/
makefile
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/
makefile
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# file : makefile
#
# Copyright (C) 2018 Joshua Barretto <joshua.s.barretto@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Non-configurable
SRC_ROOT = $(abspath .)
BUILD_ROOT ?= $(SRC_ROOT)/build
ifndef TARGET
$(error No target defined, pass TARGET=<name>)
endif
# Configurable
INITRD_TAR ?= $(BUILD_ROOT)/initrd.tar
TAR = tar
# Non-configurable
BUILD_DIRS = $(BUILD_ROOT)
# Rules
.PHONY: all
all: tar
.PHONY: clean
clean:
@rm -r -f $(INITRD_TAR)
$(BUILD_DIRS):
@echo "Creating build directories..."
@mkdir -p $@
.PHONY: tar
tar: $(BUILD_DIRS)
@echo "Generating initrd..."
@cp -r $(SRC_ROOT)/root/* $(BUILD_ROOT)/root/.
@cd $(BUILD_ROOT) && $(TAR) cf $(INITRD_TAR) --format=ustar *