add '-target' to whitelist

[tonnico]

e.g. -target arm-none-eabi In your prefered build system you could add this build flag. for Makefile:

ifeq($(YCMG), 1)
    CFLAGS += -target arm-none-eabi
endif

and start the generator in vim with: YCMGeneratConfig -M=YCMG=1 -f

Probably this could be done automatically with the fake build system?