Merge pull request #2606 from hathach/build-clang

Add  Clang support

9 files changed, 75 insertions, 9 deletions

diff --git a/examples/build_system/make/cpu/cortex-m0.mk b/examples/build_system/make/cpu/cortex-m0.mk
index feb0f395b..c2c33a2ee 100644
--- a/examples/build_system/make/cpu/cortex-m0.mk
+++ b/examples/build_system/make/cpu/cortex-m0.mk
@@ -4,10 +4,18 @@ ifeq ($(TOOLCHAIN),gcc)
     -mcpu=cortex-m0 \
     -mfloat-abi=soft \
 
+else ifeq ($(TOOLCHAIN),clang)
+  CFLAGS += \
+	  --target=arm-none-eabi \
+	  -mcpu=cortex-m0 \
+
 else ifeq ($(TOOLCHAIN),iar)
   # IAR Flags
   CFLAGS += --cpu cortex-m0
   ASFLAGS += --cpu cortex-m0
+
+else
+  $(error "TOOLCHAIN is not supported")
 endif
 
 # For freeRTOS port source
diff --git a/examples/build_system/make/cpu/cortex-m0plus.mk b/examples/build_system/make/cpu/cortex-m0plus.mk
index b416b7a4a..fe8feb227 100644
--- a/examples/build_system/make/cpu/cortex-m0plus.mk
+++ b/examples/build_system/make/cpu/cortex-m0plus.mk
@@ -4,10 +4,18 @@ ifeq ($(TOOLCHAIN),gcc)
     -mcpu=cortex-m0plus \
     -mfloat-abi=soft \
 
+else ifeq ($(TOOLCHAIN),clang)
+  CFLAGS += \
+	  --target=arm-none-eabi \
+	  -mcpu=cortex-m0plus \
+
 else ifeq ($(TOOLCHAIN),iar)
   # IAR Flags
   CFLAGS += --cpu cortex-m0+
   ASFLAGS += --cpu cortex-m0+
+
+else
+  $(error "TOOLCHAIN is not supported")
 endif
 
 # For freeRTOS port source
diff --git a/examples/build_system/make/cpu/cortex-m23.mk b/examples/build_system/make/cpu/cortex-m23.mk
index 29542d8e8..7ab758352 100644
--- a/examples/build_system/make/cpu/cortex-m23.mk
+++ b/examples/build_system/make/cpu/cortex-m23.mk
@@ -4,10 +4,18 @@ ifeq ($(TOOLCHAIN),gcc)
     -mcpu=cortex-m23 \
     -mfloat-abi=soft \
 
+else ifeq ($(TOOLCHAIN),clang)
+  CFLAGS += \
+	  --target=arm-none-eabi \
+	  -mcpu=cortex-m23 \
+
 else ifeq ($(TOOLCHAIN),iar)
   # IAR Flags
   CFLAGS += --cpu cortex-m23
   ASFLAGS += --cpu cortex-m23
+
+else
+  $(error "TOOLCHAIN is not supported")
 endif
 
 # For freeRTOS port source
diff --git a/examples/build_system/make/cpu/cortex-m3.mk b/examples/build_system/make/cpu/cortex-m3.mk
index 7a34b9e04..b6325313f 100644
--- a/examples/build_system/make/cpu/cortex-m3.mk
+++ b/examples/build_system/make/cpu/cortex-m3.mk
@@ -4,13 +4,18 @@ ifeq ($(TOOLCHAIN),gcc)
     -mcpu=cortex-m3 \
     -mfloat-abi=soft \
 
+else ifeq ($(TOOLCHAIN),clang)
+  CFLAGS += \
+	  --target=arm-none-eabi \
+	  -mcpu=cortex-m3 \
+
 else ifeq ($(TOOLCHAIN),iar)
   # IAR Flags
-  CFLAGS += \
-    --cpu cortex-m3 \
+  CFLAGS += --cpu cortex-m3
+  ASFLAGS += --cpu cortex-m3
 
-  ASFLAGS += \
-     --cpu cortex-m3
+else
+  $(error "TOOLCHAIN is not supported")
 endif
 
 # For freeRTOS port source
diff --git a/examples/build_system/make/cpu/cortex-m33-nodsp-nofp.mk b/examples/build_system/make/cpu/cortex-m33-nodsp-nofp.mk
index c65f24376..405053dd0 100644
--- a/examples/build_system/make/cpu/cortex-m33-nodsp-nofp.mk
+++ b/examples/build_system/make/cpu/cortex-m33-nodsp-nofp.mk
@@ -1,16 +1,24 @@
 ifeq ($(TOOLCHAIN),gcc)
-	CFLAGS += \
+  CFLAGS += \
 	-mthumb \
 	-mcpu=cortex-m33+nodsp \
 	-mfloat-abi=soft \
 
+else ifeq ($(TOOLCHAIN),clang)
+  CFLAGS += \
+	  --target=arm-none-eabi \
+	  -mcpu=cortex-m33 \
+	  -mfpu=softvp \
+
 else ifeq ($(TOOLCHAIN),iar)
-	CFLAGS += \
+  CFLAGS += \
 		--cpu cortex-m33+nodsp \
 
-	ASFLAGS += \
+  ASFLAGS += \
 		--cpu cortex-m33+nodsp \
 
+else
+  $(error "TOOLCHAIN is not supported")
 endif
 
 FREERTOS_PORTABLE_SRC ?= $(FREERTOS_PORTABLE_PATH)/ARM_CM33_NTZ/non_secure
diff --git a/examples/build_system/make/cpu/cortex-m33.mk b/examples/build_system/make/cpu/cortex-m33.mk
index fe5b7b380..47b0eaecd 100644
--- a/examples/build_system/make/cpu/cortex-m33.mk
+++ b/examples/build_system/make/cpu/cortex-m33.mk
@@ -5,15 +5,23 @@ ifeq ($(TOOLCHAIN),gcc)
     -mfloat-abi=hard \
     -mfpu=fpv5-sp-d16 \
 
+else ifeq ($(TOOLCHAIN),clang)
+  CFLAGS += \
+	  --target=arm-none-eabi \
+	  -mcpu=cortex-m33 \
+	  -mfpu=fpv5-sp-d16 \
+
 else ifeq ($(TOOLCHAIN),iar)
-	CFLAGS += \
+  CFLAGS += \
 		--cpu cortex-m33 \
 		--fpu VFPv5-SP \
 
-	ASFLAGS += \
+  ASFLAGS += \
 		--cpu cortex-m33 \
 		--fpu VFPv5-SP \
 
+else
+  $(error "TOOLCHAIN is not supported")
 endif
 
 FREERTOS_PORTABLE_SRC ?= $(FREERTOS_PORTABLE_PATH)/ARM_CM33_NTZ/non_secure
diff --git a/examples/build_system/make/cpu/cortex-m4.mk b/examples/build_system/make/cpu/cortex-m4.mk
index d8776b5d8..4e16819d1 100644
--- a/examples/build_system/make/cpu/cortex-m4.mk
+++ b/examples/build_system/make/cpu/cortex-m4.mk
@@ -5,9 +5,18 @@ ifeq ($(TOOLCHAIN),gcc)
     -mfloat-abi=hard \
     -mfpu=fpv4-sp-d16 \
 
+else ifeq ($(TOOLCHAIN),clang)
+  CFLAGS += \
+	  --target=arm-none-eabi \
+	  -mcpu=cortex-m4 \
+	  -mfpu=fpv4-sp-d16 \
+
 else ifeq ($(TOOLCHAIN),iar)
   CFLAGS += --cpu cortex-m4 --fpu VFPv4
   ASFLAGS += --cpu cortex-m4 --fpu VFPv4
+
+else
+  $(error "TOOLCHAIN is not supported")
 endif
 
 FREERTOS_PORTABLE_SRC ?= $(FREERTOS_PORTABLE_PATH)/ARM_CM4F
diff --git a/examples/build_system/make/cpu/cortex-m7.mk b/examples/build_system/make/cpu/cortex-m7.mk
index 0e3461787..3e6116179 100644
--- a/examples/build_system/make/cpu/cortex-m7.mk
+++ b/examples/build_system/make/cpu/cortex-m7.mk
@@ -5,6 +5,12 @@ ifeq ($(TOOLCHAIN),gcc)
     -mfloat-abi=hard \
     -mfpu=fpv5-d16 \
 
+else ifeq ($(TOOLCHAIN),clang)
+  CFLAGS += \
+	  --target=arm-none-eabi \
+	  -mcpu=cortex-m7 \
+	  -mfpu=fpv5-d16 \
+
 else ifeq ($(TOOLCHAIN),iar)
   CFLAGS += \
   	--cpu cortex-m7 \
@@ -14,6 +20,8 @@ else ifeq ($(TOOLCHAIN),iar)
 		--cpu cortex-m7 \
 		--fpu VFPv5_D16 \
 
+else
+  $(error "TOOLCHAIN is not supported")
 endif
 
 FREERTOS_PORTABLE_SRC ?= $(FREERTOS_PORTABLE_PATH)/ARM_CM7/r0p1
diff --git a/examples/build_system/make/cpu/msp430.mk b/examples/build_system/make/cpu/msp430.mk
index 06340d23b..6daa2c38d 100644
--- a/examples/build_system/make/cpu/msp430.mk
+++ b/examples/build_system/make/cpu/msp430.mk
@@ -1,7 +1,11 @@
 ifeq ($(TOOLCHAIN),gcc)
   # nothing to add
+else ifeq ($(TOOLCHAIN),clang)
+  # nothing to add
 else ifeq ($(TOOLCHAIN),iar)
   # nothing to add
+else
+  $(error "TOOLCHAIN is not supported")
 endif
 
 # For freeRTOS port source