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#
# LUFA Library
# Copyright (C) Dean Camera, 2012.
#
# dean [at] fourwalledcubicle [dot] com
# www.lufa-lib.org
#
# Makefile to build all the LUFA USB Bootloaders. Call with "make all" to
# rebuild all bootloaders.
# Bootloaders are pre-cleaned before each one is built, to ensure any
# custom LUFA library build options are reflected in the compiled
# code.
PROJECT_DIRECTORIES := $(shell ls -d */)
# This makefile is potentially infinitely recursive if something really bad
# happens when determining the set of project directories - hard-abort if
# more than 10 levels deep to avoid angry emails.
ifeq ($(MAKELEVEL), 10)
$(error EMERGENCY ABORT: INFINITE RECURSION DETECTED)
endif
# Need to special-case building without a per-project object directory
ifeq ($(OBJDIR),)
# If no target specified, force "clean all" and disallow parallel build
ifeq ($(MAKECMDGOALS),)
MAKECMDGOALS := clean all
.NOTPARALLEL:
endif
# If one of the targets is to build, force "clean" beforehand and disallow parallel build
ifneq ($(findstring all, $(MAKECMDGOALS)),)
MAKECMDGOALS := clean $(MAKECMDGOALS)
.NOTPARALLEL:
endif
endif
%: $(PROJECT_DIRECTORIES)
@echo . > /dev/null
$(PROJECT_DIRECTORIES):
@$(MAKE) -C $@ $(MAKECMDGOALS)
.PHONY: $(PROJECT_DIRECTORIES)