Comment # 6 on bug 1124091 from Markku Pulkkinen

I removed mpfr-devel package that I installed from openSUSE Tumbleweed
repository and also static mpfr library that I have build by myself.

By removing the static mpfr lib build seems to solve the problem.

I'm developing app that uses flint library and it depends on gmp and mpfr libs.
The static lib provides a bit better performance and that was the reason why I
build it by myself from sources from mpfr repository. 

For some strange reason the default mpfr build uses for compiling march=skylake
and mtune=skylake params even my HP laptop's CPU is sandybridge. So I suppose
this was the root cause for the problem, illegal instruction.

I'm sorry for the bug report that seems to be caused by my mpfr custom build. I
couldn't imagine it would cause compiler failure when doing the build, just
run-time failure when running app if lib is build for wrong march and
unsupported instruction set.