Git 源码编译

#!/usr/bin/env bash
if [[ -z $1 ]];then
	echo "请输入版本号: 2.25.1"
	exit 1
fi

if [[ -z $2 ]];then
	echo "请输入命令类型:"
	echo "安装路径为: /usr/local/git-v版本号"
	echo "f: 下载最新仓库"
	echo "b: 重新构建"
	echo "c: 清理构建"
	echo "l: 链接到 /usr/local/bin"
	echo "ul: 删除链接"
	echo "ui: 删除指定版本二进制"
	echo "keychain: 编译 git-credential-osxkeychain，并安装到 /usr/local/bin"
    echo "================="
    echo "CPU:"
    echo "$(sysctl -n machdep.cpu.brand_string)"
    echo "core: $(sysctl -n machdep.cpu.core_count)"
    echo "thread: $(sysctl -n machdep.cpu.thread_count)"
	exit 1
fi


if [[ -d .git ]];then
	echo "switch to v$1"
	git checkout -b build/v$1 v$1 || echo "v$1 maybe exist."
else
	echo "Is not git repo "
fi

function build_git() {
	opt=/usr/local/opt
	autoconf
	# CC=clang CXX=clang++ 
    
    if [[ $(uname) == "Linux"  ]];then
        cpun=$(cat /proc/cpuinfo | grep "physical id" | sort | uniq | wc -l)
    elif [[ $(uname) == "Darwin" ]];then
        cpun=$(sysctl -n machdep.cpu.thread_count)
    fi
    echo "cpu core number :$cpun"
	./configure --with-iconv=$opt/libiconv --with-curl --with-expat=$opt/expat  --prefix=/usr/local/git-v$1 --mandir=/usr/local/git-v$1/share/man && make -j$cpun && soft_link "git-v$1"
}

function soft_link() {
	if [[ -z $1 ]];then
		echo "input version like: v2.25.1"
	fi
	ln -sf /usr/local/$1/bin/git /usr/local/bin/git
	ln -sf /usr/local/$1/bin/git /usr/local/bin/git-receive-pack
	ln -sf /usr/local/$1/bin/git /usr/local/bin/git-upload-archive
	ln -sf /usr/local/$1/bin/git /usr/local/bin/git-upload-pack
	ln -sf /usr/local/$1/bin/git-shell /usr/local/bin/git-shell
	ln -sf /usr/local/$1/bin/git-cvsserver /usr/local/bin/git-cvsserver
}

function remove_link() {
	sudo rm /usr/local/bin/git
	sudo rm /usr/local/bin/git-receive-pack
	sudo rm /usr/local/bin/git-upload-archive
	sudo rm /usr/local/bin/git-upload-pack
}

function install_git_keychain() {
	echo "keychain"
	if [[ -z $1 ]];then
		echo "请输入 git 源码路径."
		return 1
	fi
	root_dir=$1
	kcpath=$root_dir/contrib/credential/osxkeychain
	cd $kcpath && make
	cd $root_dir
	ls -lsh $kcpath/git-credential-osxkeychain
	[ -f $kcpath/git-credential-osxkeychain ] && sudo cp -f $kcpath/git-credential-osxkeychain /usr/local/bin && echo "copied to /usr/local/bin"
	git config --global credential.helper osxkeychain
}

if [[ $2 == "b" ]];then
	build_git
elif [[ $2 == "f" ]];then
	[ ! -d ./.git ] && git init
	if [[ ! $(git remote add origin https://github.com/git/git.git) ]];then 
		echo "origin exist."
		 # git remote rename origin origin-prev
		 # git remote add origin https://github.com/git/git.git
	 else
		 echo "Init new repo: https://github.com/git/git.git"
	fi
	
	git fetch origin -a
elif [[ $2 == "c" ]];then
	make distclean
elif [[ $2 == "l" ]];then
	soft_link "git-v$1"
elif [[ $2 == "ul" ]];then
	remove_link
elif [[ $2 == "ui" ]];then
	sudo rm -r /usr/local/git-v$1
elif [[ $2 == "keychain" ]];then
	
	install_git_keychain $PWD

fi

使用方法:

git clone https://github.com/git/git.git
进入目录:
cd git

install_git.sh  会自动切换对应版本 tag 

# 编译安装
../install_git.sh 2.60.0 b
# 建立链接
../install_git.sh 2.60.0 l

# 删除链接
../install_git.sh 2.60.0 ul

# 构建安装 macOS keychain store
../install_git.sh 2.60.0 keychain