I have put zfsfuse into svn and also tried to compile but I failed.

zfsfuse is using scons to compile, not makefile. I found scons in QNX' pkgsrc project and I tried but got some errors. 
Sean said the errors are known bug.

If somebody is familiar with python it will be easier to fix or debug. Maybe we can try to compile it on Linux build 
machine with QNX development tools installed.