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 ## select ARCH_SUPPORTS_32
4 ## select ARCH_SUPPORTS_64
5 ## select ARCH_DEFAULT_32
7 ## select ARCH_SUPPORT_ARCH
8 ## select ARCH_SUPPORT_CPU
9 ## select ARCH_SUPPORT_TUNE
11 ## help The x86 architecture, as defined by:
12 ## help 32-bit (ia32) : http://www.intel.com/
13 ## help 64-bit (amd64): http://www.amd.com/us-en/Processors/DevelopWithAMD/0,,30_2252_875_7044,00.html