gcc 4.9.2 build from source

[dclarke blastwave.org]

> We're sadly aware of GCC's loud recommendation of severely obsolete
> software.
> 
> The right approach for GCC is to use a modern GMP, compile it with
> --disable-assembly, and link to it statically.

I just extract the tarball into the gcc source tree and everything
builds fine without any issues. This rev seems to work well :

node000 $ grep "__GNU_MP_VERSION" /usr/local/include/gmp.h
#define __GNU_MP_VERSION            6
#define __GNU_MP_VERSION_MINOR      0
#define __GNU_MP_VERSION_PATCHLEVEL 0
#define __GNU_MP_RELEASE (__GNU_MP_VERSION * 10000 +
__GNU_MP_VERSION_MINOR * 100 + __GNU_MP_VERSION_PATCHLEVEL)


Not bad results at all :

  https://gcc.gnu.org/ml/gcc-testresults/2014-10/msg01022.html


So I don't know what the issue is over at ye old GCC project but I have
seen no issues with gmp in a long while.  However, just for the sake of
giving the optimization levels a try I want to see if gmp can build on
Solaris 10 with the latest release of Oracle Studio 12.4.

I'll let you know.

Dennis