(2012-10-08) Thanks to Kubo Takehiro, RubyEB is updated for ruby1.8 and 1.9 at https://github.com/kubo/rubyeb19
With eb-3.2.3, eb.c need a setting; #define HAVE_XBMSIZE_BUG 1.
Because of eb_***_font_xbm_size() malfunction.
With eb-4.0beta configured with --enable-pthread option, Uncomment the following line in extconf.rb
# $defs << '-DEBCONF_ENABLE_PTHREAD
It is not necessary for eb-3.x, eb-4.0 or eb-4.0beta with default configuration.
With eb-4.0, eb need a patch distributed from EB's site.
Acknowledgements is in Japanese page.Email: Author of RubyEB