安装git前先检查一下是否有旧版本git
通过git –version查看系统带的版本，如果有就删除
# yum remove git
1.安装依赖的包
yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel yum install gcc perl-ExtUtils-MakeMaker
2.下载git源码并解压
wget https://github.com/git/git/archive/v2.3.0.zip unzip v2.3.0.zip（或：unzip v2.3.0）
进入解压的目录
cd git-2.3.0
3.编译安装
安装在/usr/local/下
make prefix=/usr/local/git all make prefix=/usr/local/git install
编译时出现如下异常：
libgit.a(utf8.o): In function `reencode_string_iconv': /root/git-2.3.0/utf8.c:463: undefined reference to `libiconv' libgit.a(utf8.o): In function `reencode_string_len': /root/git-2.3.0/utf8.c:502: undefined reference to `libiconv_open' /root/git-2.3.0/utf8.c:521: undefined reference to `libiconv_close' /root/git-2.3.0/utf8.c:515: undefined reference to `libiconv_open' collect2: ld 返回 1 make: *** [git-credential-store] 错误 1
下载并安装libiconv
cd .. wget http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.14.tar.gz tar -zxvf libiconv-1.14.tar.gz cd libiconv-1.14 ./configure --prefix=/usr/local/libiconv && make && make install
返回git在此编译安装
cd ../git-2.3.0 make clean autoconf ./configure --prefix=/usr/local --with-iconv=/usr/local/libiconv/ make install
错误如下：
In file included from progname.c:26:0: ./stdio.h:1010:1: error: ‘gets’ undeclared here (not in a function) _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead"); ^ make[2]: *** [progname.o] Error 1 make[2]: Leaving directory `/usr/local/src/zabbix-2.4.7/libiconv-1.14/srclib' make[1]: *** [all] Error 2 make[1]: Leaving directory `/usr/local/src/zabbix-2.4.7/libiconv-1.14/srclib' make: *** [all] Error 2
解决办法：
vi libiconv-1.14/srclib/stdio.in.h
将698行的代码：_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");替换为：
#if defined(__GLIBC__) && !defined(__UCLIBC__) && !__GLIBC_PREREQ(2, 16) _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");#endif
此时执行git --version仍然提示command not found，git已经安装成功，可能是配有配置环境变量
4.配置环境变量
vim /etc/profile
在文件最后一行添加：export PATH=/usr/local/git/bin:$PATH，保存退出
发现仍然不行，这是因为配置还未生效，不重启系统，使用source命令立即生效
source /etc/profile
然后git --version，提示 git version 2.3.0，已安装成功。
我这是用一个新linux服务器安装的，所有步骤都以列出，如有问题请联系
