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mkfile_path := $(abspath $(lastword $(MAKEFILE_LIST)))
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mkfile_dir := $(dir $(mkfile_path))
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# Make a variable lazily evaluated at first call
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# From https://blog.jgc.org/2016/07/lazy-gnu-make-variables.html
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make-lazy = $(eval $1 = $$(eval $1 := $(value $(1)))$$($1))
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system_arduino_cli=$(shell command -v arduino-cli || true)
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ifeq ($(system_arduino_cli),)
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export ARDUINO_CLI ?= $(KALEIDOSCOPE_BIN_DIR)/arduino-cli
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else
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export ARDUINO_CLI ?= $(system_arduino_cli)
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endif
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# This is horrible. But because make doesn't really support
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# multi-line variables and we want to cache the full
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# _arduino_props in a variable, which means letting make
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# split the properties on space, which is what it converts
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# newlines into. To make this go, we we need to replace interior
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# spaces in the variables with something. We chose the fire
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# emoji, since it accurately represents our feelings on this
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# state of affairs. Later, when finding props, we need to reverse
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# this process, turning fire into space.
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ifneq ($(FQBN),)
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fqbn_arg = --fqbn $(FQBN)
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endif
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# if we don't have a sketch, make a pretend one so we can run --show properties
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# This is because aruduino-cli doesn't currently allow us to get props with
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# just an FQBN. We've filed a bug with them
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ifeq ($(SKETCH_FILE_PATH),)
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_arudino_props_sketch_arg = $(KALEIDOSCOPE_ETC_DIR)/dummy-sketch/
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else
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_arudino_props_sketch_arg = $(SKETCH_FILE_PATH)
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endif
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_arduino_props = $(shell ${ARDUINO_CLI} compile $(fqbn_arg) --show-properties "$(_arduino_props_sketch_arg)"|perl -p -e"s/ /🔥/g")
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$(call make-lazy,_arduino_props)
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_arduino_prop = $(subst $1=,,$(subst 🔥, ,$(filter $1=%,$(_arduino_props))))
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# How to use_arduino_prop
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# $(call _arduino_prop,recipe.hooks.sketch.prebuild.2.pattern)
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