GMP and MPFR are no longer a sub-component of gcc (config-wise).
Build and install GMP and MPFR for the target.
Use the target GMP and MPFR to build the native gdb.
Have separate extra_config for cross gdb, native gdb and gdbserver.
Check native GMP and MPFR in //.

/trunk/scripts/build/debug/300-gdb.sh | 27 19 8 0 ++++++++++++++++-------
/trunk/scripts/build/gmp.sh | 47 39 8 0 ++++++++++++++++++++++++++++++++-------
/trunk/scripts/build/mpfr.sh | 49 40 9 0 +++++++++++++++++++++++++++++++++--------
/trunk/steps.mk | 2 2 0 0 ++
/trunk/config/cc/gcc.in | 18 1 17 0 +--------------
/trunk/config/debug/gdb.in | 6 1 5 0 +----
/trunk/config/config.in | 1 1 0 0 +
/trunk/config/gmp_mpfr.in | 34 34 0 0 ++++++++++++++++++++++++++++
8 files changed, 137 insertions(+), 47 deletions(-)

 # Compute x86-specific values

 # This one really need a little love! :-(

 CT_DoArchValues() {

     # The architecture part of the tuple:

     arch="${CT_ARCH_ARCH}"

     [ -z "${arch}" ] && arch="${CT_ARCH_TUNE}"

     case "${arch}" in

         nocona|athlon*64|k8|athlon-fx|opteron)

             CT_DoError "Architecture is x86 (32-bit) but selected processor is \"${arch}\" (64-bit)";;

         "")                           CT_TARGET_ARCH=i386;;

         i386|i486|i586|i686)          CT_TARGET_ARCH="${arch}";;

         winchip*)                     CT_TARGET_ARCH=i486;;

         pentium|pentium-mmx|c3*)      CT_TARGET_ARCH=i586;;

         pentiumpro|pentium*|athlon*)  CT_TARGET_ARCH=i686;;

         *)                            CT_TARGET_ARCH=i586;;

     esac

     # The kernel ARCH:

     CT_KERNEL_ARCH=i386

 }