cc/gcc: Apply CT_CC_GCC_DISABLE_PCH to do_cc_core.
Otherwise, users have to input --disable-libstdcxx-pch option
when building bare-metal CANADIAN C++ compiler.
Reviewed-by: Michael Hope
Signed-off-by: Zhenqiang Chen <zhenqiang.chen@linaro.org>
3 sys.path.insert(0, '@@PREFIX@@/share/gcc-@@VERSION@@/python')
4 from libstdcxx.v6.printers import register_libstdcxx_printers
5 register_libstdcxx_printers (None)