diff --git a/config/make/rules.mk b/config/make/rules.mk
index 77091f0..d0d3dc7 100755
--- a/config/make/rules.mk
+++ b/config/make/rules.mk
@@ -11,7 +11,9 @@ endif
 
 INCLUDES += $(SRC_DIR)/os/$(DBG_REL_DIR)/include
 LIB_DIR += $(SRC_DIR)/os/$(DBG_REL_DIR)
-LIBS += kosmos-arm-stm32f4-discovery-dbg
+
+OS_LIB = kosmos-$(ARCH)-$(BOARD)$(DBG_EXT)
+LIBS += $(OS_LIB)
 
 CFLAGS += \
 	-O$(OPTIM) \
@@ -28,11 +30,9 @@ CPPCHECK_FLAGS += \
 include $(ROOT_DIR)/config/make/tools.mk
 
 SRC_DIR = $(ROOT_DIR)/source
-
+DBG_REL_DIR = release
 ifeq ($(DEBUG),y)
 DBG_REL_DIR = debug
-else
-DBG_REL_DIR = release
 endif
 
 OBJ_DIR = $(ROOT_DIR)/release/object/$(ARCH)/$(DBG_REL_DIR)
@@ -48,6 +48,7 @@ DOC_SRC :=
 ELF_EXT = .elf
 BIN_EXT = .bin
 HEX_EXT = .hex
+LIB_EXT = .a
 SIZE_EXT = .size
 TEST_EXT =
 
diff --git a/config/make/stm32f4xx.mk b/config/make/stm32f4xx.mk
index ad30c83..39113d7 100644
--- a/config/make/stm32f4xx.mk
+++ b/config/make/stm32f4xx.mk
@@ -1,4 +1,5 @@
-ARCH ?= stm32f4xx
+ARCH ?= arm
+CPU ?= stm32f4xx
 ifeq ($(ARCH),stm32f4xx)
 CFLAGS += -DARCH_STM32F4XX
 endif
@@ -14,9 +15,11 @@ INCLUDES += \
 ifeq ($(DEBUG),y)
 OPTIM = 0
 CFLAGS += -g
+DBG_EXT = -dbg
 else
 OPTIM = s
 LDFLAGS += -s
+DBG_EXT =
 endif
 
 CFLAGS += \