make Makefiles proof for spaces in $PATH

Makefile.include

@@ -45,9 +45,9 @@ endif
 ## make script for your project. Build RIOT-base here!
 all: $(PROJBINDIR)/$(PROJECT).a
 	@echo "Building project $(PROJECT) for $(BOARD) w/ MCU $(MCU)."
-	$(MAKE) -C $(RIOTBOARD)
-	$(MAKE) -C $(RIOTBASE)
-	@for i in $(EXTERNAL_MODULES) ; do $(MAKE) -C $$i ; done ;
+	"$(MAKE)" -C $(RIOTBOARD)
+	"$(MAKE)" -C $(RIOTBASE)
+	@for i in $(EXTERNAL_MODULES) ; do "$(MAKE)" -C $$i ; done ;
 ifeq ($(BUILDOSXNATIVE),1)	
 	@$(LINK) $(UNDEF) -o $(PROJBINDIR)/$(PROJECT).elf $(BASELIBS) $(LINKFLAGS) -Wl,-no_pie
 else
@@ -79,9 +79,9 @@ $(PROJBINDIR)/%.o: %.c $(PROJDEPS)
 	$(CC) $(CFLAGS) $(INCLUDES) -c $*.c -o $(PROJBINDIR)/$*.o
 
 clean:
-	$(MAKE) -C $(RIOTBOARD) clean
-	$(MAKE) -C $(RIOTBASE) clean
-	@for i in $(EXTERNAL_MODULES) ; do $(MAKE) -C $$i clean ; done ;
+	"$(MAKE)" -C $(RIOTBOARD) clean
+	"$(MAKE)" -C $(RIOTBASE) clean
+	@for i in $(EXTERNAL_MODULES) ; do "$(MAKE)" -C $$i clean ; done ;
 	rm -rf $(PROJBINDIR)
 
 flash: all

cpu/Makefile

@@ -24,15 +24,14 @@ endif
 cpus: $(DIRS)
 
 $(DIRS): 
-	@$(MAKE) -C $@
+	@"$(MAKE)" -C $@
 
 clean:
-	@$(MAKE) -C lpc2387 clean
-	@$(MAKE) -C mc1322x clean
-	@$(MAKE) -C lpc_common clean
-	@$(MAKE) -C arm_common clean
-	@$(MAKE) -C cc430 clean
-	@$(MAKE) -C msp430-common clean
-	@$(MAKE) -C msp430x16x clean
-	@$(MAKE) -C native clean
-
+	@"$(MAKE)" -C lpc2387 clean
+	@"$(MAKE)" -C mc1322x clean
+	@"$(MAKE)" -C lpc_common clean
+	@"$(MAKE)" -C arm_common clean
+	@"$(MAKE)" -C cc430 clean
+	@"$(MAKE)" -C msp430-common clean
+	@"$(MAKE)" -C msp430x16x clean
+	@"$(MAKE)" -C native clean

cpu/cc430/Makefile

@@ -5,10 +5,10 @@ INCLUDES += -I$(RIOTBASE)/drivers/cc110x_ng/include
 DIRS =
 
 all: $(BINDIR)$(MODULE).a
-	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
 
 include $(RIOTBASE)/Makefile.base
 
 clean::
-	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;
 

cpu/mc1322x/Makefile

@@ -9,10 +9,10 @@ ifneq (,$(findstring mc1322x_asm,$(USEMODULE)))
 endif
 
 all: $(BINDIR)$(MODULE).a
-	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
 
 include $(RIOTBASE)/Makefile.base
 
 clean::
-	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;
 

cpu/msp430-common/Makefile

@@ -4,10 +4,10 @@ INCLUDES += -Iinclude -I$(RIOTBASE)/core/include/ -I$(RIOTBOARD)/$(BOARD)/includ
 DIRS =
 
 all: $(BINDIR)$(MODULE).a
-	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
 
 include $(RIOTBASE)/Makefile.base
 
 clean::
-	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;
 

cpu/msp430x16x/Makefile

@@ -4,10 +4,10 @@ INCLUDES = -I../include -I$(RIOTBASE)/core/include
 DIRS =
 
 all: $(BINDIR)$(MODULE).a
-	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
 
 include $(RIOTBASE)/Makefile.base
 
 clean::
-	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;
 

cpu/native/Makefile

@@ -10,10 +10,10 @@ ifneq (,$(findstring nativenet,$(USEMODULE)))
 endif
 
 all: $(BINDIR)$(MODULE).a
-	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
 
 include $(RIOTBASE)/Makefile.base
 
 clean::
-	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;
 

drivers/Makefile

@@ -48,4 +48,3 @@ clean::
 
 
 
-

drivers/at86rf231/Makefile

@@ -4,10 +4,10 @@ MODULE =at86rf231
 DIRS =
 
 all: $(BINDIR)$(MODULE).a
-	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
 
 include $(RIOTBASE)/Makefile.base
 
 clean::
-	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;
 

drivers/cc110x_ng/Makefile

@@ -16,10 +16,10 @@ ifneq (,$(findstring native,$(BOARD)))
 endif
 
 all: $(BINDIR)$(MODULE).a
-	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
 
 include $(RIOTBASE)/Makefile.base
 
 clean::
-	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;
 

drivers/cc2420/Makefile

@@ -4,10 +4,10 @@ MODULE =cc2420
 DIRS =
 
 all: $(BINDIR)$(MODULE).a
-	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
 
 include $(RIOTBASE)/Makefile.base
 
 clean::
-	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;
 

sys/Makefile

@@ -87,11 +87,11 @@ ifneq (,$(findstring hashes,$(USEMODULE)))
 endif
 
 all: $(BINDIR)$(MODULE).a 
-	@for i in $(DIRS) ; do $(MAKE) -C $$i ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
 
 include $(RIOTBASE)/Makefile.base
 
 # remove compilation products
 clean::
-	@for i in $(DIRS) ; do $(MAKE) -C $$i clean ; done ;
+	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;