X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/7f9f97c792dee6875fbca9806422bdd7d6c5a657..aaef4fa84c954027e1f4488bfeb38787331d41ed:/Demos/DualRole/ClassDriver/makefile

diff --git a/Demos/DualRole/ClassDriver/makefile b/Demos/DualRole/ClassDriver/makefile
index 3f36b4202..763f85090 100644
--- a/Demos/DualRole/ClassDriver/makefile
+++ b/Demos/DualRole/ClassDriver/makefile
@@ -1,9 +1,9 @@
 #
 #             LUFA Library
-#     Copyright (C) Dean Camera, 2010.
-#              
+#     Copyright (C) Dean Camera, 2014.
+#
 #  dean [at] fourwalledcubicle [dot] com
-#      www.fourwalledcubicle.com
+#           www.lufa-lib.org
 #
 
 # Makefile to build all the LUFA Dual Role Demos. Call with "make all" to
@@ -13,9 +13,34 @@
 # custom LUFA library build options are reflected in the compiled
 # code.
 
-all:
-	make -C MouseHostDevice clean
-	make -C MouseHostDevice all
+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)
 
-%:
-	make -C MouseHostDevice $@
+.PHONY: $(PROJECT_DIRECTORIES)