报错详情：
ln: failed to create symbolic link ‘/usr/lib64/libfastcommon.so’: No such file or directory
ln: failed to create symbolic link ‘/usr/lib64/libfdfsclient.so’: No such file or directory
解决：
修改文件，client/fdfs_link_library.sh.in
#查找：
ln -fs $TARGET_LIB/libfastcommon.so.1 /usr/lib64/libfastcommon.so
ln -fs $TARGET_LIB/libfdfsclient.so.1 /usr/lib64/libfdfsclient.so
#替换成：
ln -fs $TARGET_LIB/libfastcommon.so.1 /usr/lib/libfastcommon.so
ln -fs $TARGET_LIB/libfdfsclient.so.1 /usr/lib/libfdfsclient.so