error installing Subversion

["Siju George" <sgeorge.ml%gmail.com@localhost>]

Hi,

I am trying to install Subversion from pkgsrc on NetBSD 4.0 and get this error.
How do I solve the problem?

==================================================
installing binary commands
installing command scripts
installing library scripts
installing headers
installing manpages
installing extension objects
installing extension scripts
Generating RDoc documentation
./miniruby  ./runruby.rb --extout=.ext -- "./bin/rdoc" --all --ri --op
".ext/rdoc" "."

Directory .ext/rdoc already exists, but it looks like it
isn't an RDoc directory. Because RDoc doesn't want to risk
destroying any of your existing files, you'll need to
specify a different output directory name (using the
--op <dir> option).

*** Error code 1
Stop.
make: stopped in /usr/pkgsrc/lang/ruby18-base/work/ruby-1.8.6-p114
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/lang/ruby18-base
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/lang/ruby18-base
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/lang/ruby18-base
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/devel/ruby-subversion
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/devel/subversion