• error: C3900U: Unrecognized option '---'.
    I just Started to work with CMSIS but when I Build a sample Code in my keil the following Error come up: core_cm3.c: error: C3900U: Unrecognized option '---'. I should mention that I have added the...
  • error: C3900U: Unrecognized option '---'.
    I just Started to work with CMSIS but when I Build a sample Code in my keil the following Error come up: core_cm3.c: error: C3900U: Unrecognized option '---'. I should mention that I have added the...
  • compiler gives message: unrecognized option -O3
    On my Windows7 the compiler does not accept the command line option -O3: error: C3900U: Unrecognized option: '-O3'. On XP it compiles ok. Projects settings are exactly the some on Win7 and XP...
  • compiler gives message: unrecognized option -O3
    On my Windows7 the compiler does not accept the command line option -O3: error: C3900U: Unrecognized option: '-O3'. On XP it compiles ok. Projects settings are exactly the some on Win7 and XP...
  • SOS !! unrecognized option '-pu' - what is this ??!!
    dear all Keil is driving me nuts, i just opened an example and when i compile the project an error appears which is unrecognized option '-pu' what should i do?