無法安裝 PHP5 - BBS

利用 PORTS 進行安裝 PHP5 時，會出現下列的訊息：

Configuring extensions
checking whether to enable LIBXML support... yes
checking libxml2 install dir... /usr/local
checking for xml2-config path... /usr/local/bin/xml2-config
checking whether libxml build works... no
configure: error: build test failed. Please check the config.log for details.
===> Script "configure" failed unexpectedly.
Please report the problem to [email protected] [maintainer] and attach the
"/usr/ports/lang/php5/work/php-5.2.1/config.log" including the output of the
failure of your make command. Also, it might be a good idea to provide an
overview of all packages installed on your system (e.g. an `ls /var/db/pkg`).
*** Error code 1

感覺是 libxml 的問題，但 libxml 跟 libxml2 都已經安裝，不知為何還出現這些

錯誤訊息，奇怪的是 PHP4 反而能夠安裝。

請問有經驗的前輩，這可能是什麼狀況呢？有需要的話，我能把整個 config.log

貼出來。謝謝各位的閱讀，謝謝。

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