I've just made a test release of libffi called libffi-2.99.2.
It now installs platform dependent headers in
$(libdir)/libffi-VERSION/include. I've also created a libffi.pc file, so
use pkgconfig to find the headers.
Tar file here...
ftp://sourceware.org/pub/libffi/libffi-2.99.2.tar.gz
Fedora SRPM here...
http://spindazzle.org/Fedora/libffi-2.99.2-1.fc8.src.rpm
This version was tested on x86 and ppc64 linux.
I could use some help testing this release on other architectures.
Sending me the results of "make check" would be very helpful (and
patches even more so).
My plan is to make several more test releases until it looks good enough
to call 3.0. This will happen before the Fedora 9 freeze, because
IcedTea for power depends on this.