Install / libxml2 problem on Solaris 10 x86

[MorganGreylock]

I am trying to run configure on my Solaris 10/x86 workstation for PHP5. I keep running into the same error:

configure: error: libxml2 version 2.6.11 or greater required.

I downloaded, configured, compiled, and installed 2.6.27 of libxml2, and it said it used the basedir of /usr/local. Here is the configure command I am trying to execute:

./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-pgsql --with-libxml-dir=/usr/local --without-pear

And I continue to get the same error. I've tried putting /usr/local/include and several other directories in the --with-libxml-dir variable, but nothing seems to work.
I've verified that /usr/local/include/libxml2/libxml/xmlversion.h says that it is version 2.6.27. The one in /usr/include says 2.6.10, but I don't have that in my configure command anywhere, and I'm not sure what else to try. Any suggestions?

Thanks in advance!