Fix _socket compilation failures on non-Linux buildbots (cf. issue #1746656).
diff --git a/Modules/socketmodule.h b/Modules/socketmodule.h
index f064795..db44fd3 100644
--- a/Modules/socketmodule.h
+++ b/Modules/socketmodule.h
@@ -59,9 +59,12 @@
#include <bluetooth.h>
#endif
+#ifdef HAVE_NET_IF_H
+# include <net/if.h>
+#endif
+
#ifdef HAVE_NETPACKET_PACKET_H
# include <sys/ioctl.h>
-# include <net/if.h>
# include <netpacket/packet.h>
#endif
diff --git a/configure b/configure
index ae9edce..d5506ef 100755
--- a/configure
+++ b/configure
@@ -6037,7 +6037,7 @@
sys/param.h sys/poll.h sys/select.h sys/sendfile.h sys/socket.h sys/statvfs.h \
sys/stat.h sys/termio.h sys/time.h \
sys/times.h sys/types.h sys/uio.h sys/un.h sys/utsname.h sys/wait.h pty.h \
-libutil.h sys/resource.h netpacket/packet.h sysexits.h bluetooth.h \
+libutil.h sys/resource.h net/if.h netpacket/packet.h sysexits.h bluetooth.h \
bluetooth/bluetooth.h linux/tipc.h spawn.h util.h
do :
as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
diff --git a/configure.in b/configure.in
index 52f07e6..3ae9a34 100644
--- a/configure.in
+++ b/configure.in
@@ -1293,7 +1293,7 @@
sys/param.h sys/poll.h sys/select.h sys/sendfile.h sys/socket.h sys/statvfs.h \
sys/stat.h sys/termio.h sys/time.h \
sys/times.h sys/types.h sys/uio.h sys/un.h sys/utsname.h sys/wait.h pty.h \
-libutil.h sys/resource.h netpacket/packet.h sysexits.h bluetooth.h \
+libutil.h sys/resource.h net/if.h netpacket/packet.h sysexits.h bluetooth.h \
bluetooth/bluetooth.h linux/tipc.h spawn.h util.h)
AC_HEADER_DIRENT
AC_HEADER_MAJOR
diff --git a/pyconfig.h.in b/pyconfig.h.in
index b24c4b0..95d71c9 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -539,6 +539,9 @@
/* Define to 1 if you have the <netpacket/packet.h> header file. */
#undef HAVE_NETPACKET_PACKET_H
+/* Define to 1 if you have the <net/if.h> header file. */
+#undef HAVE_NET_IF_H
+
/* Define to 1 if you have the `nice' function. */
#undef HAVE_NICE