tests/Makefile.common - chromiumos/platform/depthcharge - Git at Google

 # SPDX-License-Identifier: GPL-2.0

 # This file contains common definitions, macros and targets for depthcharge
 # unit-tests and screenshot utility. It requires list of defined variables:
 # - src - source directory
 # - testobj - build directory of tests
 # - objutil - utility programs/libraries output directory
 # - objext - external programs/libraries output directory

 # Set default path for EC_HEADERS if provided does not contain ec_headers.h
 EC_HEADERS ?= ../../src/ec/google/chromeec
 ifeq ($(wildcard $(EC_HEADERS)/ec_commands.h),)
 EC_HEADERS := ../ec/include
 endif
 ifeq ($(wildcard $(EC_HEADERS)/ec_commands.h),)
 $(error Please set EC_HEADERS= to directory containing ec_commands.h!)
 endif

 # coreboot source directory - for commonlib/bsd includes
 CB_SOURCE ?= ../coreboot
 ifeq ($(wildcard $(CB_SOURCE)),)
 # If directory pointed by CB_SOURCE is empty then assume coreboot
 # is in the Chromium OS SDK directory
 CB_SOURCE := ../../third_party/coreboot
 endif
 ifeq ($(wildcard $(CB_SOURCE)),)
 $(error Please set CB_SOURCE= to directory containing coreboot sources!)
 endif

 # Libpayload source directory in the coreboot project
 LP_SOURCE ?= ../libpayload
 ifeq ($(wildcard $(LP_SOURCE)),)
 # If directory pointed by LP_SOURCE is empty then assume libpayload
 # is in the Chromium OS SDK coreboot directory
 LP_SOURCE := ../../third_party/coreboot/payloads/libpayload
 endif
 ifeq ($(wildcard $(LP_SOURCE)),)
 $(error Please set LP_SOURCE= to directory containing libpayload sources!)
 endif

 # Path for depthcharge in coreboot/payloads
 VB_SOURCE = ../../3rdparty/vboot
 ifeq ($(wildcard $(VB_SOURCE)),)
 # Path for depthcharge in Chromium OS SDK src/platform
 VB_SOURCE = ../vboot_reference
 endif
 ifeq ($(wildcard $(VB_SOURCE)),)
 $(error Please set VB_SOURCE= to the vboot source directory!)
 endif
 VB_SOURCE := $(abspath $(VB_SOURCE))

 testsrc := $(src)/tests

 corebootsrc := $(CB_SOURCE)
 libpayloadsrc := $(LP_SOURCE)
 libpayloadobj := $(objext)/libpayload

 LIBPAYLOAD_DESTDIR := $(abspath $(libpayloadobj)/install)
 LIBPAYLOAD_ROOT := $(LIBPAYLOAD_DESTDIR)/libpayload
 LIBPAYLOAD_LIB := $(LIBPAYLOAD_ROOT)/lib/libpayload.a

 LIBPAYLOAD_DEFCONFIG := $(libpayloadsrc)/configs/defconfig
 LIBPAYLOAD_DOTCONFIG := $(libpayloadobj)/.config
 LIBPAYLOAD_KCONFIG_AUTOHEADER := $(libpayloadobj)/config.h
 LIBPAYLOAD_KCONFIG_AUTOCONFIG := $(libpayloadobj)/auto.conf
 LIBPAYLOAD_KCONFIG_DEPENDENCIES := $(libpayloadobj)/auto.conf.cmd
 LIBPAYLOAD_KCONFIG_SPLITCONFIG := $(libpayloadobj)/config/
 LIBPAYLOAD_KCONFIG_TRISTATE := $(libpayloadobj)/tristate.conf
 LIBPAYLOAD_CONFIG := $(libpayloadobj)/libpayload-config.h

 CMAKE := cmake
 OBJCOPY ?= objcopy
 OBJDUMP ?= objdump

 TEST_CFLAGS :=
 TEST_LDFLAGS :=

 # Include generic test mock headers, before original ones
 TEST_CFLAGS += -I$(testsrc)/include/mocks -I$(testsrc)/include

 # Depthcharge includes
 TEST_CFLAGS += -I$(testobj) -I$(src)/src

 # vboot_reference and ec-headers
 TEST_CFLAGS += -I$(LIBPAYLOAD_ROOT)/vboot/include -I$(EC_HEADERS)

 # Libpayload flags
 TEST_CFLAGS += -D__LIBPAYLOAD__=1
 TEST_CFLAGS += -I$(libpayloadobj)
 TEST_CFLAGS += -I$(LIBPAYLOAD_ROOT)/include -I $(LIBPAYLOAD_ROOT)/include/mock
 TEST_CFLAGS += -I$(corebootsrc)/src/commonlib/bsd/include
 TEST_CFLAGS += -include $(LIBPAYLOAD_ROOT)/include/kconfig.h
 TEST_CFLAGS += -include $(LIBPAYLOAD_ROOT)/include/compiler.h

 # Note: This is intentionally just a subset of the warnings in the toplevel
 # Makefile.inc. We don't need to be as strict with test code, and things like
 # -Wmissing-prototypes just make working with the test framework cumbersome.
 # Only put conservative warnings here that really detect code that's obviously
 # unintentional.
 TEST_CFLAGS += -Wall -Werror -Wundef -Wstrict-prototypes

 TEST_CFLAGS += -std=gnu11 -Os
 TEST_CFLAGS += -ffunction-sections -fdata-sections -fno-builtin

 ifneq ($(filter-out 0,$(TEST_PRINT)),)
 TEST_CFLAGS += -D__TEST_PRINT__=1
 endif

 TEST_LDFLAGS += -Wl,--gc-sections -no-pie

 # Extra attributes for unit tests, declared per test
 attributes := srcs cflags config mocks

 # Copy attributes of one test to another.
 # $1 - input test name
 # $2 - output test name
 copy-test = $(foreach attr,$(attributes), \
 		$(eval $(strip $(2))-$(attr) := $($(strip $(1))-$(attr))))

 default_mocks-srcs := src/vboot/callbacks/debug.c \
 	tests/mocks/console.c \
 	tests/mocks/halt.c \
 	tests/mocks/timer.c \
 	tests/mocks/util/commonparams.c
 default_mocks := console_write halt vb2ex_abort vb2ex_printf vboot_get_context

 # Create actual targets for unit test binaries
 # $1 - test name
 #
 # Generate config file using values provided in $(1)-config property.
 # Add required libraries if requested by $(1)-props.
 # Enable wrapping of mocked symbols
 define TEST_CC_template

 $(1)-libpayload := $(testobj)/$(1)/$$(notdir $(LIBPAYLOAD_LIB))
 $$($(1)-libpayload): $(LIBPAYLOAD_LIB)
 	mkdir -p $$(dir $$@)
 	$(OBJCOPY) $$^ $$(foreach mock,$$($(1)-mocks), \
 		--globalize-symbol=$$(mock) --weaken-symbol=$$(mock)) $$@

 $(1)-config-file := $(testobj)/$(1)/config.h
 $$($(1)-config-file): $$($(1)-libpayload)
 	mkdir -p $$(dir $$@)
 	printf '// File generated by tests/Makefile.inc\n// Do not change\n\n' > $$@;
 	printf '#ifndef TEST_DEPTHCHARGE_CONFIG_H_\n' >> $$@;
 	printf '#define TEST_DEPTHCHARGE_CONFIG_H_\n' >> $$@;
 	for kv in $$($(1)-config); do \
 		key="`echo $$$$kv | cut -d '=' -f -1`"; \
 		value="`echo $$$$kv | cut -d '=' -f 2-`"; \
 		printf '#undef %s\n' "$$$$key" >> $$@; \
 		printf '#define %s %s\n\n' "$$$$key" "$$$$value" >> $$@; \
 	done
 	printf '#ifdef __clang__\n' >> $$@;
 	printf '#pragma clang system_header\n' >> $$@;
 	printf '#endif\n' >> $$@;
 	printf '#ifdef __TEST_SRCOBJ__\n' >> $$@;
 	for m in $$($(1)-mocks); do \
 		printf '#pragma weak %s\n' "$$$$m" >> $$@; \
 	done
 	printf '#endif\n' >> $$@;
 	printf '#endif\n' >> $$@;

 $(1)-mocks += $(default_mocks)

 # Weaken symbols listed as mocks to enable overriding in the code
 $($(1)-srcobjs): TEST_CFLAGS += -D__TEST_SRCOBJ__

 # Compile sources and apply mocking/wrapping of selected symbols.
 # For each listed mock add new symbol with prefix `__real_`,
 # and pointing to the same section:address.
 $($(1)-objs): TEST_CFLAGS += -include $$($(1)-config-file)
 $($(1)-objs): $(testobj)/$(1)/%.o: $$$$*.c $$($(1)-config-file) $(LIBPAYLOAD_CONFIG)
 	@printf "    CC       $$(subst $$(testobj)/,,$$(@))\n"
 	mkdir -p $$(dir $$@)
 	$(HOSTCC) $(HOSTCFLAGS) $$(TEST_CFLAGS) $($(1)-cflags) -MMD \
 		-MF $$(basename $$@).d -MT $$@ -c $$< -o $$@.orig
 	@printf "    OBJCOPY  $$(subst $$(testobj)/,,$$(@))\n"
 	$(OBJCOPY) $$@.orig $$(OBJCOPY_FLAGS) $$@.orig2
 	objcopy_wrap_flags=''; \
 	for sym in $$($(1)-mocks); do \
 		sym_line="$$$$($(OBJDUMP) -t $$@.orig2 | grep -E "[0-9a-fA-F]+\\s+w\\s+F\\s+.*\\s$$$$sym$$$$")"; \
 		if [ ! -z "$$$$sym_line" ] ; then \
 			addr="$$$$(echo "$$$$sym_line" | awk '{ print $$$$1 }')"; \
 			section="$$$$(echo "$$$$sym_line" | awk '{ print $$$$(NF - 2) }')"; \
 			objcopy_wrap_flags="$$$$objcopy_wrap_flags --add-symbol __real_$$$${sym}=$$$${section}:0x$$$${addr},function,global"; \
 		fi \
 	done ;\
 	$(OBJCOPY) $$@.orig2 $$$$objcopy_wrap_flags $$@

 $($(1)-bin): $($(1)-objs) $$($(1)-libpayload)
 	@printf "    CC       $$(subst $$(testobj)/,,$$(@))\n"
 	mkdir -p $$(dir $$@)
 	$(HOSTCC) $$(TEST_LDFLAGS) -lcmocka $$^ \
 		-Wl,--exclude-libs,ALL -lc $($(1)-cflags) -o $$@
 endef

 # Configure and build libpayload from sources
 $(LIBPAYLOAD_DOTCONFIG):
 	mkdir -p $(dir $@)
 	cp $(LIBPAYLOAD_DEFCONFIG) $@
 	printf '\nCONFIG_LP_CHROMEOS=y\n' >> $@;
 	printf '\nCONFIG_LP_ARCH_MOCK=y\n' >> $@;
 	printf '\nCONFIG_LP_VBOOT_LIB=y\n' >> $@;
 	printf '\nCONFIG_LP_VBOOT_TPM2_MODE=y\n' >> $@;
 	byte_order="x`python -c 'import sys; print(sys.byteorder)' 2>&1`"; \
 	if [ "$$byte_order" == "xbig" ] ; then \
 		printf '\nCONFIG_LP_ARCH_MOCK_BIG_ENDIAN=y\n' >> $@; \
 	elif [ "$$byte_order" == "xlittle" ] ; then \
 		printf '\nCONFIG_LP_ARCH_MOCK_BIG_ENDIAN=n\n' >> $@; \
 	else \
 		echo 'Failed to get machine byte order'; \
 		exit 1; \
 	fi

 $(LIBPAYLOAD_KCONFIG_AUTOHEADER): LIBPAYLOAD_KCONFIG_FLAGS := \
 	DOTCONFIG=$(LIBPAYLOAD_DOTCONFIG) \
 	KCONFIG_AUTOHEADER=$(LIBPAYLOAD_KCONFIG_AUTOHEADER) \
 	KCONFIG_AUTOCONFIG=$(LIBPAYLOAD_KCONFIG_AUTOCONFIG) \
 	KCONFIG_DEPENDENCIES=$(LIBPAYLOAD_KCONFIG_DEPENDENCIES) \
 	KCONFIG_SPLITCONFIG=$(LIBPAYLOAD_KCONFIG_SPLITCONFIG) \
 	KCONFIG_TRISTATE=$(LIBPAYLOAD_KCONFIG_TRISTATE) \
 	KBUILD_DEFCONFIG=$(LIBPAYLOAD_DEFCONFIG)

 $(LIBPAYLOAD_KCONFIG_AUTOHEADER): $(LIBPAYLOAD_DOTCONFIG)
 	mkdir -p $(dir $@)
 	+$(MAKE) $(LIBPAYLOAD_KCONFIG_FLAGS) -C $(libpayloadsrc) \
 		obj=$(libpayloadobj) olddefconfig
 	+$(MAKE) $(LIBPAYLOAD_KCONFIG_FLAGS) -C $(libpayloadsrc) \
 		obj=$(libpayloadobj) oldconfig

 $(LIBPAYLOAD_LIB): $(LIBPAYLOAD_KCONFIG_AUTOHEADER)
 	@printf "    MAKE       $(subst $(testobj)/,,$(@))\n"
 	+unset CFLAGS CXXFLAGS LDFLAGS COV && $(MAKE) -C $(libpayloadsrc) \
 		HOSTCC=$(HOSTCC) CC=$(HOSTCC) CXX=$(HOSTCXX) AR=$(HOSTAR) AS=$(HOSTAS) \
 		obj=$(libpayloadobj) DOTCONFIG=$(LIBPAYLOAD_DOTCONFIG) V=$(V) \
 		VBOOT_SOURCE=$(VB_SOURCE) \
 		EXTRA_CFLAGS="-Wno-address-of-packed-member"
 	$(MAKE) -C $(libpayloadsrc) obj=$(libpayloadobj) install \
 		DESTDIR=$(LIBPAYLOAD_DESTDIR) V=$(V) VBOOT_SOURCE=$(VB_SOURCE) \
 		DOTCONFIG=$(LIBPAYLOAD_DOTCONFIG)

 $(LIBPAYLOAD_CONFIG): $(LIBPAYLOAD_KCONFIG_AUTOHEADER)
 	mkdir -p $(dir $@)
 	cp $< $@
	# SPDX-License-Identifier: GPL-2.0

	# This file contains common definitions, macros and targets for depthcharge
	# unit-tests and screenshot utility. It requires list of defined variables:
	# - src - source directory
	# - testobj - build directory of tests
	# - objutil - utility programs/libraries output directory
	# - objext - external programs/libraries output directory

	# Set default path for EC_HEADERS if provided does not contain ec_headers.h
	EC_HEADERS ?= ../../src/ec/google/chromeec
	ifeq ($(wildcard $(EC_HEADERS)/ec_commands.h),)
	EC_HEADERS := ../ec/include
	endif
	ifeq ($(wildcard $(EC_HEADERS)/ec_commands.h),)
	$(error Please set EC_HEADERS= to directory containing ec_commands.h!)
	endif

	# coreboot source directory - for commonlib/bsd includes
	CB_SOURCE ?= ../coreboot
	ifeq ($(wildcard $(CB_SOURCE)),)
	# If directory pointed by CB_SOURCE is empty then assume coreboot
	# is in the Chromium OS SDK directory
	CB_SOURCE := ../../third_party/coreboot
	endif
	ifeq ($(wildcard $(CB_SOURCE)),)
	$(error Please set CB_SOURCE= to directory containing coreboot sources!)
	endif

	# Libpayload source directory in the coreboot project
	LP_SOURCE ?= ../libpayload
	ifeq ($(wildcard $(LP_SOURCE)),)
	# If directory pointed by LP_SOURCE is empty then assume libpayload
	# is in the Chromium OS SDK coreboot directory
	LP_SOURCE := ../../third_party/coreboot/payloads/libpayload
	endif
	ifeq ($(wildcard $(LP_SOURCE)),)
	$(error Please set LP_SOURCE= to directory containing libpayload sources!)
	endif

	# Path for depthcharge in coreboot/payloads
	VB_SOURCE = ../../3rdparty/vboot
	ifeq ($(wildcard $(VB_SOURCE)),)
	# Path for depthcharge in Chromium OS SDK src/platform
	VB_SOURCE = ../vboot_reference
	endif
	ifeq ($(wildcard $(VB_SOURCE)),)
	$(error Please set VB_SOURCE= to the vboot source directory!)
	endif
	VB_SOURCE := $(abspath $(VB_SOURCE))

	testsrc := $(src)/tests

	corebootsrc := $(CB_SOURCE)
	libpayloadsrc := $(LP_SOURCE)
	libpayloadobj := $(objext)/libpayload

	LIBPAYLOAD_DESTDIR := $(abspath $(libpayloadobj)/install)
	LIBPAYLOAD_ROOT := $(LIBPAYLOAD_DESTDIR)/libpayload
	LIBPAYLOAD_LIB := $(LIBPAYLOAD_ROOT)/lib/libpayload.a

	LIBPAYLOAD_DEFCONFIG := $(libpayloadsrc)/configs/defconfig
	LIBPAYLOAD_DOTCONFIG := $(libpayloadobj)/.config
	LIBPAYLOAD_KCONFIG_AUTOHEADER := $(libpayloadobj)/config.h
	LIBPAYLOAD_KCONFIG_AUTOCONFIG := $(libpayloadobj)/auto.conf
	LIBPAYLOAD_KCONFIG_DEPENDENCIES := $(libpayloadobj)/auto.conf.cmd
	LIBPAYLOAD_KCONFIG_SPLITCONFIG := $(libpayloadobj)/config/
	LIBPAYLOAD_KCONFIG_TRISTATE := $(libpayloadobj)/tristate.conf
	LIBPAYLOAD_CONFIG := $(libpayloadobj)/libpayload-config.h

	CMAKE := cmake
	OBJCOPY ?= objcopy
	OBJDUMP ?= objdump

	TEST_CFLAGS :=
	TEST_LDFLAGS :=

	# Include generic test mock headers, before original ones
	TEST_CFLAGS += -I$(testsrc)/include/mocks -I$(testsrc)/include

	# Depthcharge includes
	TEST_CFLAGS += -I$(testobj) -I$(src)/src

	# vboot_reference and ec-headers
	TEST_CFLAGS += -I$(LIBPAYLOAD_ROOT)/vboot/include -I$(EC_HEADERS)

	# Libpayload flags
	TEST_CFLAGS += -D__LIBPAYLOAD__=1
	TEST_CFLAGS += -I$(libpayloadobj)
	TEST_CFLAGS += -I$(LIBPAYLOAD_ROOT)/include -I $(LIBPAYLOAD_ROOT)/include/mock
	TEST_CFLAGS += -I$(corebootsrc)/src/commonlib/bsd/include
	TEST_CFLAGS += -include $(LIBPAYLOAD_ROOT)/include/kconfig.h
	TEST_CFLAGS += -include $(LIBPAYLOAD_ROOT)/include/compiler.h

	# Note: This is intentionally just a subset of the warnings in the toplevel
	# Makefile.inc. We don't need to be as strict with test code, and things like
	# -Wmissing-prototypes just make working with the test framework cumbersome.
	# Only put conservative warnings here that really detect code that's obviously
	# unintentional.
	TEST_CFLAGS += -Wall -Werror -Wundef -Wstrict-prototypes

	TEST_CFLAGS += -std=gnu11 -Os
	TEST_CFLAGS += -ffunction-sections -fdata-sections -fno-builtin

	ifneq ($(filter-out 0,$(TEST_PRINT)),)
	TEST_CFLAGS += -D__TEST_PRINT__=1
	endif

	TEST_LDFLAGS += -Wl,--gc-sections -no-pie

	# Extra attributes for unit tests, declared per test
	attributes := srcs cflags config mocks

	# Copy attributes of one test to another.
	# $1 - input test name
	# $2 - output test name
	copy-test = $(foreach attr,$(attributes), \
	$(eval $(strip $(2))-$(attr) := $($(strip $(1))-$(attr))))

	default_mocks-srcs := src/vboot/callbacks/debug.c \
	tests/mocks/console.c \
	tests/mocks/halt.c \
	tests/mocks/timer.c \
	tests/mocks/util/commonparams.c
	default_mocks := console_write halt vb2ex_abort vb2ex_printf vboot_get_context

	# Create actual targets for unit test binaries
	# $1 - test name
	#
	# Generate config file using values provided in $(1)-config property.
	# Add required libraries if requested by $(1)-props.
	# Enable wrapping of mocked symbols
	define TEST_CC_template

	$(1)-libpayload := $(testobj)/$(1)/$$(notdir $(LIBPAYLOAD_LIB))
	$$($(1)-libpayload): $(LIBPAYLOAD_LIB)
	mkdir -p $$(dir $$@)
	$(OBJCOPY) $$^ $$(foreach mock,$$($(1)-mocks), \
	--globalize-symbol=$$(mock) --weaken-symbol=$$(mock)) $$@

	$(1)-config-file := $(testobj)/$(1)/config.h
	$$($(1)-config-file): $$($(1)-libpayload)
	mkdir -p $$(dir $$@)
	printf '// File generated by tests/Makefile.inc\n// Do not change\n\n' > $$@;
	printf '#ifndef TEST_DEPTHCHARGE_CONFIG_H_\n' >> $$@;
	printf '#define TEST_DEPTHCHARGE_CONFIG_H_\n' >> $$@;
	for kv in $$($(1)-config); do \
	key="`echo $$$$kv \| cut -d '=' -f -1`"; \
	value="`echo $$$$kv \| cut -d '=' -f 2-`"; \
	printf '#undef %s\n' "$$$$key" >> $$@; \
	printf '#define %s %s\n\n' "$$$$key" "$$$$value" >> $$@; \
	done
	printf '#ifdef __clang__\n' >> $$@;
	printf '#pragma clang system_header\n' >> $$@;
	printf '#endif\n' >> $$@;
	printf '#ifdef __TEST_SRCOBJ__\n' >> $$@;
	for m in $$($(1)-mocks); do \
	printf '#pragma weak %s\n' "$$$$m" >> $$@; \
	done
	printf '#endif\n' >> $$@;
	printf '#endif\n' >> $$@;

	$(1)-mocks += $(default_mocks)

	# Weaken symbols listed as mocks to enable overriding in the code
	$($(1)-srcobjs): TEST_CFLAGS += -D__TEST_SRCOBJ__

	# Compile sources and apply mocking/wrapping of selected symbols.
	# For each listed mock add new symbol with prefix `__real_`,
	# and pointing to the same section:address.
	$($(1)-objs): TEST_CFLAGS += -include $$($(1)-config-file)
	$($(1)-objs): $(testobj)/$(1)/%.o: $$$$*.c $$($(1)-config-file) $(LIBPAYLOAD_CONFIG)
	@printf " CC $$(subst $$(testobj)/,,$$(@))\n"
	mkdir -p $$(dir $$@)
	$(HOSTCC) $(HOSTCFLAGS) $$(TEST_CFLAGS) $($(1)-cflags) -MMD \
	-MF $$(basename $$@).d -MT $$@ -c $$< -o $$@.orig
	@printf " OBJCOPY $$(subst $$(testobj)/,,$$(@))\n"
	$(OBJCOPY) $$@.orig $$(OBJCOPY_FLAGS) $$@.orig2
	objcopy_wrap_flags=''; \
	for sym in $$($(1)-mocks); do \
	sym_line="$$$$($(OBJDUMP) -t $$@.orig2 \| grep -E "[0-9a-fA-F]+\\s+w\\s+F\\s+.*\\s$$$$sym$$$$")"; \
	if [ ! -z "$$$$sym_line" ] ; then \
	addr="$$$$(echo "$$$$sym_line" \| awk '{ print $$$$1 }')"; \
	section="$$$$(echo "$$$$sym_line" \| awk '{ print $$$$(NF - 2) }')"; \
	objcopy_wrap_flags="$$$$objcopy_wrap_flags --add-symbol __real_$$$${sym}=$$$${section}:0x$$$${addr},function,global"; \
	fi \
	done ;\
	$(OBJCOPY) $$@.orig2 $$$$objcopy_wrap_flags $$@

	$($(1)-bin): $($(1)-objs) $$($(1)-libpayload)
	@printf " CC $$(subst $$(testobj)/,,$$(@))\n"
	mkdir -p $$(dir $$@)
	$(HOSTCC) $$(TEST_LDFLAGS) -lcmocka $$^ \
	-Wl,--exclude-libs,ALL -lc $($(1)-cflags) -o $$@
	endef

	# Configure and build libpayload from sources
	$(LIBPAYLOAD_DOTCONFIG):
	mkdir -p $(dir $@)
	cp $(LIBPAYLOAD_DEFCONFIG) $@
	printf '\nCONFIG_LP_CHROMEOS=y\n' >> $@;
	printf '\nCONFIG_LP_ARCH_MOCK=y\n' >> $@;
	printf '\nCONFIG_LP_VBOOT_LIB=y\n' >> $@;
	printf '\nCONFIG_LP_VBOOT_TPM2_MODE=y\n' >> $@;
	byte_order="x`python -c 'import sys; print(sys.byteorder)' 2>&1`"; \
	if [ "$$byte_order" == "xbig" ] ; then \
	printf '\nCONFIG_LP_ARCH_MOCK_BIG_ENDIAN=y\n' >> $@; \
	elif [ "$$byte_order" == "xlittle" ] ; then \
	printf '\nCONFIG_LP_ARCH_MOCK_BIG_ENDIAN=n\n' >> $@; \
	else \
	echo 'Failed to get machine byte order'; \
	exit 1; \
	fi

	$(LIBPAYLOAD_KCONFIG_AUTOHEADER): LIBPAYLOAD_KCONFIG_FLAGS := \
	DOTCONFIG=$(LIBPAYLOAD_DOTCONFIG) \
	KCONFIG_AUTOHEADER=$(LIBPAYLOAD_KCONFIG_AUTOHEADER) \
	KCONFIG_AUTOCONFIG=$(LIBPAYLOAD_KCONFIG_AUTOCONFIG) \
	KCONFIG_DEPENDENCIES=$(LIBPAYLOAD_KCONFIG_DEPENDENCIES) \
	KCONFIG_SPLITCONFIG=$(LIBPAYLOAD_KCONFIG_SPLITCONFIG) \
	KCONFIG_TRISTATE=$(LIBPAYLOAD_KCONFIG_TRISTATE) \
	KBUILD_DEFCONFIG=$(LIBPAYLOAD_DEFCONFIG)

	$(LIBPAYLOAD_KCONFIG_AUTOHEADER): $(LIBPAYLOAD_DOTCONFIG)
	mkdir -p $(dir $@)
	+$(MAKE) $(LIBPAYLOAD_KCONFIG_FLAGS) -C $(libpayloadsrc) \
	obj=$(libpayloadobj) olddefconfig
	+$(MAKE) $(LIBPAYLOAD_KCONFIG_FLAGS) -C $(libpayloadsrc) \
	obj=$(libpayloadobj) oldconfig

	$(LIBPAYLOAD_LIB): $(LIBPAYLOAD_KCONFIG_AUTOHEADER)
	@printf " MAKE $(subst $(testobj)/,,$(@))\n"
	+unset CFLAGS CXXFLAGS LDFLAGS COV && $(MAKE) -C $(libpayloadsrc) \
	HOSTCC=$(HOSTCC) CC=$(HOSTCC) CXX=$(HOSTCXX) AR=$(HOSTAR) AS=$(HOSTAS) \
	obj=$(libpayloadobj) DOTCONFIG=$(LIBPAYLOAD_DOTCONFIG) V=$(V) \
	VBOOT_SOURCE=$(VB_SOURCE) \
	EXTRA_CFLAGS="-Wno-address-of-packed-member"
	$(MAKE) -C $(libpayloadsrc) obj=$(libpayloadobj) install \
	DESTDIR=$(LIBPAYLOAD_DESTDIR) V=$(V) VBOOT_SOURCE=$(VB_SOURCE) \
	DOTCONFIG=$(LIBPAYLOAD_DOTCONFIG)

	$(LIBPAYLOAD_CONFIG): $(LIBPAYLOAD_KCONFIG_AUTOHEADER)
	mkdir -p $(dir $@)
	cp $< $@