esp-idf/components/bootloader/subproject/Makefile

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#
# This is a project Makefile. It is assumed the directory this Makefile resides in is a
# project subdirectory.
#
ifeq ("$(MAKELEVEL)","0")
$(error Bootloader makefile expects to be run as part of 'make bootloader' from a top-level project.)
endif
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PROJECT_NAME := bootloader
COMPONENTS := esptool_py bootloader_support log spi_flash micro-ecc soc main
# Clear C and CXX from top level project
CFLAGS =
CXXFLAGS =
#We cannot include the esp32 component directly but we need its includes.
CFLAGS += -I $(IDF_PATH)/components/esp32/include
# The bootloader pseudo-component is also included in this build, for its Kconfig.projbuild to be included.
#
# IS_BOOTLOADER_BUILD tells the component Makefile.projbuild to be a no-op
IS_BOOTLOADER_BUILD := 1
export IS_BOOTLOADER_BUILD
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# BOOTLOADER_BUILD macro is the same, for source file changes
CFLAGS += -D BOOTLOADER_BUILD=1
# include the top-level "project" include directory, for sdkconfig.h
CFLAGS += -I$(BUILD_DIR_BASE)/../include
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include $(IDF_PATH)/make/project.mk