SOGo on OpenBSD/macppc
Thanks to sebastia@, I learned that SOGo was not build on OpenBSD/macppc (4.9) because GNUstep wasn’t:
# vi /usr/ports/x11/gnustep/gnustep.port.mk
ONLY_FOR_ARCHS = i386 amd64 macppc
# cd /usr/ports/www/sogo
# make install
Not even does it compile well but it also runs correctly ; at least during the few testings I did.