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
