tree 5e14ca286499b1e707e62787c1d20ede9bd91f5d
parent db557477a2ee5432cfa42ab9cacccc71e2ddcb0c
author Martin Roth <martinroth@google.com> 1449264577 -0700
committer Martin Roth <martinroth@google.com> 1449589659 +0100

toolchain.inc: verify tool variable validity before using it.

If the toolchain for a stage/architecture wasn't present, we'd call the
shell with '-v', generating an ugly warning:

/bin/sh: - : invalid option
Usage:  /bin/sh [GNU long option] [option] ...
        /bin/sh [GNU long option] [option] script-file ...
GNU long options:
...

Change-Id: Icd6d7a00083ee1695591ff96da36b7868be0c2f0
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12649
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>