I'm trying to build wxRuby 6.0 on Linux (Ubuntu). When I run make I get 
an error because htmlproc.h is not found (it does not exist in the Linux 
version of wxWidgets). I see that the html* object files are removed 
from $objs in the extconf.rb if /linux/ =~ RUBY_PLATFORM, but still the 
Makefile tries to build them.

$ ruby -v
ruby 1.8.2 (2004-08-24) [i386-linux]
$ wx-config --version
2.4.2