Victim board is not answering back after changment in the MCU_FLAGS

I changed the makefile under hal/stm32f3 and set
MCU_FLAGS = -mcpu=cortex-m4 -mfpu=vfpv3 -mfloat-abi=softfp
so that I will be able to run an optimized implementation usng fpu, however I noticed two things

  1. A weird space is introduced in the ($TAGET-PLAT) value e.g., instead f simpleserial-glich-CWLITEARM I have simpleserial-glitch -CWLITEARM
    Hence, during the creation of the *.hex *.bin etc files I got an error
    I tried to solve this by introducing this line in the makefile


But it seemed to me that I cheated :smiley: and than problem is bigger than a tiny space
because I got the second problem
2) The board is sending back an empty message!

Any suggestions or hints to solve this?