在FreeBSD上从端口安装inkscape时出现此错误： 看起来像其他安装ghostscript9-base触发错误的inscape。请参阅下面的编译过程：
===> Installing for ghostscript9-base-9.06_11
===> ghostscript9-base-9.06_11 depends on file: /usr/local/share/ghostscript/fonts/a010013l.pfb - found
===> ghostscript9-base-9.06_11 depends on shared library: libexpat.so - found (/usr/local/lib/libexpat.so)
===> ghostscript9-base-9.06_11 depends on shared library: libfreetype.so - found (/usr/local/lib/libfreetype.so)
===> ghostscript9-base-9.06_11 depends on shared library: libidn.so - found (/usr/local/lib/libidn.so)
===> ghostscript9-base-9.06_11 depends on shared library: libjbig2dec.so - found (/usr/local/lib/libjbig2dec.so)
===> ghostscript9-base-9.06_11 depends on shared library: liblcms2.so - found (/usr/local/lib/liblcms2.so)
===> ghostscript9-base-9.06_11 depends on shared library: libpaper.so - found (/usr/local/lib/libpaper.so)
===> ghostscript9-base-9.06_11 depends on shared library: libpng.so - found (/usr/local/lib/libpng.so)
===> ghostscript9-base-9.06_11 depends on shared library: libtiff.so - found (/usr/local/lib/libtiff.so)
===> ghostscript9-base-9.06_11 depends on shared library: libfontconfig.so - found (/usr/local/lib/libfontconfig.so)
===> ghostscript9-base-9.06_11 depends on shared library: libcupsimage.so - found (/usr/local/lib/libcupsimage.so)
===> ghostscript9-base-9.06_11 depends on shared library: libvga.so - found (/usr/local/lib/libvga.so)
===> ghostscript9-base-9.06_11 depends on shared library: libjpeg.so - found (/usr/local/lib/libjpeg.so)
===> ghostscript9-base-9.06_11 depends on shared library: libiconv.so - found (/usr/local/lib/libiconv.so)
===> Checking if ghostscript9-base already installed
===> Registering installation for ghostscript9-base-9.06_11 as automatic
Installing ghostscript9-base-9.06_11...
pkg-static: ghostscript9-base-9.06_11 conflicts with ghostscript9-nox11-9.06_10 (installs files into the same place). Problematic file: /usr/local/bin/dvipdf
*** Error code 70
Stop in /usr/ports/print/ghostscript9-base.
*** Error code 1
Stop in /usr/ports/print/ghostscript9-base.
*** Error code 1
Stop in /usr/ports/print/texlive-base.
*** Error code 1
Stop in /usr/ports/print/texlive-texmf.
*** Error code 1
Stop in /usr/ports/print/tex-formats.
*** Error code 1
Stop in /usr/ports/devel/doxygen.
*** Error code 1
Stop in /usr/ports/devel/doxygen.
*** Error code 1
Stop in /usr/ports/textproc/librevenge.
*** Error code 1
Stop in /usr/ports/textproc/librevenge.
*** Error code 1
Stop in /usr/ports/graphics/inkscape.
*** Error code 1
Stop in /usr/ports/graphics/inkscape.
请问您如何解决这个问题？