I'm writing a plugin (win32 dev environment) in which I need access to 
functionality in base64.x and crypt-md5.x.  I had been under the 
[faulty?] assumption that the object files for these two are compiled 
into libwireshark.lib, which is already being linked into my plugin:
...
LINK_PLUGIN_WITH=..\..\epan\libwireshark.lib
...
$(PLUGIN_NAME).dll $(PLUGIN_NAME).exp $(PLUGIN_NAME).lib : $(OBJECTS) 
$(LINK_PLUGIN_WITH)
   link -dll /out $(PLUGIN_NAME).dll $(LDFLAGS) $(OBJECTS) \
      $(LINK_PLUGIN_WITH) $(GLIB_LIBS) $(PCRE_LIBS) zdll.lib
...
 However, I still get the following link errors:
error: LNK2001: unresolved external symbol _md5_finish
error: LNK2001: unresolved external symbol _md5_append
error: LNK2001: unresolved external symbol _md5_init
error: LNK2001: unresolved external symbol _epan_base64_decode
 My apologies in advance for the likely noobish question, I'm just not 
sure what I need to link in, or what to alter.  I've not seen any 
examples of plugins that use them, and since the non-plugin dissectors 
are all linked either at compile or runtime when building wireshark 
itself, I'm supposing that I won't glean anything useful by looking at 
the wireshark/dissectors makefile (which hasn't stopped me from trying).
 If anyone has some suggestions, they'll be welcome.
-Brian