Good news: libdispatch r197 now builds and runs on Fedora Linux.
I have published unofficial source RPMs for libdispatch and it's Linux
dependencies (libkqueue, libpthread_workqueue, and libBlocksRuntime).
This will allow you to build libdispatch on Fedora 16, and hopefully
serve as a basis for porting to Red Hat Enterprise Linux and other
RPM-based distributions. Here's a link to the release page:
http://mark.heily.com/project/libdispatch/release/00197-f16
Cheers,
- Mark