make: make DIRS usable for applications

Makefile.base

@@ -2,6 +2,8 @@ ifeq (, $(__RIOTBUILD_FLAG))
     $(error You cannot build a module on its own. Use "make" in your application's directory instead.)
 endif
 
+unexport DIRS
+
 MODULE ?= $(shell basename $(CURDIR))
 
 .PHONY: all ${DIRS:%=ALL--%} ${DIRS:%=CLEAN--%}

Makefile.include

@@ -87,7 +87,7 @@ export HEXFILE ?= $(ELFFILE:.elf=.hex)
 
 ## make script for your application. Build RIOT-base here!
 all: ..build-message $(USEPKG:%=${BINDIR}%.a) $(APPDEPS)
-	"$(MAKE)" -C $(CURDIR) -f $(RIOTBASE)/Makefile.application
+	$(AD)DIRS="$(DIRS)" "$(MAKE)" -C $(CURDIR) -f $(RIOTBASE)/Makefile.application
 ifeq (,$(RIOTNOLINK))
 ifeq ($(BUILDOSXNATIVE),1)
 	$(AD)$(LINK) $(UNDEF) -o $(ELFFILE) $(BASELIBS) $(LINKFLAGS) -Wl,-no_pie

Makefile.modules

@@ -8,7 +8,7 @@ ED = $(USEMODULE:%=-DMODULE_%)
 ED += $(USEPKG:%=-DMODULE_%)
 EXTDEFINES = $(shell echo $(sort $(ED))|tr 'a-z' 'A-Z')
 REALMODULES = $(filter-out $(PSEUDOMODULES), $(sort $(USEMODULE)))
-export BASELIBS = $(REALMODULES:%=$(BINDIR)%.a)
+export BASELIBS += $(REALMODULES:%=$(BINDIR)%.a)
 
 CFLAGS += $(EXTDEFINES)
 

tests/unittests/Makefile

@@ -25,27 +25,18 @@ endif
 # Pull in `Makefile.include`s from the test suites:
 -include $(UNIT_TESTS:%=$(RIOTBASE)/tests/unittests/%/Makefile.include)
 
+DIRS += $(UNIT_TESTS)
+BASELIBS += $(UNIT_TESTS:%=$(BINDIR)%.a)
+
 include $(RIOTBASE)/Makefile.include
 
-UNITTEST_LIBS := $(UNIT_TESTS:%=$(BINDIR)%.a)
-
-all: $(UNITTEST_LIBS)
 $(UNIT_TESTS): all
 
-.FORCE:
-
-$(UNITTEST_LIBS): $(BINDIR)%.a: .FORCE
-	"$(MAKE)" -C $(CURDIR)/$*
-
-charEMPTY :=
-charSPACE := $(charEMPTY) $(charEMPTY)
 charCOMMA := ,
 
 ifeq (, $(UNIT_TESTS))
     CFLAGS += -DNO_TEST_SUITES
     $(warning There was no test suite specified!)
 else
-    CFLAGS += -DTEST_SUITES='$(subst $(charSPACE),$(charCOMMA),$(UNIT_TESTS:tests-%=%))'
+    CFLAGS += -DTEST_SUITES='$(subst $() $(),$(charCOMMA),$(UNIT_TESTS:tests-%=%))'
 endif
-
-BASELIBS += $(UNITTEST_LIBS)