https://bugzilla.redhat.com/show_bug.cgi?id=1265685
--- Comment #6 from Ranjan Maitra itsme_410@yahoo.com --- Thanks! I tried this, but now I get errors, indeed lots of it. Can I send you personal e-mail?
Btw, my communication with Hiroyuki led me to believe that if I had sylpheed installed as a binary, then I should use --with-libsylph=builtin.