P4语言编译环境搭建Ubuntu20.04
搭建P4编译环境
现有的一些教程基本都是在Ubuntu16等旧版本上的，照着原有的教程在Ubuntu20及以后的版本中会有较多的错误，本文记录一下艰苦的搭环境过程，笔者使用的系统为Ubuntu20.04，强烈建议多参考GitHub中提供的官方文档。
https://github.com/p4lang
本文也参考了
https://github.com/10249421/p4_code_learn/blob/main/p4-user-bootstrap.sh
P4C安装
. /etc/os-release
echo "deb http://download.opensuse.org/repositories/home:/p4lang/xUbuntu_${VERSION_ID}/ /" | sudo tee /etc/apt/sources.list.d/home:p4lang.list
sudo apt install curl
curl -L "http://download.opensuse.org/repositories/home:/p4lang/xUbuntu_${VERSION_ID}/Release.key" | sudo apt-key add -
sudo apt-get update
sudo apt install p4lang-p4c
bmv2安装
sudo apt-get install -y automake cmake libgmp-dev \
libpcap-dev libboost-dev libboost-test-dev libboost-program-options-dev \
libboost-system-dev libboost-filesystem-dev libboost-thread-dev \
libevent-dev libtool flex bison pkg-config g++ libssl-dev
安装thrift //安装0.11.0 - 0.13.0 安装0.15.0时报错未解决
安装nanomsg
cd behavioral-model
./autogen.sh
./configure
make
sudo make install # if you need to install bmv2
安装mininet
//sudo apt-get install mininet
git clone https://github.com/mininet/mininet mininet
sudo ./mininet/util/install.sh -nwv
安装gmock
cd gmock-1.7.0
cd make
make
./gmock_test
安装protobuf
git clone git//github.com/protocolbuffers/protobuf.git
cd protobuf/
./autogen.sh
./configure
make
sudo make install
sudo ldconfig
之后把tutorial下载下来跑一下试试，能跑起来应该没啥问题了，之后遇到问题再说（逃）
grpc安装
sudo apt-get install build-essential autoconf libtool pkg-config cmake clang libc++-dev libssl-dev -y
git clone https://github.com/grpc/grpc.git
export LDFLAGS="-Wl,-s"
# Install gRPC and its dependencies
mkdir -p "cmake/build"
pushd "cmake/build"
cmake -DBUILD_SHARED_LIBS=ON \
-DCMAKE_BUILD_TYPE=Release \
-DgRPC_INSTALL=ON \
-DgRPC_BUILD_TESTS=OFF \
-DgRPC_SSL_PROVIDER=package \
../..
make -j${NUM_CORES}
sudo make check | tee $p4/log/grpc.log
sudo make install | tee -a $p4/log/grpc.log
sudo ldconfig
unset LDFLAGS
popd
# Build helloworld example using cmake
mkdir -p "examples/cpp/helloworld/cmake/build"
pushd "examples/cpp/helloworld/cmake/build"
cmake ../..
make -j${NUM_CORES}
popd
cd $p4
# Install gRPC Python Package
sudo pip3 install grpcio
git submodule update --init --recursive会因为网络问题失败，解决方法是把.gitmodules中的url中的https：全改为git：然后运行
module update --init --recursive