获取最新PHP代码

git clone https://git.php.net/repository/php-src.git

构建编译环境

apt-get install build-essential

编译：

./buildconf

报错autoconf not found，apt-get install autoconf

./configure --help

./configure --prefix=/tmp/ --disable-all //指定编译后的路径，关闭所有的扩展编译

报错configure: error: bison is required to build，==>apt-get install bison

报错configure: error: xml2-config not found.，==>apt-get install libxml2*

make

报错virtual memory exhausted: Cannot allocate memory，==>没有分配虚拟内存，swap

dd if=/dev/zero of=/swap bs=1024 count=1M

mkswap /swap

swapon /swap

echo "/swap swap swap sw 0 0" >> /etc/fstab

make install