I'm using compiler
gcc-arm-8.2-2019.01-x86_64-aarch64-elf/bin/aarch64-elf-gcc
I found that the default for COMMON section is -fcommon, which will generate COMMON section, I have to use -fno-common explictly in CFLAGS.
But my understanding it should have -fno-common as defaut? Anything that changed?
Starting from AC6.3 it's also default to `-fno-common`