Re: gmp/mpfr and multilib

[Brooks Moses <brooks dot moses at codesourcery dot com>]

Jack Howarth wrote:
>    Does anyone know how the changes for gcc to require gmp/mpfr will effect the
> multilib builds? In the past, gmp/mpfr in gfortran appeared to only be linked into
> the compiler itself so that a 32-bit/64-bit multilib build on Darwin PPC only
> required gmp/mpfr for 32-bit to be installed. Will any of the libraries in
> gcc now require gmp/mpfr such that both 32-bit and 64-bit versions of gmp/mpfr
> must be installed? If that is the case, will the multilib build look for both a
> lipo 32-bit/64-bit combined shared library in $prefix/lib as well as individual
> versions in lib and lib64 subdirectories?

So far as I know, gmp/mpfr is still only being used for compile-time 
evaluation of constant expressions (in order to do so in a way that's 
not dependent on the host's architecture, as it may be different from 
the target's architecture).  I don't believe that there's any intention 
of using it in a way that would make it useful to link into libraries.

- Brooks