lang/python3.11: backport netlink patch

this patch backports GH-107812: extend socket's netlink support to FreeBSD
see python/cpython#107813
for the patch.

see python/cpython#107812
for the discussion on the backport itself.

Sponsored by: The FreeBSD Foundation

lang/python311/files/patch-Modules__socketmodule.h

@@ -0,0 +1,11 @@
+--- Modules/socketmodule.h.orig
++++ Modules/socketmodule.h
+@@ -89,6 +89,8 @@ typedef int socklen_t;
+ #  include <asm/types.h>
+ # endif
+ # include <linux/netlink.h>
++#elif defined(HAVE_NETLINK_NETLINK_H)
++# include <netlink/netlink.h>
+ #else
+ #  undef AF_NETLINK
+ #endif

lang/python311/files/patch-configure

@@ -1,11 +1,41 @@
 --- configure.orig	2022-12-07 13:31:07 UTC
 +++ configure
-@@ -7630,7 +7630,7 @@ if test "$Py_LTO" = 'true' ; then
+
+@@ -8336,7 +8336,7 @@ fi
 
  if test "$Py_LTO" = 'true' ; then
    case $CC in
 -    *clang*)
 +    *clang*|cc)
        LDFLAGS_NOLTO="-fno-lto"
-                   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -flto=thin" >&5
- $as_echo_n "checking whether C compiler accepts -flto=thin... " >&6; }
+                   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -flto=thin" >&5
+ printf %s "checking whether C compiler accepts -flto=thin... " >&6; }
+@@ -10629,6 +10629,7 @@ fi
+
+
+ # On Linux, netlink.h requires asm/types.h
++# On FreeBSD, netlink.h is located in netlink/netlink.h
+ ac_fn_c_check_header_compile "$LINENO" "linux/netlink.h" "ac_cv_header_linux_netlink_h" "
+ #ifdef HAVE_ASM_TYPES_H
+ #include <asm/types.h>
+@@ -10643,6 +10644,20 @@ then :
+   printf "%s\n" "#define HAVE_LINUX_NETLINK_H 1" >>confdefs.h
+
+ fi
++ac_fn_c_check_header_compile "$LINENO" "netlink/netlink.h" "ac_cv_header_netlink_netlink_h" "
++#ifdef HAVE_ASM_TYPES_H
++#include <asm/types.h>
++#endif
++#ifdef HAVE_SYS_SOCKET_H
++#include <sys/socket.h>
++#endif
++
++"
++if test "x$ac_cv_header_netlink_netlink_h" = xyes
++then :
++  printf "%s\n" "#define HAVE_NETLINK_NETLINK_H 1" >>confdefs.h
++
++fi
+
+
+ # On Linux, qrtr.h requires asm/types.h

lang/python311/files/patch-pyconfig.h.in

@@ -0,0 +1,12 @@
+--- pyconfig.h.in.orig
++++ pyconfig.h.in
+@@ -835,6 +835,9 @@
+ /* Define to 1 if you have the <netinet/in.h> header file. */
+ #undef HAVE_NETINET_IN_H
+
++/* Define to 1 if you have the <netlink/netlink.h> header file. */
++#undef HAVE_NETLINK_NETLINK_H
++
+ /* Define to 1 if you have the <netpacket/packet.h> header file. */
+ #undef HAVE_NETPACKET_PACKET_H
+