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#!/bin/bash
# Copyright 2017 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
set -ex
cd "$(dirname "$0")/../../.."
# Install openssl (to use instead of boringssl)
apt-get update && apt-get install -y libssl-dev
# Install CMake 3.16
apt-get update && apt-get install -y wget
wget -q -O cmake-linux.sh https://github.com/Kitware/CMake/releases/download/v3.16.1/cmake-3.16.1-Linux-x86_64.sh
sh cmake-linux.sh -- --skip-license --prefix=/usr
rm cmake-linux.sh
# Build and install gRPC for the host architecture.
# We do this because we need to be able to run protoc and grpc_cpp_plugin
# while cross-compiling.
mkdir -p "cmake/build"
pushd "cmake/build"
cmake \
-DCMAKE_BUILD_TYPE=Release \
-DgRPC_INSTALL=ON \
-DgRPC_BUILD_TESTS=OFF \
-DgRPC_SSL_PROVIDER=package \
../..
make -j4 install
popd
# Write a toolchain file to use for cross-compiling.
cat > /tmp/toolchain.cmake <<'EOT'
SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_SYSTEM_PROCESSOR aarch64)
set(CMAKE_STAGING_PREFIX /tmp/stage)
set(CMAKE_C_COMPILER /usr/bin/aarch64-linux-gnu-gcc-6)
set(CMAKE_CXX_COMPILER /usr/bin/aarch64-linux-gnu-g++-6)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
EOT
# Build and install absl (absl won't be installed down below)
mkdir -p "third_party/abseil-cpp/cmake/build_arm"
pushd "third_party/abseil-cpp/cmake/build_arm"
cmake -DCMAKE_TOOLCHAIN_FILE=/tmp/toolchain.cmake \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX=/tmp/install \
-DCMAKE_POSITION_INDEPENDENT_CODE=TRUE \
../..
make -j4 install
popd
# Build and install gRPC for ARM.
# This build will use the host architecture copies of protoc and
# grpc_cpp_plugin that we built earlier because we installed them
# to a location in our PATH (/usr/local/bin).
mkdir -p "cmake/build_arm"
pushd "cmake/build_arm"
cmake -DCMAKE_TOOLCHAIN_FILE=/tmp/toolchain.cmake \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX=/tmp/install \
../..
make -j4 install
popd
# Build helloworld example for ARM.
# As above, it will find and use protoc and grpc_cpp_plugin
# for the host architecture.
mkdir -p "examples/cpp/helloworld/cmake/build_arm"
pushd "examples/cpp/helloworld/cmake/build_arm"
cmake -DCMAKE_TOOLCHAIN_FILE=/tmp/toolchain.cmake \
-DCMAKE_BUILD_TYPE=Release \
-DProtobuf_DIR=/tmp/stage/lib/cmake/protobuf \
-DgRPC_DIR=/tmp/stage/lib/cmake/grpc \
../..
make
popd
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