你好 小弟最近在交叉编译dbus的时候碰到了一些麻烦，路过看到大哥对dbus深有研究，不知道能否给点指引？1、环境：arm-linux-gcc-3.4.5libxml2-2.6.32dbus-1.2.1以下是config后的提示信息： D-Bus 1.2.1 ============== prefix: /usr/local exec_prefix: ${prefix} libdir: /usr/local/lib libexecdir: /usr/local/libexec bindir: /usr/local/bin sysconfdir: /usr/local/etc localstatedir: /usr/local/var datadir: /usr/local/share source code location: . compiler: arm-linux-gcc cflags: -ffunction-sections -fdata-sections -g -O2 -Wall -Wchar-subscripts -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wcast-align -Wfloat-equal -Wsign-compare -Wdeclaration-after-statement -fno-common cppflags: cxxflags: -g -O2 64-bit int: long long 32-bit int: int 16-bit int: short Doxygen: no xmlto: no Maintainer mode: no gcc coverage profiling: no Building unit tests: no Building verbose mode: no Building assertions: no Building checks: yes Building SELinux support: no Building inotify support: no Building dnotify support: yes Building kqueue support: no Building X11 code: yes Building Doxygen docs: no Building XML docs: no Building cache support: yes Gettext libs (empty OK): Using XML parser: libxml Init scripts style: none Abstract socket names: yes System bus socket: /usr/local/var/run/dbus/system_bus_socket System bus address: unix:path=/usr/local/var/run/dbus/system_bus_socket System bus PID file: /usr/local/var/run/dbus/pid Session bus socket dir: /tmp Console auth dir: /var/run/console/ Console owner file: no Console owner file path: System bus user: messagebus Session bus services dir: /usr/local/share/dbus-1/services 'make check' socket dir: /tmp编译的时候提示以下错误：config-loader-libxml.c:198: undefined reference to `xmlReaderForMemory'可是我已经安装了xml的库：lfc@lfc-laptop:dbus-1.2.1$ ls /usr/local/arm/3.4.5/arm-linux/lib/libxml2.*/usr/local/arm/3.4.5/arm-linux/lib/libxml2.a /usr/local/arm/3.4.5/arm-linux/lib/libxml2.so.2/usr/local/arm/3.4.5/arm-linux/lib/libxml2.la /usr/local/arm/3.4.5/arm-linux/lib/libxml2.so.2.6.32/usr/local/arm/3.4.5/arm-linux/lib/libxml2.so而且是交叉编译的：lfc@lfc-laptop:dbus-1.2.1$ file /usr/local/arm/3.4.5/arm-linux/lib/libxml2.so.2.6.32 /usr/local/arm/3.4.5/arm-linux/lib/libxml2.so.2.6.32: ELF 32-bit LSB shared object, ARM, version 1, not stripped搜索也可以查找到：lfc@lfc-laptop:dbus-1.2.1$ grep "xmlReaderForMemory" /usr/local/arm/3.4.5/arm-linux/lib/* -rn二进制文件 /usr/local/arm/3.4.5/arm-linux/lib/libxml2.a 匹配二进制文件 /usr/local/arm/3.4.5/arm-linux/lib/libxml2.so 匹配二进制文件 /usr/local/arm/3.4.5/arm-linux/lib/libxml2.so.2 匹配二进制文件 /usr/local/arm/3.4.5/arm-linux/lib/libxml2.so.2.6.32 匹配不知道大侠有没有碰到过类似的问题，请问你是如何解决的？谢谢！
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崔计平 回复于：2008-05-29
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你好，D-BUS在configure时，默认的是expat, 而不是libxml; 如果你没有强制--with-xml=libxml的话，在./configure时，如果链接到libxml上，说明你的路径没有导对；你可以试试：假设你的taget目录是/test, 则你可以在./configure是加上 LDFLAGS="-L/test/lib" CPPFLAGS="-I/test/include" 后面接上你的一些选项，这样就可以定位到expat上面，另外在编译1.2.1时，别忘记了加上ac_cv_have_abstract_socket=yes ,你试试吧，我用这种方法是可以编译过去的。