[EMBOSS] libpng problems on Solaris 8, png.h version versus png.c version

[David Mathog]

This is making me nuts.  

plplot (re)compiled gdpng to create gdpng.o in ..../plplot/.libs,
yet it seems not to be putting it into the libraries.  
specify png as the output graphics type with polydot (for intance)
results in it bailing out with:

Devices allowed are:-
postscript
ps
hpgl
hp7470
hp7580
meta
colourps
cps
xwindows
x11
tektronics
tekt
tek4107t
tek
none
null
text
data
xterm
Error: Invalid graph value 'png'
Died: polydot terminated: Bad value for '-graph' with -auto defined

Again, how does one do a CLEAN (completely clean) rebuild?

Thanks,

David Mathog
mathog at caltech.edu
Manager, Sequence Analysis Facility, Biology Division, Caltech