not really a bug but somewhat odd : checking compiler /usr/local/bin/gcc8 ... no, mpn_lshift_com

[paul zimmermann]

       Hi Dennis,

> Dear gmp/mpfr folks :

this apparently has nothing to do with mpfr.

>From the error message in configure ("no, mpn_lshift_com optimization 2,
program does not run") you can conclude that your compiler is broken.
Please report to the compiler vendor.

Paul