尝试在CentOS7.2上编译安装Swift4.0

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原:尝试在CentOS7.2上编译安装Swift4.0

苹果提供 Ubuntu上构建Swift 的教程,通过这个教程我尝试使用CentOS7.2上玩儿一把。目前已经成功在CentOS7.2上面成功安装 swift 4.0

swift --version
Swift version 4.0-dev
Target: x86_64-unknown-linux-gnu

安装依赖

yum install -y git clang gcc-c++ uuid-devel libicu-devel icu libedit-devel libxml2-devel sqlite-devel swig python-devel ncurses-libs ncurses-devel pkgconfig libuuid-devel epel-release libbsd-devel

更新CMake

CMake 3.4.3 版本有要求,必须比 CMake 3.4.3 高。CMake官网

# 下载
wget https://cmake.org/files/v3.9/cmake-3.9.0.tar.gz
# 解压
tar -zxvf cmake-3.9.0.tar.gz
cd cmake-3.9.0
./bootstrap --prefix=/usr
make
sudo make install

下载Swift的源代码

打开 https://swift.org/source-code... 找到 Cloned Repositories 创建 mkdir -p /usr/local/swift && cd /usr/local/swift 目录并进入swift

# 下载 swift-llvm
wget https://github.com/apple/swift-llvm/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz -P llvm
tar -zxvf swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz -C src/llvm
# 下载 swift-clang
wget https://github.com/apple/swift-clang/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz -P clang
# 下载 swift-lldb
wget https://github.com/apple/swift-lldb/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz -P lldb
# 下载 swift-cmark
wget https://github.com/apple/swift-cmark/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz -P cmark
# 下载 swift
wget https://github.com/apple/swift/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz -P swift
# 下载 ninja
wget https://github.com/ninja-build/ninja/archive/v1.7.2.tar.gz -P ninja

上面采用 开发板编译花了三个小时,后面用 released 版本编译,警告少了许多,而且编译快了相当多呢,所以你需要选择一个稳定的 released 版本安装。

wget https://github.com/ninja-build/ninja/archive/v1.7.2.tar.gz -P ninja
wget https://github.com/apple/swift/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz  -P swift
wget https://github.com/apple/swift-cmark/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz  -P cmark
wget https://github.com/apple/swift-lldb/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz -P lldb
wget https://github.com/apple/swift-clang/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz -P clang
wget https://github.com/apple/swift-llvm/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-29-a.tar.gz -P llvm

wget https://github.com/apple/swift-corelibs-libdispatch/archive/swift-DEVELOPMENT-SNAPSHOT-2017-07-30-a.tar.gz -P swift-corelibs-libdispatch

安装之后的目录结构

swift/
└── src
    ├── clang
    ├── cmark
    ├── lldb
    ├── llvm
    ├── ninja
    ├── swift-corelibs-libdispatch 
    └── swift

编译安装ninja

yum install re2c -y # re2c 是一个用于编写快速灵活的词法分析器的工具

编译

./configure.py --bootstrap
cp ninja /usr/local/bin/

编译Swift编译器

文件 vi /etc/profile 添加下面代码添加完成之后,source /etc/profile 更改立即生效。

export SWIFT_SOURCE_ROOT=/usr/local/swift/src

进入cd /usr/local/swift/src/swift/utils/ 目录,运行脚本

# ./build-script -R
# 上面命令会报错,建议使用下面命令
# https://github.com/apple/swift/pull/3594#issuecomment-234169759

./build-script --libdispatch
./build-script --libdispatch --extra-cmake-options="-DSWIFT_BUILD_SOURCEKIT:BOOL=TRUE"

swap区不够大的原因。导致clang++ kernel opps

clang: error: unable to execute command: Killed
clang: error: linker command Failed due to signal (use -v to see invocation)

请加大分区:

sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile

开机自动挂载swap:
使用 vi 或 nano 在 /etc/fstab 文件底部添加如下内容

/swapfile none swap sw 0 0

libatomic不存在

# 错误
/usr/bin/ld: cannot find /usr/lib64/libatomic.so.1.0.0

解决办法,building swift on centos

# 下载
# 这里https://pkgs.org/download/libatomic找对应的rpm下载地址
wget --no-check-certificate -O /etc/yum.repos.d/libatomic-4.8.5-11.el7.x86_64.rpm ftp://ftp.pbone.net/mirror/ftp.centos.org/7.3.1611/os/x86_64/Packages/libatomic-4.8.5-11.el7.x86_64.rpm

# 安装
rpm -ivh libatomic-4.8.5-11.el7.x86_64.rpm

编译完成,设置环境信息 vi ~/.bash_profile

PATH=$PATH:/usr/local/swift/src/build/Ninja-ReleaseAssert/swift-linux-x86_64/bin

立即生效source ~/.bash_profile

HellWorld

添加 touch ~/HelloWorld.swift 文件添加下面代码测试

print("Hello world!")

编译 swift 文件

swiftc ~/HelloWorld.swift -o ~/Hello

运行 ~/Hello 输出 Hello world!

大功告成!

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