         return Glibc.MSG_DONTWAIT
     }
     
+    #if os(FreeBSD)
     public var MSG_EOF: macro_int_t {
         return Glibc.MSG_EOF
     }

        return Glibc.SCM_TIMESTAMP
    }
    
    public var SCM_CREDS: macro_int_t {
        return Glibc.SCM_CREDS
    }

    public var SCM_TIMESTAMP_MONOTONIC: macro_int_t {
        return Glibc.SCM_TIMESTAMP_MONOTONIC
    }
    #endif
    
    public var SHUT_RD: Int {
        return Glibc.SHUT_RD
    }
    
    public var SHUT_WR: Int {
        return Glibc.SHUT_WR
    }
    
    public var SHUT_RDWR: Int {
        return Glibc.SHUT_RDWR
    }
    
