Makefile

#########################
#### Custom Options: ####
#########################
# GLUON_RELEASE - customize full release name
# BUILD_NUMBER - customize only the build number of the release name
#########################
# GLUON_TARGETS - choose which targets to build (delimited by spaces) e.g. "ath79-generic ramips-mt7621"
# GLUON_DEVICES - choose which devices to build (delimited by spaces) e.g. "avm-fritz-box-4020 tp-link-tl-wdr4300-v1", moves images to devices/ instead of output/, no packages are copied to the devices/ folder
# BROKEN - set to 0 to disable building devices marked as broken
#########################
# GLUON_PRIORITY - set update priority (integer)
# GLUON_AUTOUPDATER_ENABLED - set to 0 to disable the autoupdater
# GLUON_LANGS - set to subset of (en de fr) to include less languages
#########################
# JOBS - set number of threads manually
# GLUON_DEBUG set to 1 to include debug symbols (requires at least 16MB of flash, advice: also set GLUON_DEVICES, run 'make clean' before executing if you care for all packages to be rebuilt with debug symbols)
# GLUON_MINIFY set to 0 to disable minification of scripts (lua etc.)
#########################
# SECRET_KEY_FILE - Path to your ECDSA signing key
# OPKG_KEY_FOLDER - Path to your OpenWrt package signing key
#########################


## Setup Build environment variables
include release.mk
include targets.mk
GLUON_BUILD_DIR := gluon-build

export GLUON_SITEDIR := ..
PATCH_DIR := patches
SECRET_KEY_FILE ?= $(HOME)/.gluon-secret-key
OPKG_KEY_FOLDER ?= $(HOME)/.key-build

## Create version scheme
EXP_FALLBACK = $(shell date '+%Y%m%d')
BUILD_NUMBER ?= $(EXP_FALLBACK)
GIT_TAG := $(shell git describe --tags 2>/dev/null)
ifeq (,$(GIT_TAG))
ifndef GLUON_RELEASE
$(error Set GLUON_RELEASE or create a git tag)
endif
endif
ifneq (,$(shell git describe --exact-match --tags 2>/dev/null))
	GLUON_RELEASE ?= $(GIT_TAG)
else
	GLUON_RELEASE ?= $(GIT_TAG)~exp$(BUILD_NUMBER)
endif
export GLUON_RELEASE


## Setup MAKE
JOBS ?= $(shell cat /proc/cpuinfo | grep -c ^processor)
MAKEFLAGS += -j$(JOBS)
MAKEFLAGS += --no-print-directory
MAKEFLAGS += --output-sync

GLUON_MAKE = $(MAKE) -C $(GLUON_BUILD_DIR)
GLUON_GIT = git -C $(GLUON_BUILD_DIR)


## Build strings for INFO
define newline


endef
ifneq (,$(filter GLUON_TARGETS%,$(MAKEOVERRIDES)))
	TARGETS_INFO := $(newline)\# for target(s) '$(GLUON_TARGETS)'
endif
ifneq (,$(filter GLUON_DEVICES%,$(MAKEOVERRIDES)))
	DEVICE_INFO := $(newline)\# for device(s) '$(GLUON_DEVICES)'
endif


## Info section
define INFO :=

#########################
# FFAC Firmware build
# building release '$(GLUON_RELEASE)'$(TARGETS_INFO)$(DEVICE_INFO)
#########################
# MAKEFLAGS:
# $(MAKEFLAGS)
#########################
# git url: $(GLUON_GIT_URL)
# git ref: $(GLUON_GIT_REF)
#########################
# Found $(shell ls -1 $(PATCH_DIR) 2>/dev/null | wc -l) patches
#########################

endef
# show info section for all make calls except the filtered ones
ifneq (,$(filter-out gluon-clean output-clean clean,$(MAKECMDGOALS)))
$(info $(INFO))
endif


## Prepare folders
$(GLUON_BUILD_DIR):
	mkdir -p $(GLUON_BUILD_DIR)
	@echo

# Note: "|" means "order only", e.g. "do not care about folder timestamps"
# In other words: call requirement when file/folder doesn't exist instead of when it is outdated.
# e.g. after running gluon-clean but not on every run.
# https://www.gnu.org/savannah-checkouts/gnu/make/manual/html_node/Prerequisite-Types.html
$(GLUON_BUILD_DIR)/.git: | $(GLUON_BUILD_DIR)
	@git init $(GLUON_BUILD_DIR) -b master
	@$(GLUON_GIT) remote add origin $(GLUON_GIT_URL)

gluon-update: | $(GLUON_BUILD_DIR)/.git
	@$(GLUON_GIT) remote set-url origin $(GLUON_GIT_URL)
	@$(GLUON_GIT) fetch --tags origin $(GLUON_GIT_REF)
	@$(GLUON_GIT) checkout master >/dev/null 2>&1 || exit 0
	@$(GLUON_GIT) reset --hard FETCH_HEAD
	@$(GLUON_GIT) clean -fd
	@echo


## Build rules
all: manifest

sign: manifest | $(SECRET_KEY_FILE)
ifdef DEVICE_INFO
	@echo
	@echo "make sign hasn't been designed to work while GLUON_DEVICES is set."
	@exit 1
endif
	@for branch in experimental beta stable; do \
		echo ''; \
		echo ''Signing $$branch.manifest''; \
		$(GLUON_BUILD_DIR)/contrib/sign.sh $(SECRET_KEY_FILE) output/images/sysupgrade/$$branch.manifest; \
	done

# Note: $(GLUON_MAKE) is a recursive variable so it doesn't count as a $(MAKE).
# "+" tells MAKE that there is another $(MAKE) in the following shell script.
# This allows communication of MAKEFLAGS like -j to submake.
# https://stackoverflow.com/a/60706372/2721478
manifest: build
	+@for branch in experimental beta stable; do \
		echo ''; \
		echo ''Creating $$branch manifest''; \
		$(GLUON_MAKE) manifest GLUON_AUTOUPDATER_BRANCH=$$branch; \
	done

build: gluon-prepare output-clean
	+@for target in $(GLUON_TARGETS); do \
		echo ''; \
		echo ''Building target $$target''; \
		$(GLUON_MAKE) download all GLUON_TARGET=$$target CONFIG_JSON_ADD_IMAGE_INFO=1; \
	done
	@if [ ! -f "$(OPKG_KEY_FOLDER)/key-build" ] && [ -f "$(GLUON_BUILD_DIR)/openwrt/key-build" ]; then \
		echo 'Copying new opkg keys to $(OPKG_KEY_FOLDER)'; \
		mkdir -p $(OPKG_KEY_FOLDER); \
		cp $(GLUON_BUILD_DIR)/openwrt/key-build* $(OPKG_KEY_FOLDER)/; \
	fi
ifndef GLUON_DEVICES
	cat $(GLUON_BUILD_DIR)/openwrt/bin/targets/*/*/profiles.json | jq -s > output/devices.json
	$(eval PACKAGES_BRANCH := $(subst OPENWRT_BRANCH=openwrt,packages,$(shell cat $(GLUON_BUILD_DIR)/modules | grep OPENWRT_BRANCH)))
	mkdir -p output/packages/$(PACKAGES_BRANCH)
	rsync -a --exclude '*/base' --exclude '*/luci' --exclude '*/packages' --exclude '*/routing' --exclude '*/telephony' $(GLUON_BUILD_DIR)/openwrt/bin/packages/ output/packages/$(PACKAGES_BRANCH)/
endif

gluon-prepare: gluon-update ffac-patch | .modules

PATCH_FILES = $(shell find $(PATCH_DIR)/ -type f -name '*.patch')
ffac-patch: gluon-update
	@echo 'Applying patches…'
	@if [ `$(GLUON_GIT) branch --list patched` ]; then \
		$(GLUON_GIT) branch -D patched; \
	fi
	@$(GLUON_GIT) checkout -B patching
	@if [ -d "$(PATCH_DIR)" -a "$(PATCH_DIR)/*.patch" ]; then \
		(git apply --directory=$(GLUON_BUILD_DIR) --ignore-space-change --ignore-whitespace --whitespace=nowarn --verbose $(PATCH_FILES)) || ( \
			$(GLUON_GIT) clean -fd; \
			$(GLUON_GIT) checkout -B patched; \
			$(GLUON_GIT) branch -D patching; \
			exit 1 \
		) \
	fi
	@$(GLUON_GIT) branch -M patched

.cmp-git-head: FORCE | ffac-patch
	@$(GLUON_GIT) rev-parse @{0} | cmp -s '$@' || $(GLUON_GIT) rev-parse @{0} > '$@'

.modules: release.mk modules .cmp-git-head $(PATCH_DIR) $(PATCH_FILES) | ffac-patch
	@echo
	@echo Updating Gluon modules…
	@rm -f .modules
	+$(GLUON_MAKE) update
	@if [ -f "$(OPKG_KEY_FOLDER)/key-build" ] && [ ! -f "$(GLUON_BUILD_DIR)/openwrt/key-build" ]; then \
		echo 'Installing your opkg keys'; \
		cp $(OPKG_KEY_FOLDER)/key-build* $(GLUON_BUILD_DIR)/openwrt/; \
	fi
	@touch .modules


## Patch system
patch-prepare: gluon-update
	@echo 'Updating Gluon modules…'
	@rm -f .modules
	+@$(GLUON_MAKE) update >/dev/null 2>&1

patch:
	@echo
	@echo 'Creating a new patch from all changes found in $(GLUON_BUILD_DIR)'
	@echo "Note: This will only create a correct patch, if you ran 'make patch-prepare' or 'make edit-patch' before you applied those changes."
	@echo
	@echo 'What should your new .patch file be called?'
	+@$(GLUON_MAKE) update-patches >/dev/null 2>&1
	@if [ `$(GLUON_GIT) status -s patches | head -c1 | grep -E '.'` ]; then \
		echo 'Found changes in Gluon modules and created new .patch files for them.'; \
	fi
	@$(GLUON_GIT) add --all
	@read file; \
	echo ''Creating $$file.patch containing these changes:''; \
	$(GLUON_GIT) status -s; \
	$(GLUON_GIT) diff --staged > $(PATCH_DIR)/$$file.patch; \
	$(GLUON_GIT) commit --no-edit -m "$$file.patch" -q

edit-patch: patch-prepare
	@echo
	@echo 'Available patches:'
	@ls -1 $(PATCH_DIR) | grep -E '\.patch$'' | sed -e 's/\.patch$///'
	@echo
	@echo Which one do you want to edit?
	+@read file; \
	if [ ! -f "patches/$$file.patch" ]; then \
		echo ''Couldn\'t find file: $$file.patch''; \
		exit 1; \
	else \
		git apply --directory=$(GLUON_BUILD_DIR) --ignore-space-change --ignore-whitespace --whitespace=nowarn --verbose $(PATCH_DIR)/$$file.patch; \
		if [ `$(GLUON_GIT) status -s patches | head -c1 | grep -E '.'` ]; then \
			echo 'Patch contained patches for Gluon modules. Applying said patches…'; \
			$(GLUON_MAKE) refresh-patches >/dev/null; \
		fi; \
		echo "You may edit $(GLUON_BUILD_DIR) now. Run 'make patch' once you are finished."; \
	fi

update-patches: patch-prepare
	@echo
	@echo 'Updating our patches…'
	@if [ `$(GLUON_GIT) branch --list refresh` ]; then \
		$(GLUON_GIT) branch -D refresh; \
	fi
	@$(GLUON_GIT) checkout -B refreshing
	@$(GLUON_GIT) commit --allow-empty -m "Patches" -q
	+@for file in $(PATCH_FILES); do \
		echo ''; \
		(git apply --directory=$(GLUON_BUILD_DIR) --ignore-space-change --ignore-whitespace --whitespace=nowarn --verbose $$file) && true;\
		EXIT_CODE=$$?; \
		if [ $$EXIT_CODE -ne 0 ]; then \
			echo ''Error applying patch $$file''; \
			$(GLUON_GIT) clean -fdq; \
			$(GLUON_GIT) checkout -B refresh; \
			$(GLUON_GIT) branch -D refreshing; \
			break; \
		else \
			if [ `$(GLUON_GIT) status -s patches | head -c1 | grep -E '.'` ]; then \
				for file_rename in `$(GLUON_GIT) status -s -u patches | cut -c4-`; do \
					mv ''$(GLUON_BUILD_DIR)/$$file_rename'' ''$(GLUON_BUILD_DIR)/$$(dirname "$$file_rename")/x$$(basename "$$file_rename")''; \
				done; \
				echo 'Refreshing Gluon patches…'; \
				$(GLUON_MAKE) refresh-patches >/dev/null; \
			fi; \
			echo ''Refreshing $$file''; \
			$(GLUON_GIT) add --all; \
			$(GLUON_GIT) diff --staged > $$file; \
			$(GLUON_GIT) commit --amend --no-edit -q; \
		fi; \
	done; exit $$EXIT_CODE
	@$(GLUON_GIT) branch -M refresh


## Cleanup rules
devices-clean:
	mkdir -p devices/
	rm -rf devices/*

gluon-clean:
	rm -f .modules
	rm -rf $(GLUON_BUILD_DIR)
	@echo

output-clean:
ifdef GLUON_DEVICES
	mkdir -p devices/
else
	mkdir -p output/
	rm -rf output/*
endif
	@echo

clean: gluon-clean output-clean devices-clean

Makefile: ;

FORCE: ;

.SUFFIXES: ;

.PHONY: all gluon-update sign manifest build gluon-prepare ffac-patch patch-prepare patch edit-patches update-patches gluon-clean output-clean