C_FLAGS=-m32 -DCMAKE_ASM_FLAGS=-m32"
+    fi
+
+    if [ "$BUILD_SANITIZER" == "asan" ]; then
+        EXTRA_CMAKE_FLAGS="$EXTRA_CMAKE_FLAGS -DMARL_ASAN=1"
+    elif [ "$BUILD_SANITIZER" == "msan" ]; then
+        EXTRA_CMAKE_FLAGS="$EXTRA_CMAKE_FLAGS -DMARL_MSAN=1"
+    elif [ "$BUILD_SANITIZER" == "tsan" ]; then
+        EXTRA_CMAKE_FLAGS="$EXTRA_CMAKE_FLAGS -DMARL_TSAN=1"
+    fi
+
+    cmake .. ${EXTRA_CMAKE_FLAGS} \
+            -DMARL_BUILD_EXAMPLES=1 \
+            -DMARL_BUILD_TESTS=1 \
+            -DMARL_BUILD_BENCHMARKS=1 \
+            -DMARL_WARNINGS_AS_ERRORS=1
+
+    make --jobs=$(nproc)
+
+    ./marl-unittests
+    ./fractal
+    ./hello_task
+    ./primes > /dev/null
+    ./tasks_in_tasks
+
+elif [ "$BUILD_SYSTEM" == "bazel" ]; then
+    using bazel-3.1.0
+
+    bazel test //:tests --test_output=all
+    bazel run //examples:fractal
+    bazel run //examples:hello_task
+    bazel run //examples:primes > /dev/null
+    bazel run //examples:tasks_in_tasks
+else
+    echo "Unknown build system: $BUILD_SYSTEM"
+    exit 1
+fi

kokoro/ubuntu/presubmit.sh

@@ -1,93 +1,17 @@
 #!/bin/bash
 
 set -e # Fail on any error.
-set -x # Display commands being run.
 
-BUILD_ROOT=$PWD
+ROOT_DIR=`pwd`
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd )"
-UBUNTU_VERSION=`cat /etc/os-release | grep -oP "Ubuntu \K([0-9]+\.[0-9]+)"`
 
-cd github/marl
-
-git submodule update --init
-
-# Always update gcc so we get a newer standard library.
-sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-sudo apt-get update
-sudo apt-get install -y gcc-9-multilib g++-9-multilib linux-libc-dev:i386
-sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 100 --slave /usr/bin/g++ g++ /usr/bin/g++-9
-sudo update-alternatives --set gcc "/usr/bin/gcc-9"
-
-if [ "$BUILD_SYSTEM" == "cmake" ]; then
-    mkdir build
-    cd build
-
-    if [ "$BUILD_TOOLCHAIN" == "clang" ]; then
-        # Download clang tar
-        CLANG_TAR="/tmp/clang-8.tar.xz"
-        curl -L "https://releases.llvm.org/8.0.0/clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-${UBUNTU_VERSION}.tar.xz" > ${CLANG_TAR}
-
-        # Verify clang tar
-        sudo apt-get install pgpgpg
-        gpg --import "${SCRIPT_DIR}/clang-8.pubkey.asc"
-        gpg --verify "${SCRIPT_DIR}/clang-8-ubuntu-${UBUNTU_VERSION}.sig" ${CLANG_TAR}
-        if [ $? -ne 0 ]; then
-            echo "clang download failed PGP check"
-            exit 1
-        fi
-
-        # Untar into tmp
-        CLANG_DIR=/tmp/clang-8
-        mkdir ${CLANG_DIR}
-        tar -xf ${CLANG_TAR} -C ${CLANG_DIR}
-
-        # Use clang as compiler
-        export CC="${CLANG_DIR}/clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-${UBUNTU_VERSION}/bin/clang"
-        export CXX="${CLANG_DIR}/clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-${UBUNTU_VERSION}/bin/clang++"
-    fi
-
-    extra_cmake_flags=""
-    if [ "$BUILD_TARGET_ARCH" == "x86" ]; then
-        extra_cmake_flags="-DCMAKE_CXX_FLAGS=-m32 -DCMAKE_C_FLAGS=-m32 -DCMAKE_ASM_FLAGS=-m32"
-    fi
-
-    build_and_run() {
-        cmake .. ${extra_cmake_flags} \
-                 -DMARL_BUILD_EXAMPLES=1 \
-                 -DMARL_BUILD_TESTS=1 \
-                 -DMARL_BUILD_BENCHMARKS=1 \
-                 -DMARL_WARNINGS_AS_ERRORS=1 \
-                 $1
-
-        make --jobs=$(nproc)
-
-        ./marl-unittests
-        ./fractal
-        ./hello_task
-        ./primes > /dev/null
-        ./tasks_in_tasks
-    }
-
-    if [ "$BUILD_SANITIZER" == "asan" ]; then
-        build_and_run "-DMARL_ASAN=1"
-    elif [ "$BUILD_SANITIZER" == "msan" ]; then
-        build_and_run "-DMARL_MSAN=1"
-    elif [ "$BUILD_SANITIZER" == "tsan" ]; then
-        build_and_run "-DMARL_TSAN=1"
-    else
-        build_and_run
-    fi
-elif [ "$BUILD_SYSTEM" == "bazel" ]; then
-    # Get bazel
-    curl -L -k -O -s https://github.com/bazelbuild/bazel/releases/download/0.29.1/bazel-0.29.1-installer-linux-x86_64.sh
-    mkdir $BUILD_ROOT/bazel
-    bash bazel-0.29.1-installer-linux-x86_64.sh --prefix=$BUILD_ROOT/bazel
-    rm bazel-0.29.1-installer-linux-x86_64.sh
-    # Build and run
-    $BUILD_ROOT/bazel/bin/bazel test //:tests --test_output=all
-    $BUILD_ROOT/bazel/bin/bazel run //examples:fractal
-    $BUILD_ROOT/bazel/bin/bazel run //examples:primes > /dev/null
-else
-    echo "Unknown build system: $BUILD_SYSTEM"
-    exit 1
-fi
+docker run --rm -i \
+  --volume "${ROOT_DIR}:${ROOT_DIR}" \
+  --volume "${KOKORO_ARTIFACTS_DIR}:/mnt/artifacts" \
+  --workdir "${ROOT_DIR}" \
+  --env BUILD_SYSTEM=$BUILD_SYSTEM \
+  --env BUILD_TOOLCHAIN=$BUILD_TOOLCHAIN \
+  --env BUILD_TARGET_ARCH=$BUILD_TARGET_ARCH \
+  --env BUILD_SANITIZER=$BUILD_SANITIZER \
+  --entrypoint "${SCRIPT_DIR}/presubmit-docker.sh" \
+  "gcr.io/shaderc-build/radial-build:latest"