vboot_reference: Build host tools conditionally.

Some of the tools and utilities in vboot_reference do not build
with sanitizers enabled. To avoid this, do not build them
when NO_BUILD_TOOLS is defined.

TEST=USE="fuzzer" emerge-amd64-generic vboot_reference does not build host tools
TEST=emerge-falco vboot_reference builds all tools.

Change-Id: If238c98d4058db20765731237153bc6969a06375
Reviewed-on: https://chromium-review.googlesource.com/1060154
Commit-Ready: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
1 file changed