php安装过程中，libxml遇到的问题

Question

安装PHP中提示libxml版本底，把系统中的libxml强行UNINSTALL后安装新版本的libxml提示如下：
----------------------------------------------------------------------------------------------
[root@test libxml2-2.6.10]# ./configure --prefix=/usr/local/libxml
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... configure: error: newly created file is older than distributed files!
Check your system clock
[root@test libxml2-2.6.10]#
--------------------------------------------------------------------------------------------------

请各位看看是什么问题