util/crossgcc/buildgcc: correct clang test

On certain versions of /bin/sh the following sequence
causes problems.
'$CC --version | grep clang &>/dev/null && ...'

The above is a bashish for 2>&1 >/dev/null. However, buildgcc
is interpeted by /bin/sh which doesn't necessarily mean bash.
On dash it's effectively forking grep off into the background
and always evaluating an empty statement to /dev/null while
unconditionally running whatever follows the &&.

Change-Id: Ie3a2ebb12226434d50a7b2a7e254c8b80ae4c46b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14281
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

0 files changed, 0 insertions, 0 deletions