Check for <sys/socket.h>. Include it before

including <net/if.h>.  Move check for <net/if.h> before its use.

ChangeLog

+2003-12-24  Andreas Schwab  <schwab@suse.de>
+
+	* configure.in: Check for <sys/socket.h>.  Include it before
+	including <net/if.h>.  Move check for <net/if.h> before it's use.
+
 2003-12-24  Jan Dj,Ad(Brv  <jan.h.d@swipnet.se>
 
 	* Makefile.in (install-arch-dep): Don't let cd output go into

configure.in

@@ -1507,6 +1507,12 @@ if test $emacs_cv_struct_exception != yes; then
   AC_DEFINE(NO_MATHERR, 1, [Define to 1 if you don't have struct exception in math.h.])
 fi
 
+AC_CHECK_HEADERS(sys/socket.h)
+AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
+#if HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif])
+
 dnl checks for structure members
 AC_STRUCT_TM
 AC_STRUCT_TIMEZONE
@@ -1516,7 +1522,14 @@ AC_CHECK_MEMBER(struct tm.tm_gmtoff,
 		[#include <time.h>])
 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr, 
 		  struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
-		  struct ifreq.ifr_addr], , ,[#include <net/if.h>])
+		  struct ifreq.ifr_addr], , ,
+		 [AC_INCLUDES_DEFAULT
+#if HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#if HAVE_NET_IF_H
+#include <net/if.h>
+#endif])
 
 dnl checks for compiler characteristics
 
@@ -2510,7 +2523,7 @@ dnl Fixme: Not used.  Should this be HAVE_SOCKETS?
 	    [Define to 1 if you have inet sockets.])
 fi
 
-AC_CHECK_HEADERS(sys/ioctl.h net/if.h)
+AC_CHECK_HEADERS(sys/ioctl.h)
 
 if test -f /usr/lpp/X11/bin/smt.exp; then
   AC_DEFINE(HAVE_AIX_SMT_EXP, 1,