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>
(transplanted from e3e1c9d45bddfbfb433ee9d583faf42fa31f50c0)
1 diff -durN gcc-4.4.5.orig/gcc/config/netbsd-elf.h gcc-4.4.5/gcc/config/netbsd-elf.h
2 --- gcc-4.4.5.orig/gcc/config/netbsd-elf.h 2007-09-03 18:14:04.000000000 +0200
3 +++ gcc-4.4.5/gcc/config/netbsd-elf.h 2010-10-09 22:59:57.000000000 +0200
5 #define NETBSD_LINK_SPEC_ELF \
6 "%{assert*} %{R*} %{rpath*} \
8 + %{symbolic:-Bsymbolic} \