buildgcc: Don't request that optional tools be installed

Previously, when we tested for g++ and two different versions of clang,
if the earlier versions were not found, buildgcc would still request
that they be installed.  This obviously isn't needed, and isn't the
desired outcome.
Now, if one of the first tests fails, nothing gets printed.  If all
the tests fail, it tells you to install either g++ or clang.

Change-Id: I71359f59c4c6bee3c3c55e4e6105f11e6ca51527
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12852
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

0 files changed, 0 insertions, 0 deletions