--nodeps强制删除pcre后再安装报错

pcre-8.31.tar.gz 

[root@lamp ~]# tar xf pcre-8.31.tar.gz 

[root@lamp ~]# cd pcre-8.31

[root@lamp pcre-8.31]# ./configure --prefix=/usr/local/pcre

有错误：

“checking how to run the C preprocessor... grep: error while loading shared libraries: libpcre.so.0: cannot open shared object file: No such file or directory

gcc -E

grep: error while loading shared libraries: libpcre.so.0: cannot open shared object file: No such file or directory

checking for grep that handles long lines and -e... configure: error: no acceptable grep could be found in /usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/usr/xpg4/bin”

在安装pcre时我先把系统里旧版本的pcre用"rpm -e pcre --nodeps"卸载，再编译安装时就出现上面的错误，网上说是把Libpcre.so.0这个文件建个链接，但是搜索发现我系统里根本就没有这个文件，后来下载rpm安装也不行，有许多的依赖关系还要处理，最后用“yum -y install pcre”安装了一个低版本的pcre，再编译安装pcre-8.31时成功了，我想可能是卸载时加了--nodeps出了问题。