#
# LUFA Library
-# Copyright (C) Dean Camera, 2011.
+# Copyright (C) Dean Camera, 2013.
#
# dean [at] fourwalledcubicle [dot] com
# www.lufa-lib.org
# custom LUFA library build options are reflected in the compiled
# code.
-all:
- $(MAKE) -C GenericHIDHost clean
- $(MAKE) -C GenericHIDHost all
-
- $(MAKE) -C JoystickHostWithParser clean
- $(MAKE) -C JoystickHostWithParser all
-
- $(MAKE) -C KeyboardHost clean
- $(MAKE) -C KeyboardHost all
-
- $(MAKE) -C MassStorageHost clean
- $(MAKE) -C MassStorageHost all
-
- $(MAKE) -C MIDIHost clean
- $(MAKE) -C MIDIHost all
-
- $(MAKE) -C MouseHost clean
- $(MAKE) -C MouseHost all
-
- $(MAKE) -C MouseHostWithParser clean
- $(MAKE) -C MouseHostWithParser all
-
- $(MAKE) -C PrinterHost clean
- $(MAKE) -C PrinterHost all
-
- $(MAKE) -C RNDISEthernetHost clean
- $(MAKE) -C RNDISEthernetHost all
-
- $(MAKE) -C StillImageHost clean
- $(MAKE) -C StillImageHost all
-
- $(MAKE) -C VirtualSerialHost clean
- $(MAKE) -C VirtualSerialHost all
-
-%:
- $(MAKE) -C GenericHIDHost $@
- $(MAKE) -C JoystickHostWithParser $@
- $(MAKE) -C KeyboardHost $@
- $(MAKE) -C KeyboardHostWithParser $@
- $(MAKE) -C MassStorageHost $@
- $(MAKE) -C MIDIHost $@
- $(MAKE) -C MouseHost $@
- $(MAKE) -C MouseHostWithParser $@
- $(MAKE) -C PrinterHost $@
- $(MAKE) -C RNDISEthernetHost $@
- $(MAKE) -C StillImageHost $@
- $(MAKE) -C VirtualSerialHost $@
-
+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)