build system: add Chrome OS futility to tools

Change-Id: I08925d110c6faa9e37107d63bfa75d0ab677d379
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/13545
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>

util/futility/Makefile

@@ -0,0 +1,21 @@
+top ?= $(abspath ../..)
+objutil ?= $(top)/util
+
+HOSTCC ?= $(CC)
+VB_SOURCE ?= $(top)/3rdparty/vboot
+
+.PHONY: all
+all: $(objutil)/futility/futility
+
+.PHONY: clean
+clean:
+	$(RM) $(objutil)/futility/futility
+	$(RM) -r $(objutil)/futility/build
+
+ifneq ($(V),1)
+ifneq ($(Q),)
+.SILENT:
+endif
+endif
+
+include Makefile.inc

util/futility/Makefile.inc

@@ -0,0 +1,13 @@
+additional-dirs += $(objutil)/futility
+
+$(objutil)/futility/build/futility/futility:
+	@printf "    MAKE       $(subst $(objutil)/,,$(@))\n"
+	$(MAKE) -C $(VB_SOURCE) \
+		BUILD=$(abspath $@/../..) \
+		CC="$(HOSTCC)" \
+		V=$(V) \
+		$(abspath $@)
+
+$(objutil)/futility/futility: $(objutil)/futility/build/futility/futility
+	cp $< $@.tmp
+	mv $@.tmp $@