前言
Apache 2.4 以后的版本不再自帶 APR 庫（Apache Portable Runtime，Apache 可移植運行庫），所以在安裝 Apache 之前需要手動下載安裝 APR 庫。
完整的 APR 實際上包含了三個依賴包：apr、apr-util 以及 apr-iconv。
正文
在官網下載了 apr-util 包，解壓后執行 make 編譯時，報錯如下：
[root@mingc apr-util-1.6.0]# make make[1]: Entering directory `/usr/local/src/apr-util-1.6.0' /bin/sh /usr/local/apr/build-1/libtool --silent --mode=compile gcc -g -O2 -pthread -DHAVE_CONFIG_H -DLINUX -D_REENTRANT -D_GNU_SOURCE -I/usr/local/src/apr-util-1.6.0/include -I/usr/local/src/apr-util-1.6.0/include/private -I/usr/local/apr/include/apr-1 -o xml/apr_xml.lo -c xml/apr_xml.c && touch xml/apr_xml.lo xml/apr_xml.c:35:19: error: expat.h: No such file or directory xml/apr_xml.c:66: error: expected specifier-qualifier-list before ‘XML_Parser’ xml/apr_xml.c: In function ‘cleanup_parser’: xml/apr_xml.c:364: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c:365: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c: At top level: xml/apr_xml.c:384: error: expected ‘;’, ‘,’ or ‘)’ before ‘*’ token xml/apr_xml.c: In function ‘apr_xml_parser_create’: xml/apr_xml.c:401: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c:402: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c:410: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c:411: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c:412: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c:424: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c:424: error: ‘default_handler’ undeclared (first use in this function) xml/apr_xml.c:424: error: (Each undeclared identifier is reported only once xml/apr_xml.c:424: error: for each function it appears in.) xml/apr_xml.c: In function ‘do_parse’: xml/apr_xml.c:434: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c:438: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c:442: error: ‘apr_xml_parser’ has no member named ‘xp_err’ xml/apr_xml.c:442: error: ‘apr_xml_parser’ has no member named ‘xp’ xml/apr_xml.c: In function ‘apr_xml_parser_geterror’: xml/apr_xml.c:500: error: ‘apr_xml_parser’ has no member named ‘xp_err’ xml/apr_xml.c:500: error: ‘apr_xml_parser’ has no member named ‘xp_err’ make[1]: *** [xml/apr_xml.lo] Error 1 make[1]: Leaving directory `/usr/local/src/apr-util-1.6.0' make: *** [all-recursive] Error 1
大致是說缺少了 xml 的解析器。查閱網絡資料后找到了解決方案，yum 安裝一個 expat-devel 包即可：
[root@mingc apr-util-1.6.0]# yum -y install expat-devel
參考鏈接：LAMP的部署