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>
1 file changed