pub const mach_header_64 = extern struct {
    magic: u32 = MH_MAGIC_64,
    cputype: cpu_type_t = 0,
    cpusubtype: cpu_subtype_t = 0,
    filetype: u32 = 0,
    ncmds: u32 = 0,
    sizeofcmds: u32 = 0,
    flags: u32 = 0,
    reserved: u32 = 0,
}