make: Add DEFAULT_MODULE and DISABLE_MODULE

Closes #926

Makefile.defaultmodules

+DEFAULT_MODULE += cpu core sys
+
+DEFAULT_MODULE += auto_init

Makefile.include

@@ -48,6 +48,11 @@ include $(RIOTBOARD)/$(BOARD)/Makefile.include
 include $(RIOTCPU)/$(CPU)/Makefile.include
 include $(RIOTBASE)/Makefile.dep
 
+# Test if there where dependencies against a module in DISABLE_MODULE.
+ifneq (, $(filter $(DISABLE_MODULE), $(USEMODULE)))
+$(error "Required modules were disabled using DISABLE_MODULE: $(sort $(filter $(DISABLE_MODULE), $(USEMODULE)))")
+endif
+
 # Test if the input language was specified externally.
 # Otherwise test if the compiler unterstands the "-std=gnu99" flag, and use it if so.
 # Otherwise test if the compiler unterstands the "-std=c99" flag, and use it if so.

Makefile.modules

 UNDEF += $(BINDIR)startup.o
 
 include $(RIOTBASE)/Makefile.pseudomodules
+include $(RIOTBASE)/Makefile.defaultmodules
+
+USEMODULE += $(filter-out $(DISABLE_MODULE), $(DEFAULT_MODULE))
 
-USEMODULE += cpu core sys
 INCLUDES += -I$(RIOTBASE)/core/include -I$(RIOTBASE)/drivers/include -I$(RIOTBASE)/sys/include
 ED = $(USEMODULE:%=-DMODULE_%)
 ED += $(USEPKG:%=-DMODULE_%)

examples/ccn-lite-client/Makefile

@@ -34,7 +34,6 @@ USEMODULE += shell
 USEMODULE += shell_commands
 USEMODULE += posix
 USEMODULE += ps
-USEMODULE += auto_init
 USEMODULE += random
 USEMODULE += transceiver
 ifeq ($(BOARD),msba2)

examples/ccn-lite-relay/Makefile

@@ -31,9 +31,6 @@ export QUIET ?= 1
 
 USEMODULE += config
 USEMODULE += posix
-USEMODULE += auto_init
-
-USEMODULE += auto_init
 
 USEMODULE += transceiver
 ifeq ($(BOARD),msba2)

examples/default/Makefile

@@ -34,7 +34,6 @@ USEMODULE += shell
 USEMODULE += shell_commands
 USEMODULE += ps
 USEMODULE += vtimer
-USEMODULE += auto_init
 USEMODULE += defaulttransceiver
 
 ifneq (,$(filter msb-430,$(BOARD)))

examples/rpl_udp/Makefile

@@ -32,7 +32,6 @@ CFLAGS += "-Wno-cpp"
 
 # Modules to include:
 
-USEMODULE += auto_init
 USEMODULE += shell
 USEMODULE += shell_commands
 USEMODULE += posix

tests/test_irq/Makefile

@@ -5,7 +5,6 @@ ifeq (,$(filter native,$(BOARD)))
 	include $(RIOTBASE)/Makefile.unsupported
 else
 
-USEMODULE += auto_init
 USEMODULE += posix
 
 include $(RIOTBASE)/Makefile.include

tests/test_nativenet/Makefile

@@ -5,7 +5,6 @@ ifeq (,$(filter native,$(BOARD)))
 include $(RIOTBASE)/Makefile.unsupported
 else
 
-USEMODULE += auto_init
 USEMODULE += nativenet
 USEMODULE += transceiver
 

tests/test_net_if/Makefile

@@ -8,7 +8,6 @@ ifeq ($(BOARD),stm32f4discovery)
 	include Makefile.$(BOARD)
 endif
 
-USEMODULE += auto_init
 USEMODULE += net_if
 USEMODULE += defaulttransceiver
 

tests/test_pnet/Makefile

 export PROJECT = test_pnet
 include ../Makefile.tests_common
 
-USEMODULE += auto_init
 USEMODULE += posix
 USEMODULE += pnet
 USEMODULE += vtimer

tests/test_vtimer_msg/Makefile

 export PROJECT = test_vtimer_msg
 include ../Makefile.tests_common
 
-USEMODULE += auto_init
 USEMODULE += vtimer
 
 include $(RIOTBASE)/Makefile.include