Attaching output of:
arm-elf-eabi-gcc -dM -E
-B/usr/home/thomas/work/build/env_newlib/arm-elf-eabi/thumb/newlib/
-isystem
/usr/home/thomas/work/build/env_newlib/arm-elf-eabi/thumb/newlib/targ-include
-isystem /usr/home/thomas/work/env/src/newlib/libc/include
-L/usr/home/thomas/work/build/env_newlib/./ld -mthumb
-DPACKAGE_NAME=\"newlib\" -DPACKAGE_TARNAME=\"newlib\"
-DPACKAGE_VERSION=\"1.19.0\" -DPACKAGE_STRING=\"newlib\ 1.19.0\"
-DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -I.
-I../../../../../../../../env/src/newlib/libc/sys/arm -Os
-DARM_RDI_MONITOR -fno-builtin -Os -DARM_RDI_MONITOR -fno-builtin -g -Os
-mthumb -o crt0.defines
../../../../../../../../env/src/newlib/libc/sys/arm/crt0.S