Perform build and magnum tuning

Building o//third_party/python now takes 5 seconds on my PC

This change works towards modifying Python to use runtime dispatching
when appropriate. For example, when loading the magnums in the socket
module, it's a good idea to check if the magnum is zero, because that
means the local system platform doesn't support it.

third_party/python/Modules/socketmodule.h

@@ -1,160 +1,18 @@
-/* Socket module header file */
-
-/* Includes needed for the sockaddr_* symbols below */
-#ifndef MS_WINDOWS
-#ifdef __VMS
-#   include <socket.h>
-# else
-#   include <sys/socket.h>
-# endif
-// # include <netinet/in.h>
-# if !defined(__CYGWIN__)
-// #  include <netinet/tcp.h>
-# endif
-
-#else /* MS_WINDOWS */
-# include <winsock2.h>
-/* Windows 'supports' CMSG_LEN, but does not follow the POSIX standard
- * interface at all, so there is no point including the code that
- * attempts to use it.
- */
-# ifdef PySocket_BUILDING_SOCKET
-#  undef CMSG_LEN
-# endif
-# include <ws2tcpip.h>
-/* VC6 is shipped with old platform headers, and does not have MSTcpIP.h
- * Separate SDKs have all the functions we want, but older ones don't have
- * any version information.
- * I use SIO_GET_MULTICAST_FILTER to detect a decent SDK.
- */
-# ifdef SIO_GET_MULTICAST_FILTER
-#  include <MSTcpIP.h> /* for SIO_RCVALL */
-#  define HAVE_ADDRINFO
-#  define HAVE_SOCKADDR_STORAGE
-#  define HAVE_GETADDRINFO
-#  define HAVE_GETNAMEINFO
-#  define ENABLE_IPV6
-# else
-typedef int socklen_t;
-# endif /* IPPROTO_IPV6 */
-#endif /* MS_WINDOWS */
-
-#ifdef HAVE_SYS_UN_H
-// # include <sys/un.h>
-#else
-# undef AF_UNIX
-#endif
-
-#ifdef HAVE_LINUX_NETLINK_H
-# ifdef HAVE_ASM_TYPES_H
-#  include <asm/types.h>
-# endif
-# include <linux/netlink.h>
-#else
-#  undef AF_NETLINK
-#endif
-
-#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
-#include <bluetooth/bluetooth.h>
-#include <bluetooth/rfcomm.h>
-#include <bluetooth/l2cap.h>
-#include <bluetooth/sco.h>
-#include <bluetooth/hci.h>
-#endif
-
-#ifdef HAVE_BLUETOOTH_H
-#include <bluetooth.h>
-#endif
-
-#ifdef HAVE_NET_IF_H
-# include <net/if.h>
-#endif
-
-#ifdef HAVE_NETPACKET_PACKET_H
-# include <sys/ioctl.h>
-# include <netpacket/packet.h>
-#endif
-
-#ifdef HAVE_LINUX_TIPC_H
-# include <linux/tipc.h>
-#endif
-
-#ifdef HAVE_LINUX_CAN_H
-# include <linux/can.h>
-#else
-# undef AF_CAN
-# undef PF_CAN
-#endif
-
-#ifdef HAVE_LINUX_CAN_RAW_H
-#include <linux/can/raw.h>
-#endif
-
-#ifdef HAVE_LINUX_CAN_BCM_H
-#include <linux/can/bcm.h>
-#endif
-
-#ifdef HAVE_SYS_SYS_DOMAIN_H
-#include <sys/sys_domain.h>
-#endif
-#ifdef HAVE_SYS_KERN_CONTROL_H
-#include <sys/kern_control.h>
-#endif
-
-#ifdef HAVE_SOCKADDR_ALG
-#include <linux/if_alg.h>
-#ifndef AF_ALG
-#define AF_ALG 38
-#endif
-#ifndef SOL_ALG
-#define SOL_ALG 279
-#endif
-
-/* Linux 3.19 */
-#ifndef ALG_SET_AEAD_ASSOCLEN
-#define ALG_SET_AEAD_ASSOCLEN           4
-#endif
-#ifndef ALG_SET_AEAD_AUTHSIZE
-#define ALG_SET_AEAD_AUTHSIZE           5
-#endif
-/* Linux 4.8 */
-#ifndef ALG_SET_PUBKEY
-#define ALG_SET_PUBKEY                  6
-#endif
-
-#ifndef ALG_OP_SIGN
-#define ALG_OP_SIGN                     2
-#endif
-#ifndef ALG_OP_VERIFY
-#define ALG_OP_VERIFY                   3
-#endif
-
-#endif /* HAVE_SOCKADDR_ALG */
-
-
 #ifndef Py__SOCKET_H
 #define Py__SOCKET_H
+#include "libc/sock/sock.h"
 #ifdef __cplusplus
 extern "C" {
 #endif
+/* clang-format off */
 
 /* Python module and C API name */
 #define PySocket_MODULE_NAME    "_socket"
 #define PySocket_CAPI_NAME      "CAPI"
 #define PySocket_CAPSULE_NAME   PySocket_MODULE_NAME "." PySocket_CAPI_NAME
 
-/* Abstract the socket file descriptor type */
-#ifdef MS_WINDOWS
-typedef SOCKET SOCKET_T;
-#       ifdef MS_WIN64
-#               define SIZEOF_SOCKET_T 8
-#       else
-#               define SIZEOF_SOCKET_T 4
-#       endif
-#else
 typedef int SOCKET_T;
-#       define SIZEOF_SOCKET_T SIZEOF_INT
-#endif
+#define SIZEOF_SOCKET_T __SIZEOF_INT__
 
 #if SIZEOF_SOCKET_T <= SIZEOF_LONG
 #define PyLong_FromSocket_t(fd) PyLong_FromLong((SOCKET_T)(fd))
@@ -163,17 +21,12 @@ typedef int SOCKET_T;
 #define PyLong_FromSocket_t(fd) PyLong_FromLongLong((SOCKET_T)(fd))
 #define PyLong_AsSocket_t(fd) (SOCKET_T)PyLong_AsLongLong(fd)
 #endif
-
+ 
 /* Socket address */
 typedef union sock_addr {
     struct sockaddr_in in;
     struct sockaddr sa;
-#ifdef AF_UNIX
     struct sockaddr_un un;
-#endif
-#ifdef AF_NETLINK
-    struct sockaddr_nl nl;
-#endif
 #ifdef ENABLE_IPV6
     struct sockaddr_in6 in6;
     struct sockaddr_storage storage;
@@ -276,6 +129,5 @@ typedef struct {
 
 #ifdef __cplusplus
 }
-
 #endif
 #endif /* !Py__SOCKET_H */