graphics/netpbm make install fails when done as non-root

[Lasse Hillerøe Petersen <lhp%toft-hp.dk@localhost>]

I am trying to install graphics/netpbm from pkgsrc-current on 
NetBSD-current as of 20061124

I get the following error:
...
gmake[1]: Entering directory 
`/usr/pkgsrc/graphics/netpbm/work/netpbm-10.34/buildtools'
gmake[1]: Nothing to be done for `install.man'.
gmake[1]: Leaving directory 
`/usr/pkgsrc/graphics/netpbm/work/netpbm-10.34/buildtools'
cd /usr/pkgsrc/graphics/netpbm/work/staging 
&&                                   /bin/mv link/* lib 
&&                                   /bin/rm -rf link man/web 
&&                             /bin/mkdir -p share/doc/netpbm 
&&                               /bin/cp 
/usr/pkgsrc/graphics/netpbm/work/netpbm-10.34/doc/* share/doc/netpbm 
&&                 mkdir man/man1 &&                               
/bin/mv share/doc/netpbm/*.1   man/man1 &&      /bin/mv misc 
share/netpbm &&                            /usr/sbin/chown -R root:wheel 
. &&                      /usr/bin/find * \! -type d -print | 
/usr/bin/sort >/usr/pkgsrc/graphics/netpbm/work/PLIST_STAGE &&      
/usr/bin/find * -type d -print |                                while 
read DIR; do                                      test -d 
"/usr/pkg/${DIR}" ||            echo "@dirrm ${DIR}";           done 
>>/usr/pkgsrc/graphics/netpbm/work/PLIST_STAGE 
&&                                  /bin/pax -rwpppm . /usr/pkg
mkdir: man/man1: File exists
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/graphics/netpbm
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/graphics/netpbm
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/graphics/netpbm

If I perform the make install with sudo, it succeeds.

-Lasse