Yesterday, i try to build distribution using the daily source (I've
currently 1.6ZF userland). But the compilation fails on
/usr/src/gnu/usr.bin/groff with the following errors 

#    create  libgroff/cmap.d
CC=/usr/build_tmp/objdir/bin/i386--netbsdelf-gcc
/usr/build_tmp/objdir/bin/nbmkdep -f cmap.d --    -nostdinc++ -isystem-cxx
/usr/build_tmp/destdir/usr/include/g++     -nostdinc -isystem
/usr/build_tmp/destdir/usr/include
/usr/src/gnu/dist/groff/src/libs/libgroff/cmap.cpp
/usr/src/gnu/dist/groff/src/libs/libgroff/cmap.cpp:24:18: cmap.h: No such
file or directory
nbmkdep: compile failed.

i try after cleaning $DESTDIR $OBJDIR and without any options into mk.conf.

Have someone already noticed this problem ? Any solution ?