【问题】
折腾：
【记录】用交叉编译器arm-xscale-linux-gnueabi交叉编译一个基于嵌入式Linux的无线HART的项目
出错：
/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/lib/gcc/arm-xscale-linux-gnueabi/4.6.0/../../../../arm-xscale-linux-gnueabi/bin/ld: warning: libexpat.so.1, needed by /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so, not found (try using -rpath or -rpath-link) /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_SetEndElementHandler' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_ParserCreate' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_GetErrorCode' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_SetUserData' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_GetCurrentColumnNumber' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_ParseBuffer' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_GetCurrentLineNumber' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_SetCommentHandler' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_ErrorString' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_ParserFree' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_SetStartElementHandler' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_Parse' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_GetBuffer' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_GetCurrentByteIndex' /home/CLi/develop/crosstool-ng/x-tools/armxscalelog4c/lib/liblog4c.so: undefined reference to `XML_SetCharacterDataHandler' collect2: ld returned 1 exit status Makefile:109: recipe for target `armWHGSMainApp' failed make: *** [armWHGSMainApp] Error 1
即，libexpat貌似有点问题。
【解决过程】
1.貌似很明显，即：
没有找到对应的libexpat而已。
所以，去把之前的LDLIBS中，加上对应的expat的路径：
LIBEXPATROOTDIR = /home/CLi/develop/crosstool-ng/x-tools/armxscaleexpat LDLIBS = xxx -L$(LIBEXPATROOTDIR)/lib -lexpat
对应的，路径：
cgwin\home\CLi\develop\crosstool-ng\x-tools\armxscaleexpat\lib
下面，是有
libexpat.a
libexpat.so
libexpat.so.1
的。
2.再去编译试试，然后就可以了。
【总结】
当编译出现：
| ld: warning: libexpat.so.1, needed by liblog4c.so, not found (try using -rpath or -rpath-link) |
的错误时，说明：
在ld阶段，加载liblog4c时，其所依赖的expat库：libexpat没有找到。
解决办法：
给对应的ld的参数中，加上对应的
-L$(LIBEXPATROOTDIR)/lib -lexpat
其中LIBEXPATROOTDIR是你的expat库的（安装的）根目录。即可。
转载请注明：在路上 » 【记录】用交叉编译器arm-xscale-linux-gnueabi交叉编译出错：ld: warning: libexpat.so.1, needed by liblog4c.so, not found (try using -rpath or -rpath-link)