当我尝试运行命令sudo port install gdbm时，输出如下：
---> Fetching archive for gdbm
---> Attempting to fetch gdbm-1.10_0+universal.darwin_11.i386-x86_64.tbz2 from http://packages.macports.org/gdbm
---> Fetching gdbm
---> Verifying checksum(s) for gdbm
---> Extracting gdbm
---> Configuring gdbm
---> Building gdbm
---> Staging gdbm into destroot
Error: Target org.macports.destroot returned: /opt/local/lib/libgdbm.la differs in /opt/local/var/macports/build/_opt_local_var_macports_sources_svn.macports.org_trunk_dports_databases_gdbm/gdbm/work/destroot-i386 and /opt/local/var/macports/build/_opt_local_var_macports_sources_svn.macports.org_trunk_dports_databases_gdbm/gdbm/work/destroot-x86_64 and cannot be merged
Log for gdbm is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_svn.macports.org_trunk_dports_databases_gdbm/gdbm/main.log
Error: Unable to upgrade port: 1
Error: Unable to execute port: upgrade pkgconfig failed
To report a bug, see <http://guide.macports.org/#project.tickets>`
WHYYYYY ????
请参阅日志： http://pastebin.com/8s0MgHbR