cc/gcc: Set CXX_FOR_BUILD for bare metal and canadian build.
>From 4.8, g++ is used as the default compiler to build the toolchain.
Signed-off-by: Zhenqiang Chen <zhenqiang.chen@linaro.org>
Message-Id: <CACgzC7B-LQvAw3hOYhBA7b7g0H1WtH20gqXM=Y=YFO4FrnZKWQ@mail.gmail.com>
Patchwork-Id: 243590
1 CT_LOCAL_TARBALLS_DIR="${HOME}/src"
8 CT_LIBC_NEWLIB_V_1_17_0=y
10 CT_LIBC_NEWLIB_IO_FLOAT=y
11 CT_LIBC_NEWLIB_DISABLE_SUPPLIED_SYSCALLS=y