Linux动态库搜索顺序

参考：http://my.oschina.net/shelllife/blog/115958

"man ld" 给出下列内容：

1.  Any directories specified by -rpath-link options.2.  Any directories specified by -rpath options.  The difference between -rpath and -rpath-link is that directories specified by -rpath options are included in the executable and used at runtime, whereas the -rpath-link option is only effective at link time. Searching -rpath in this way is only supported by native linkers and cross linkers which have been configured with the --with-sysroot option.3.  On an ELF system, for native linkers, if the -rpath and -rpath-link options were not used, search the contents of the environment variable "LD_RUN_PATH".4.  On SunOS, if the -rpath option was not used, search any directories specified using -L options.5.  For a native linker, the search the contents of the environment variable "LD_LIBRARY_PATH".6.  For a native ELF linker, the directories in "DT_RUNPATH" or "DT_RPATH" of a shared library are searched for shared libraries needed by it. The "DT_RPATH" entries are ignored if "DT_RUNPATH" entries exist.7.  The default directories, normally /lib and /usr/lib.8.  For a native linker on an ELF system, if the file /etc/ld.so.conf exists, the list of directories found in that file.

这就是完整的搜索列表了。