# Makefile - build a set of subdirectories

#
# Copyright (c) 2011-2014 Wind River Systems, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1) Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2) Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3) Neither the name of Wind River Systems nor the names of its contributors
# may be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

# by using this fragment, users can set:
#
#   DIRS: list of directories to build
#
# if not set, DIRS defaults to the list of all subdirectories
# that contain a file called [mM]akefile
#

.DEFAULT_GOAL = all

DIRS ?= $(subst /,,$(sort $(dir $(wildcard */[mM]akefile))))

ALL_CLEAN  = $(foreach dir,${DIRS} ${DEPS},${dir}_clean)
ALL_VCLEAN = $(foreach dir,${DIRS} ${DEPS},${dir}_veryclean)

.PHONY: all clean veryclean pristine ${DIRS} ${DEPS} ${ALL_CLEAN} ${ALL_VCLEAN}

${DEPS}:
	@${MAKE} -C $@

${DIRS}: ${DEPS}
	@${MAKE} -C $@

${ALL_CLEAN}:
	@${MAKE} -C $(subst _clean,,$@) clean

${ALL_VCLEAN}:
	@${MAKE} -C $(subst _veryclean,,$@) veryclean

all:       ${DIRS}
clean:     ${ALL_CLEAN}
veryclean: ${ALL_VCLEAN}
pristine:  veryclean