Makefile: Make boolean variables use zero as disabled
Until now some variables had to be unset or set to NULL to disable their
respective features. This patch makes it possible to disable variables
by passing zero as a value.
BUG=b:206031372
TEST=make runtests
TEST=sudo emerge-guybrush sys-boot/depthcharge
BRANCH=none
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: I1c254ac8ea3237615a20334ba6a66c09a4abd791
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/3306615
Tested-by: Jakub Czapiga <czapiga@google.com>
Auto-Submit: Jakub Czapiga <czapiga@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Jakub Czapiga <czapiga@google.com>
1 file changed
