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 --- gcc-4.2.1-stock/gcc/config/alpha/linux-unwind.h 2005-06-24 20:22:41.000000000 -0500
2 +++ gcc-4.2.1/gcc/config/alpha/linux-unwind.h 2007-09-01 20:21:34.000000000 -0500
3 @@ -29,6 +29,9 @@ Boston, MA 02110-1301, USA. */
4 /* Do code reading to identify a signal frame, and set the frame
5 state data appropriately. See unwind-dw2.c for the structs. */
7 +/* Don't use this if inhibit_libc is set
8 + The build for this target will fail trying to include missing headers */
11 #include <sys/ucontext.h>
13 @@ -80,3 +83,4 @@ alpha_fallback_frame_state (struct _Unwi
14 fs->retaddr_column = 64;
15 return _URC_NO_REASON;
17 +#endif /* inhibit_libc */