mbed-os/tools/profiles/extensions/minimal-printf.json

{
    "GCC_ARM": {
       "common": ["-DMBED_MINIMAL_PRINTF"],
        "ld": ["-Wl,--wrap,printf", "-Wl,--wrap,sprintf", "-Wl,--wrap,snprintf",
               "-Wl,--wrap,vprintf", "-Wl,--wrap,vsprintf", "-Wl,--wrap,vsnprintf",
               "-Wl,--wrap,fprintf", "-Wl,--wrap,vfprintf"]
    },
    "ARMC6": {
        "common": ["-DMBED_MINIMAL_PRINTF"]
    },
    "ARM": {
        "common": ["-DMBED_MINIMAL_PRINTF"]
    },
    "uARM": {
        "common": ["-DMBED_MINIMAL_PRINTF"]
    },
    "IAR": {
        "common": ["-DMBED_MINIMAL_PRINTF"]
    }
}