InsightToolkit fails to build on rawhide due to missing SSE instructions

[Bruno Wolff III]

On Thu, May 21, 2015 at 13:21:19 +0200,
  Sebastian Pölsterl <sebp at k-d-w.org> wrote:
>
>I'm currently struggling to get InsightToolkit to build again for
>rawhide. Currently, the problem is that it cannot detect SSE
>instructions when using koji [1]. It worked for a previous build [2] and
>still works when doing mockbuild locally.

Aren't you supposed to test for SSE at runtime? Just because the machine 
doing the build has or doesn't have SSE, doesn't mean the machine that 
eventually runs the code will.