The libxml extension is enabled by default, although it may be disabled with --disable-libxml.
The optional --with-libxml-dir directive is used to specify the location of libxml
on the system that PHP is being compiled on, otherwise only the default locations are scanned. The configure
process checks for libxml (specifically, xml2-config
) in the following order:
The location ([DIR]) specified with --with-libxml-dir ([DIR]=/bin/xml2-config)
/usr/local/bin/xml2-config
/usr/bin/xml2-config
If configure
cannot find xml2-config in the directory specified by --with-libxml-dir, then it'll continue on and check the default locations.