Demos/Device/ClassDriver/makefile

   1 #
   2 #             LUFA Library
   3 #     Copyright (C) Dean Camera, 2012.
   4 #
   5 #  dean [at] fourwalledcubicle [dot] com
   6 #           www.lufa-lib.org
   7 #
   8
   9 # Makefile to build all the LUFA Device Demos. Call with "make all" to
  10 # rebuild all Device demos.
  11
  12 # Projects are pre-cleaned before each one is built, to ensure any
  13 # custom LUFA library build options are reflected in the compiled
  14 # code.
  15
  16 PROJECT_DIRECTORIES = $(shell ls -d */)
  17
  18 # This makefile is potentially infinitely recursive if something really bad
  19 # happens when determining the set of project directories - hard-abort if
  20 # more than 10 levels deep to avoid angry emails.
  21 ifeq ($(MAKELEVEL), 10)
  22    $(error EMERGENCY ABORT: INFINITE RECURSION DETECTED)
  23 endif
  24
  25 # If building without a per-project object directory, we can't build in parallel
  26 ifeq ($(OBJDIR),)
  27    .NOTPARALLEL:
  28
  29    # Ensure projects are pre-cleaned if the target is the default or "all"
  30    ifeq ($(MAKECMDGOALS),)
  31       MAKECMDGOALS := clean all
  32    endif
  33    ifneq ($(findstring all, $(MAKECMDGOALS)),)
  34       MAKECMDGOALS := clean $(MAKECMDGOALS)
  35    endif
  36 endif
  37
  38 %: $(PROJECT_DIRECTORIES)
  39         @echo . > /dev/null
  40
  41 $(PROJECT_DIRECTORIES):
  42         @$(MAKE) -C $@ $(MAKECMDGOALS)
  43
  44 .PHONY: $(PROJECT_DIRECTORIES)