diff --git a/Makefile b/Makefile
index 1fc4d95..637d878 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,11 @@
-ARMCC?= arm-none-eabi-gcc
 ARMOBJDUMP?= arm-none-eabi-objdump
+ARMCC?= arm-none-eabi-gcc
 ARMTARGET?= -mcpu=cortex-m3 -mthumb -DSTROBE_SINGLE_THREAD=1
 
+# Clang doesn't work due to no-nano libc
+#ARMCC?=clang-mp-9.0
+#ARMTARGET?= -nostdlib -ffreestanding -target arm-none-eabi -mcpu=cortex-m3 -mfloat-abi=soft  -mthumb
+
 PROG = lora.irr
 PROGEXT = .elf