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-4.4.4.orig/libiberty/Makefile.in gcc-4.4.4/libiberty/Makefile.in
2 --- gcc-4.4.4.orig/libiberty/Makefile.in 2008-10-22 15:30:19.000000000 +0200
3 +++ gcc-4.4.4/libiberty/Makefile.in 2010-05-16 19:13:20.000000000 +0200
5 $(AR) $(AR_FLAGS) $(TARGETLIB) \
6 $(REQUIRED_OFILES) $(EXTRA_OFILES) $(LIBOBJS); \
7 $(RANLIB) $(TARGETLIB); \
8 + cp $(TARGETLIB) ../ ; \