ports安装lftp遇到这样的问题怎么办？

emylekao

===>  Installing for expat-1.95.7
===>   Generating temporary packing list
===>  Checking if textproc/expat2 already installed
===>   An older version of textproc/expat2 is already installed (expat-1.95.6_1)      You may wish to ``make deinstall'' and install this port again
      by ``make reinstall'' to upgrade it properly.
      If you really wish to overwrite the old port of textproc/expat2
      without deleting it first, set the variable "FORCE_PKG_REGISTER"
      in your environment or the "make install" command line.
*** Error code 1

Stop in /usr/ports/textproc/expat2.
*** Error code 1

Stop in /usr/ports/devel/gettext.
*** Error code 1

Stop in /usr/ports/devel/gettext.
*** Error code 1

Trotk

看说明，很清楚了
An older version of textproc/expat2 is already installed (expat-1.95.6_1) You may wish to ``make deinstall'' and install this port again
by ``make reinstall'' to upgrade it properly.

congli

make FORCE_PKG_REGISTER=yes install clean

emylekao

搞不懂为什么，我用两个步骤
make
make install
就可以安装。