According to Paul B. Henson <henson@acm.org>:

The correct configuration for Solaris is to compile DCE-perl with *only* -ldce, and then recompile perl itself including at least the following libraries:

-ldce -lsocket -lnsl -lthread -lm

FYI, for Digital Unix 4.0, you only need '-ldce'.

For Digital Unix 3.2, you need '-ldce -lpthreads -lmach -lc_r'.