const SIG: type = if (is_mips) struct {
    pub const BLOCK = 1;
    pub const UNBLOCK = 2;
    pub const SETMASK = 3;

    pub const HUP = 1;
    pub const INT = 2;
    pub const QUIT = 3;
    pub const ILL = 4;
    pub const TRAP = 5;
    pub const ABRT = 6;
    pub const IOT = ABRT;
    pub const BUS = 7;
    pub const FPE = 8;
    pub const KILL = 9;
    pub const USR1 = 10;
    pub const SEGV = 11;
    pub const USR2 = 12;
    pub const PIPE = 13;
    pub const ALRM = 14;
    pub const TERM = 15;
    pub const STKFLT = 16;
    pub const CHLD = 17;
    pub const CONT = 18;
    pub const STOP = 19;
    pub const TSTP = 20;
    pub const TTIN = 21;
    pub const TTOU = 22;
    pub const URG = 23;
    pub const XCPU = 24;
    pub const XFSZ = 25;
    pub const VTALRM = 26;
    pub const PROF = 27;
    pub const WINCH = 28;
    pub const IO = 29;
    pub const POLL = 29;
    pub const PWR = 30;
    pub const SYS = 31;
    pub const UNUSED = SIG.SYS;

    pub const ERR = @as(?Sigaction.handler_fn, @ptrFromInt(maxInt(usize)));
    pub const DFL = @as(?Sigaction.handler_fn, @ptrFromInt(0));
    pub const IGN = @as(?Sigaction.handler_fn, @ptrFromInt(1));
} else if (is_sparc) struct {
    pub const BLOCK = 1;
    pub const UNBLOCK = 2;
    pub const SETMASK = 4;

    pub const HUP = 1;
    pub const INT = 2;
    pub const QUIT = 3;
    pub const ILL = 4;
    pub const TRAP = 5;
    pub const ABRT = 6;
    pub const EMT = 7;
    pub const FPE = 8;
    pub const KILL = 9;
    pub const BUS = 10;
    pub const SEGV = 11;
    pub const SYS = 12;
    pub const PIPE = 13;
    pub const ALRM = 14;
    pub const TERM = 15;
    pub const URG = 16;
    pub const STOP = 17;
    pub const TSTP = 18;
    pub const CONT = 19;
    pub const CHLD = 20;
    pub const TTIN = 21;
    pub const TTOU = 22;
    pub const POLL = 23;
    pub const XCPU = 24;
    pub const XFSZ = 25;
    pub const VTALRM = 26;
    pub const PROF = 27;
    pub const WINCH = 28;
    pub const LOST = 29;
    pub const USR1 = 30;
    pub const USR2 = 31;
    pub const IOT = ABRT;
    pub const CLD = CHLD;
    pub const PWR = LOST;
    pub const IO = SIG.POLL;

    pub const ERR = @as(?Sigaction.handler_fn, @ptrFromInt(maxInt(usize)));
    pub const DFL = @as(?Sigaction.handler_fn, @ptrFromInt(0));
    pub const IGN = @as(?Sigaction.handler_fn, @ptrFromInt(1));
} else struct {
    pub const BLOCK = 0;
    pub const UNBLOCK = 1;
    pub const SETMASK = 2;

    pub const HUP = 1;
    pub const INT = 2;
    pub const QUIT = 3;
    pub const ILL = 4;
    pub const TRAP = 5;
    pub const ABRT = 6;
    pub const IOT = ABRT;
    pub const BUS = 7;
    pub const FPE = 8;
    pub const KILL = 9;
    pub const USR1 = 10;
    pub const SEGV = 11;
    pub const USR2 = 12;
    pub const PIPE = 13;
    pub const ALRM = 14;
    pub const TERM = 15;
    pub const STKFLT = 16;
    pub const CHLD = 17;
    pub const CONT = 18;
    pub const STOP = 19;
    pub const TSTP = 20;
    pub const TTIN = 21;
    pub const TTOU = 22;
    pub const URG = 23;
    pub const XCPU = 24;
    pub const XFSZ = 25;
    pub const VTALRM = 26;
    pub const PROF = 27;
    pub const WINCH = 28;
    pub const IO = 29;
    pub const POLL = 29;
    pub const PWR = 30;
    pub const SYS = 31;
    pub const UNUSED = SIG.SYS;

    pub const ERR = @as(?Sigaction.handler_fn, @ptrFromInt(maxInt(usize)));
    pub const DFL = @as(?Sigaction.handler_fn, @ptrFromInt(0));
    pub const IGN = @as(?Sigaction.handler_fn, @ptrFromInt(1));
};