source type(c)
    "iec/cia1571d.c",
    "iec/cia1581d.c",
    "iec/fdd.c",
    "iec/glue1571.c",
    "iec/iec.c",
    "iec/iec-cmdline-options.c",
    "iec/iec-resources.c",
    "iec/iecrom.c",
    "iec/memiec.c",
    "iec/pc8477.c",
    "iec/via1d1541.c",
    "iec/via4000.c",
    "iec/wd1770.c"
