> I removed the groff-current source directory, extracted the package,
> and maked again. I discovered something interesting. At first make,
> make stopped much earlier.
Indeed. It stops with a very mysterious error not related to groff at
all. Is it possible that your netpbm package is broken, containing a
bad `pnmtopng' executable? Can you call this program successfully at
all?
> "make clean". Maked again, things were different - it went on,
Because the call with pnmtopng produced an (invalid) gnu.png output
file which is not be removed by a `make clean' but by `make distclean'
only -- gnu.png is normally part of the tarball, not to be created by
a normal build.
> tbl went wrong at "mixed_pickles" just as described before. Note
> that pdfmark was ok this time.
You can test that manually: Simply say
tbl < mixed_pickles.roff > mixed_pickles.tbl
and check whether this call runs successful. Otherwise, please use
gdb to produce a backtrace.
Werner