I was doing a test build of zipios++ for rawhide in mock and when the build for the documentation was attempted I got an interesting (if unhelpful) error.

It looks like the make doc target uses convert for part of the documentation:

+ make V=1 doc
convert doc/images/zipios++.jpg doc/images/zipios++.eps
Makefile:808: recipe for target 'doc' failed
make: *** [doc] Illegal instruction (core dumped)

Doing this by hand in my f21 system seems to work.

Thanks,
Richard