[Bug other/116119] Error building gcc 8.3.0

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116119

--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to maths soso from comment #7)
> I added to path of libgmp, libmpc, and libmpfr to LD_LIBRARY_PATH, and still.

Don't do that, just add the gmp, mpfr and mpc sources to the gcc tree and let
them be built automatically and linked to correctly by the gcc build process:
https://gcc.gnu.org/wiki/InstallingGCC