diff --git a/boards/native/drivers/Makefile b/boards/native/drivers/Makefile
index f0516a8530..6e2c0a70b3 100644
--- a/boards/native/drivers/Makefile
+++ b/boards/native/drivers/Makefile
@@ -11,6 +11,8 @@ DEP = $(SRC:%.c=$(BINDIR)%.d)
 
 INCLUDES += -I$(RIOTBOARD)/native/include/
 
+EXCLUDES := -I$(RIOTBASE)/sys/posix/%
+
 $(BINDIR)native_drivers.a: $(OBJ)
 	@$(AR) rcs $(BINDIR)${ARCH} $(OBJ)
 
@@ -19,7 +21,7 @@ $(BINDIR)native_drivers.a: $(OBJ)
 
 # compile and generate dependency info
 $(BINDIR)%.o: %.c
-	$(CC) $(CFLAGS) $(INCLUDES) $(BOARDINCLUDE) $(PROJECTINCLUDE) $(CPUINCLUDE) -c $*.c -o $(BINDIR)$*.o
+	$(CC) $(CFLAGS) $(filter-out $(EXCLUDES),$(INCLUDES)) $(BOARDINCLUDE) $(PROJECTINCLUDE) $(CPUINCLUDE) -c $*.c -o $(BINDIR)$*.o
 	@$(CC) $(CFLAGS) $(INCLUDES) $(BOARDINCLUDE) $(PROJECTINCLUDE) $(CPUINCLUDE) -MM $*.c > $(BINDIR)$*.d
 	@printf "$(BINDIR)" | cat - $(BINDIR)$*.d > /tmp/riot_out && mv /tmp/riot_out $(BINDIR)$*.d
 
diff --git a/cpu/Makefile.include b/cpu/Makefile.include
index e59606c7ef..5498061a25 100644
--- a/cpu/Makefile.include
+++ b/cpu/Makefile.include
@@ -15,5 +15,5 @@ ifeq ($(CPU),mc1322x)
   export INCLUDES += -I$(RIOTBASE)/cpu/arm_common/include
 endif
 ifeq ($(CPU),native)
-  export INCLUDES += -I$(RIOTBASE)/cpu/native/include
+  export INCLUDES += -I$(RIOTCPU)/native/include
 endif
diff --git a/cpu/native/Makefile b/cpu/native/Makefile
index 20840d66c5..d5d520f74b 100644
--- a/cpu/native/Makefile
+++ b/cpu/native/Makefile
@@ -1,6 +1,9 @@
 MODULE = cpu
 
 INCLUDES += -I../include -I$(RIOTBASE)/core/include
+
+EXCLUDES := -I$(RIOTBASE)/sys/posix/%
+
 DIRS =
 ifneq (,$(findstring rtc,$(USEMODULE)))
 	DIRS += rtc
@@ -14,6 +17,12 @@ all: $(BINDIR)$(MODULE).a
 
 include $(RIOTBASE)/Makefile.base
 
+$(BINDIR)%.o: %.c
+	$(CC) $(CFLAGS) $(filter-out $(EXCLUDES),$(INCLUDES)) $(BOARDINCLUDE) $(PROJECTINCLUDE) $(CPUINCLUDE) -c $*.c -o $(BINDIR)$*.o
+	@$(CC) $(CFLAGS) $(INCLUDES) $(BOARDINCLUDE) $(PROJECTINCLUDE) $(CPUINCLUDE) -MM $*.c > $(BINDIR)$*.d
+	@printf "$(BINDIR)" | cat - $(BINDIR)$*.d > /tmp/riot_out && mv /tmp/riot_out $(BINDIR)$*.d
+
+
 clean::
 	@for i in $(DIRS) ; do "$(MAKE)" -C $$i clean ; done ;
 
diff --git a/cpu/native/include/cpu-conf.h b/cpu/native/include/cpu-conf.h
index 4ddd47a91a..edec5b5770 100644
--- a/cpu/native/include/cpu-conf.h
+++ b/cpu/native/include/cpu-conf.h
@@ -15,7 +15,6 @@
  */
 #ifndef CPUCONF_H_
 #define CPUCONF_H_
-#include <signal.h>
 
 /* TODO: tighten stack sizes */
 #ifdef __MACH__ /* OSX */
diff --git a/cpu/native/include/cpu.h b/cpu/native/include/cpu.h
index 80e91d1e77..160a12eb2a 100644
--- a/cpu/native/include/cpu.h
+++ b/cpu/native/include/cpu.h
@@ -22,50 +22,14 @@
 #ifndef _CPU_H
 #define _CPU_H
 
-#include <sys/param.h>
-
-/* enable signal handler register access on different platforms
- * check here for more:
- * http://sourceforge.net/p/predef/wiki/OperatingSystems/
- */
-#ifdef BSD // BSD = (FreeBSD, Darwin, ...)
-#ifndef _XOPEN_SOURCE
-#define _XOPEN_SOURCE
-#include <ucontext.h>
-#undef _XOPEN_SOURCE
-#else
-#include <ucontext.h>
-#endif
-#elif defined(__linux__)
-#ifndef _GNU_SOURCE
-#define GNU_SOURCE
-#include <ucontext.h>
-#undef GNU_SOURCE
-#else
-#include <ucontext.h>
-#endif
-#endif // BSD/Linux
-
-#include "kernel_internal.h"
-#include "sched.h"
-
 #include "cpu-conf.h"
 
 /* TODO: choose better value? */
 #define F_CPU 1000000
 
+/* TODO: remove once these have been removed from RIOT: */
 void dINT(void);
 void eINT(void);
 
-/**
- * register interrupt handler handler for interrupt sig
- */
-int register_interrupt(int sig, void (*handler)(void));
-
-/**
- * unregister interrupt handler for interrupt sig
- */
-int unregister_interrupt(int sig);
-
 /** @} */
 #endif //_CPU_H
diff --git a/cpu/native/include/native_internal.h b/cpu/native/include/native_internal.h
index e7cf8c84eb..5ddc85f4db 100644
--- a/cpu/native/include/native_internal.h
+++ b/cpu/native/include/native_internal.h
@@ -12,7 +12,7 @@
 #ifndef _NATIVE_INTERNAL_H
 #define _NATIVE_INTERNAL_H
 
-//#include <signal.h>
+#include <signal.h>
 
 /**
  * internal functions
@@ -56,5 +56,44 @@ extern const char *_progname;
 extern fd_set _native_rfds;
 #endif
 
+
+/**
+ * register interrupt handler handler for interrupt sig
+ */
+int register_interrupt(int sig, void (*handler)(void));
+
+/**
+ * unregister interrupt handler for interrupt sig
+ */
+int unregister_interrupt(int sig);
+
+//#include <sys/param.h>
+
+/* enable signal handler register access on different platforms
+ * check here for more:
+ * http://sourceforge.net/p/predef/wiki/OperatingSystems/
+ */
+#ifdef BSD // BSD = (FreeBSD, Darwin, ...)
+#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE
+#include <ucontext.h>
+#undef _XOPEN_SOURCE
+#else
+#include <ucontext.h>
+#endif
+#elif defined(__linux__)
+#ifndef _GNU_SOURCE
+#define GNU_SOURCE
+#include <ucontext.h>
+#undef GNU_SOURCE
+#else
+#include <ucontext.h>
+#endif
+#endif // BSD/Linux
+
+#include "kernel_internal.h"
+#include "sched.h"
+
+
 /** @} */
 #endif /* _NATIVE_INTERNAL_H */
diff --git a/cpu/native/net/Makefile b/cpu/native/net/Makefile
index 81c828ba24..3ce631f49c 100644
--- a/cpu/native/net/Makefile
+++ b/cpu/native/net/Makefile
@@ -1,6 +1,13 @@
 INCLUDES += -I$(RIOTBASE)/core/include -I$(RIOTBASE)/sys/include
 
+EXCLUDES := -I$(RIOTBASE)/sys/posix/%
+
 MODULE = nativenet
 
 include $(MAKEBASE)/Makefile.base
 
+$(BINDIR)%.o: %.c
+	$(CC) $(CFLAGS) $(filter-out $(EXCLUDES),$(INCLUDES)) $(BOARDINCLUDE) $(PROJECTINCLUDE) $(CPUINCLUDE) -c $*.c -o $(BINDIR)$*.o
+	@$(CC) $(CFLAGS) $(INCLUDES) $(BOARDINCLUDE) $(PROJECTINCLUDE) $(CPUINCLUDE) -MM $*.c > $(BINDIR)$*.d
+	@printf "$(BINDIR)" | cat - $(BINDIR)$*.d > /tmp/riot_out && mv /tmp/riot_out $(BINDIR)$*.d
+
diff --git a/cpu/native/net/interface.c b/cpu/native/net/interface.c
index 70e8475bbc..a0fedc8845 100644
--- a/cpu/native/net/interface.c
+++ b/cpu/native/net/interface.c
@@ -27,6 +27,7 @@
 #define ENABLE_DEBUG    (0)
 #include "debug.h"
 #include "transceiver.h"
+#include "msg.h"
 
 #include "tap.h"
 #include "nativenet.h"