项目场景：
在Linux系统下使用命令解压安装 keepalived 源码包。
问题描述：
安装 keepalived 源码包，已经运行了以下命令：
tar -xzvf keepalived-2.2.2.tar.gz
cd keepalived-2.2.2
./configure --prefix=/usr/local/keepalived
前两个命令运行正常，第三个命令运行结果为：
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether make supports nested variables... (cached) yes
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/root/software/keepalived-2.2.2':
configure: error: no acceptable C compiler found in $PATH
原因分析：
出现该错误主要原因是没有C编译器。
解决方案：
安装C编译器：
yum -y install gcc
重新运行命令./configure --prefix=/usr/local/keepalived，命令运行正常，问题解决。
如果出现其他错误请参考：
configure: error: !!! OpenSSL is not properly installed on your system. !!! 错误解决
WARNING - this build will not support IPVS with IPv6. 警告解决