Makefile

# Copyright (C) 2024 Toitware ApS.
# Use of this source code is governed by a Zero-Clause BSD license that can
# be found in the LICENSE file.

SOURCE_DIR := $(dir $(realpath $(lastword $(MAKEFILE_LIST))))
SHELL := bash
.SHELLFLAGS += -e

# Change to your configuration. See toit/toolchains for the available targets.
# Then run 'make init'.
IDF_TARGET := esp32

# Set to false to avoid initializing submodules at every build.
INITIALIZE_SUBMODULES := true
# A semicolon-separated list of directories that contain components
#   and external libraries.
COMPONENTS := $(SOURCE_DIR)/components

# Constants that typically don't need to be changed.
BUILD_ROOT := $(SOURCE_DIR)/build-root
BUILD_PATH := $(SOURCE_DIR)/build
TOIT_ROOT := $(SOURCE_DIR)/toit
IDF_PATH := $(TOIT_ROOT)/third_party/esp-idf
IDF_PY := $(IDF_PATH)/tools/idf.py

all: esp32

define toit-make
	@$(MAKE) -C "$(BUILD_ROOT)" \
		COMPONENTS=$(COMPONENTS) \
		BUILD_PATH=$(BUILD_PATH) \
		TOIT_ROOT=$(TOIT_ROOT) \
		IDF_TARGET=$(IDF_TARGET) \
		IDF_PATH=$(IDF_PATH) \
		IDF_PY=$(IDF_PY) \
		$(1)
endef

.PHONY: initialize-submodules
initialize-submodules:
	@if [[ "$(INITIALIZE_SUBMODULES)" == "true" ]]; then \
	  echo "Initializing submodules"; \
		pushd toit && git submodule update --init --recursive && popd; \
	fi

.PHONY: host
host: initialize-submodules
	@$(call toit-make,build-host)

.PHONY: build-host
build-host: host

.PHONY: esp32
esp32: initialize-submodules
	@if [[ ! -f $(BUILD_ROOT)/sdkconfig.defaults ]]; then \
	  echo "Run 'make init' first"; \
		exit 1; \
	fi
	@$(call toit-make,esp32)

.PHONY: menuconfig
menuconfig: initialize-submodules
	@$(call toit-make,menuconfig)

.PHONY: clean
clean:
	@$(call toit-make,clean)

.PHONY: init
init: $(BUILD_ROOT)/sdkconfig.defaults $(BUILD_ROOT)/partitions.csv

$(BUILD_ROOT)/sdkconfig.defaults: initialize-submodules
	@cp $(TOIT_ROOT)/toolchains/$(IDF_TARGET)/sdkconfig.defaults $@

$(BUILD_ROOT)/partitions.csv: initialize-submodules
	@cp $(TOIT_ROOT)/toolchains/$(IDF_TARGET)/partitions.csv $@

.PHONY: diff
diff:
	@diff -U0 --color $(TOIT_ROOT)/toolchains/$(IDF_TARGET)/sdkconfig.defaults $(BUILD_ROOT)/sdkconfig.defaults || true
	@diff -U0 --color $(TOIT_ROOT)/toolchains/$(IDF_TARGET)/partitions.csv $(BUILD_ROOT)/partitions.csv || true