1#!/bin/bash 2# Copyright 2017 gRPC authors. 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# http://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15 16set -ex 17 18cd "$(dirname "$0")/../../.." 19 20# Install openssl (to use instead of boringssl) 21apt-get update && apt-get install -y libssl-dev 22 23# Install CMake 3.16 24apt-get update && apt-get install -y wget 25wget -q -O cmake-linux.sh https://github.com/Kitware/CMake/releases/download/v3.16.1/cmake-3.16.1-Linux-x86_64.sh 26sh cmake-linux.sh -- --skip-license --prefix=/usr 27rm cmake-linux.sh 28 29# Build and install gRPC for the host architecture. 30# We do this because we need to be able to run protoc and grpc_cpp_plugin 31# while cross-compiling. 32mkdir -p "cmake/build" 33pushd "cmake/build" 34cmake \ 35 -DCMAKE_BUILD_TYPE=Release \ 36 -DgRPC_INSTALL=ON \ 37 -DgRPC_BUILD_TESTS=OFF \ 38 -DgRPC_SSL_PROVIDER=package \ 39 ../.. 40make -j4 install 41popd 42 43# Download raspberry pi toolchain. 44mkdir -p "/tmp/raspberrypi_root" 45pushd "/tmp/raspberrypi_root" 46git clone https://github.com/raspberrypi/tools raspberrypi-tools 47cd raspberrypi-tools && git checkout 4a335520900ce55e251ac4f420f52bf0b2ab6b1f && cd .. 48 49# Write a toolchain file to use for cross-compiling. 50cat > toolchain.cmake <<'EOT' 51SET(CMAKE_SYSTEM_NAME Linux) 52SET(CMAKE_SYSTEM_PROCESSOR arm) 53set(devel_root /tmp/raspberrypi_root) 54set(CMAKE_STAGING_PREFIX ${devel_root}/stage) 55set(tool_root ${devel_root}/raspberrypi-tools/arm-bcm2708) 56set(CMAKE_SYSROOT ${tool_root}/arm-rpi-4.9.3-linux-gnueabihf/arm-linux-gnueabihf/sysroot) 57set(CMAKE_C_COMPILER ${tool_root}/arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc) 58set(CMAKE_CXX_COMPILER ${tool_root}/arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++) 59set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) 60set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) 61set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) 62set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY) 63EOT 64popd 65 66# Build and install gRPC for raspberry pi. 67# This build will use the host architecture copies of protoc and 68# grpc_cpp_plugin that we built earlier because we installed them 69# to a location in our PATH (/usr/local/bin). 70mkdir -p "cmake/raspberrypi_build" 71pushd "cmake/raspberrypi_build" 72cmake -DCMAKE_TOOLCHAIN_FILE=/tmp/raspberrypi_root/toolchain.cmake \ 73 -DCMAKE_BUILD_TYPE=Release \ 74 -DCMAKE_INSTALL_PREFIX=/tmp/raspberrypi_root/grpc_install \ 75 ../.. 76make -j4 install 77popd 78 79# Build helloworld example for raspberry pi. 80# As above, it will find and use protoc and grpc_cpp_plugin 81# for the host architecture. 82mkdir -p "examples/cpp/helloworld/cmake/raspberrypi_build" 83pushd "examples/cpp/helloworld/cmake/raspberrypi_build" 84cmake -DCMAKE_TOOLCHAIN_FILE=/tmp/raspberrypi_root/toolchain.cmake \ 85 -DCMAKE_BUILD_TYPE=Release \ 86 -DProtobuf_DIR=/tmp/raspberrypi_root/stage/lib/cmake/protobuf \ 87 -DgRPC_DIR=/tmp/raspberrypi_root/stage/lib/cmake/grpc \ 88 ../.. 89make 90popd 91