OVMS3-idf/components/app_update/component.mk

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#
# Component Makefile
#
# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)
# esp_app_desc structure is added as an undefined symbol because otherwise the
# linker will ignore this structure as it has no other files depending on it.
COMPONENT_ADD_LDFLAGS += -u esp_app_desc
ifndef IS_BOOTLOADER_BUILD
GET_PROJECT_VER ?=
ifeq ("${PROJECT_VER}", "")
ifeq ("$(wildcard ${PROJECT_PATH}/version.txt)","")
GET_PROJECT_VER := $(shell cd ${PROJECT_PATH} && git describe --always --tags --dirty || echo "Not found git repo")
ifeq ("${GET_PROJECT_VER}", "Not found git repo")
$(info Project do not have git repo, it needs to get PROJECT_VER from `git describe` command.)
GET_PROJECT_VER := ""
endif
else
# read from version.txt
GET_PROJECT_VER := $(shell cat ${PROJECT_PATH}/version.txt)
endif
endif
# If ``PROJECT_VER`` variable set in project Makefile file, its value will be used.
# Else, if the ``$PROJECT_PATH/version.txt`` exists, its contents will be used as ``PROJECT_VER``.
# Else, if the project is located inside a Git repository, the output of git describe will be used.
# Otherwise, ``PROJECT_VER`` will be empty.
ifeq ("${PROJECT_VER}", "")
PROJECT_VER:= $(GET_PROJECT_VER)
else
PROJECT_VER:= $(PROJECT_VER)
endif
$(info App "$(PROJECT_NAME)" version: $(PROJECT_VER))
NEW_DEFINES:= $(PROJECT_VER) $(PROJECT_NAME) $(IDF_VER)
ifeq ("$(wildcard ${TMP_DEFINES})","")
OLD_DEFINES:=
else
OLD_DEFINES:= $(shell cat $(TMP_DEFINES))
endif
# If NEW_DEFINES (PROJECT_VER, PROJECT_NAME) were changed then rebuild only esp_app_desc.
ifneq ("${NEW_DEFINES}", "${OLD_DEFINES}")
$(shell echo $(NEW_DEFINES) > $(TMP_DEFINES); rm -f esp_app_desc.o;)
endif
esp_app_desc.o: CPPFLAGS += -D PROJECT_VER=\"$(PROJECT_VER)\" -D PROJECT_NAME=\"$(PROJECT_NAME)\"
endif