I asked because it was quite tedious to remove them for pkg/-related content because sometimes the Makefiles of these projects (I'm speaking of libcoap e. g.) search in $PATH then for "@arm-none-eabi-gcc" e. g. forcing one to reassign CC in a very complicated manner since CC definitions must not be recursive in Make. Furthermore, I do not find it very clean to add those to the macros. Also: why is this a thing left to the board driver developer and not in the main Makefile? An exceptable alternative could be to have a silencing macro 

```Makefile
QUITE := 1
ifeq(QUITE,1)
AD=@
else
AD=
endif
```

and then 

```Makefile
<target>:
    $(AD)$(CC) … 
```

This way it would be configurable, too, as wished by @LudwigOrtmann