Comment 25 for bug 1638695

thanks for the detailed analysis.

 - #1: I'm stopping now to build the _fpectl module for the upcoming
   17.10 release. I'm hesitant to disable it for 16.04.

 - #2: 2.7.11-6: That's a fix done a year ago, I can't remember
   why I changed that. I'll try to remember ...
   _math.c is mentioned twice as a source file, same as
   timemodule.c

 - #3: if the above change is necessary, then yes, it should only
   be done for the shared builds, not the static ones.

   but starting with 17.04 we are building with -fPIE by default,
   which turns on PIC for everything again. So it is likely that
   you will see a decrease in performance again, unless the
   compiler go a little bit better in newer Ubuntu releases.

I'll look at #2 and try to come up with a non-invasive approach.