v-rockro:~/php-5.1.2# ./configure -prefix=/usr/local/php -with-apxs2=/usr/local/apache2/bin/apxs -with-mysql=/usr/local/mysql


Configuring extensions
checking whether to enable LIBXML support... yes
checking libxml2 install dir... no
checking for xml2-config path...
configure: error: xml2-config not found. Please check your libxml2 installation.v-rockro:~/php-5.1.2#

EDIT: also

v-rockro:~# svn
svn: error: cannot set LC_ALL locale
svn: error: environment variable LANG is en_US
svn: error: please check that your locale name is correct
v-rockro:~#

and

v-rockro:~# locale LC_TYPE
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
v-rockro:~# LC_TYPE

You need to install the libxml2-devel package for php to ./configure and compile properly. I am not sure how to fix the svn error.

fixed! thank you