46 lines
1.3 KiB
Makefile
46 lines
1.3 KiB
Makefile
#
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# LUFA Library
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# Copyright (C) Dean Camera, 2017.
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#
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# dean [at] fourwalledcubicle [dot] com
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# www.lufa-lib.org
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#
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# Makefile to build all the LUFA USB Bootloaders. Call with "make all" to
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# rebuild all bootloaders.
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# Bootloaders are pre-cleaned before each one is built, to ensure any
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# custom LUFA library build options are reflected in the compiled
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# code.
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PROJECT_DIRECTORIES := $(shell ls -d */)
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# This makefile is potentially infinitely recursive if something really bad
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# happens when determining the set of project directories - hard-abort if
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# more than 10 levels deep to avoid angry emails.
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ifeq ($(MAKELEVEL), 10)
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$(error EMERGENCY ABORT: INFINITE RECURSION DETECTED)
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endif
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# Need to special-case building without a per-project object directory
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ifeq ($(OBJDIR),)
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# If no target specified, force "clean all" and disallow parallel build
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ifeq ($(MAKECMDGOALS),)
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MAKECMDGOALS := clean all
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.NOTPARALLEL:
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endif
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# If one of the targets is to build, force "clean" beforehand and disallow parallel build
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ifneq ($(findstring all, $(MAKECMDGOALS)),)
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MAKECMDGOALS := clean $(MAKECMDGOALS)
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.NOTPARALLEL:
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endif
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endif
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%: $(PROJECT_DIRECTORIES)
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@echo . > /dev/null
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$(PROJECT_DIRECTORIES):
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@$(MAKE) -C $@ $(MAKECMDGOALS)
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.PHONY: $(PROJECT_DIRECTORIES)
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