MPFR basics

[Kevin Ryde]

Sisyphus <kalinabears at iinet.net.au> writes:
>
> But as soon as I include the mpfr_set_str() call I get (multiple)
> undefined references to __gmpn_copyd and __gmpn_copyi.

You have to post the error messages if you want help.  And you already
know bug reports belong on bug-gmp.

If it's talking about "auto-import" then alas it's probably a lack of
COFF type directives in the gmp asm files.  The recent mingw
auto-import data scheme broke it, or at least made the lack of those
directives matter.

Try what Patrick said, a static-only build.