Don't force building target GMP and MPFR when a native gdb is built. Rather,
add a config knob to configure the native gdb to use or not to use GMP and
MPFR; _this_config_knob_ will force building the target GMP and MPFR only if
turned on.

/trunk/scripts/build/debug/300-gdb.sh | 2 1 1 0 +-
/trunk/config/debug/gdb.in | 21 19 2 0 +++++++++++++++++++--
2 files changed, 20 insertions(+), 3 deletions(-)

comment "ARM specific options"

config ARCH_ARM_EABI

    bool

    prompt "Use EABI (EXPERIMENTAL)"

    depends on EXPERIMENTAL

    default n

    help

      Set up the toolchain so that it generates EABI-compliant binaries.

config ARCH_ABI

    default "aapcs" if ARCH_ARM_EABI