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Linux 编译 apr-util 时报错

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前言

Apache 2.4 以后的版本不再自带 APR 库（Apache Portable Runtime，Apache 可移植运行库），所以在安装 Apache 之前需要手动下载安装 APR 库。

完整的 APR 实际上包含了三个依赖包：apr、apr-util 以及 apr-iconv。

正文

在官网下载了 apr-util 包，解压后执行 make 编译时，报错如下： 

[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

大致是说缺少了 xml 的解析器。查阅网络资料后找到了解决方案，yum 安装一个 expat-devel 包即可： 

[root@mingc apr-util-1.6.0]# yum -y install expat-devel

参考链接：LAMP的部署

相关链接：Apache安装apr和apr-util作用

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