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 reporter_name="Julien DUSSER"
2 reporter_url="http://sourceware.org/ml/crossgcc/2008-10/msg00054.html"
3 reporter_comment="Soft-float for the 405 PowerPC"