Thanks Jim. That worked. All I had to do on top of that was add "#include <math.h>" in pix_diff.h and everything compiled just fine.
Strange , I didn't have to add the #include <math.h> . Maybe a difference between RH7.1 and RH7.2 .
Did you get a lot of warnings about extra tokens at the end of ifdef's? I did, not quite sure why. But gem seems to
Yes I also got these warnings but Gem works fine.
Jim