X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fsys_socket_h.m4;h=8d4e7e1ebb42b5f29cc934e3e0d959bad7c88749;hb=1260097bab3ec039459f768a8185adde1a5c04a3;hp=d1cb9c20a0293a48e0895203ed4bc8e103573051;hpb=a40025e452a2be4e7222e2df512f6b955a6fc738;p=gnulib.git

diff --git a/m4/sys_socket_h.m4 b/m4/sys_socket_h.m4
index d1cb9c20a..8d4e7e1eb 100644
--- a/m4/sys_socket_h.m4
+++ b/m4/sys_socket_h.m4
@@ -1,5 +1,5 @@
-# sys_socket_h.m4 serial 12
-dnl Copyright (C) 2005-2009 Free Software Foundation, Inc.
+# sys_socket_h.m4 serial 22
+dnl Copyright (C) 2005-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -9,8 +9,20 @@ dnl From Simon Josefsson.
 AC_DEFUN([gl_HEADER_SYS_SOCKET],
 [
   AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
   AC_REQUIRE([AC_C_INLINE])
 
+  dnl On OSF/1, the functions recv(), send(), recvfrom(), sendto() have
+  dnl old-style declarations (with return type 'int' instead of 'ssize_t')
+  dnl unless _POSIX_PII_SOCKET is defined.
+  case "$host_os" in
+    osf*)
+      AC_DEFINE([_POSIX_PII_SOCKET], [1],
+        [Define to 1 in order to get the POSIX compatible declarations
+         of socket functions.])
+      ;;
+  esac
+
   AC_CACHE_CHECK([whether <sys/socket.h> is self-contained],
     [gl_cv_header_sys_socket_h_selfcontained],
     [
@@ -19,7 +31,6 @@ AC_DEFUN([gl_HEADER_SYS_SOCKET],
         [gl_cv_header_sys_socket_h_selfcontained=no])
     ])
   if test $gl_cv_header_sys_socket_h_selfcontained = yes; then
-    SYS_SOCKET_H=''
     dnl If the shutdown function exists, <sys/socket.h> should define
     dnl SHUT_RD, SHUT_WR, SHUT_RDWR.
     AC_CHECK_FUNCS([shutdown])
@@ -37,12 +48,10 @@ AC_DEFUN([gl_HEADER_SYS_SOCKET],
         SYS_SOCKET_H='sys/socket.h'
       fi
     fi
-  else
-    SYS_SOCKET_H='sys/socket.h'
   fi
   # We need to check for ws2tcpip.h now.
   gl_PREREQ_SYS_H_SOCKET
-  AC_CHECK_TYPES([struct sockaddr_storage],,,[
+  AC_CHECK_TYPES([struct sockaddr_storage, sa_family_t],,,[
   /* sys/types.h is not needed according to POSIX, but the
      sys/socket.h in i386-unknown-freebsd4.10 and
      powerpc-apple-darwin5.5 required it. */
@@ -56,28 +65,49 @@ AC_DEFUN([gl_HEADER_SYS_SOCKET],
 ])
   if test $ac_cv_type_struct_sockaddr_storage = no; then
     HAVE_STRUCT_SOCKADDR_STORAGE=0
-    SYS_SOCKET_H='sys/socket.h'
   fi
-  if test -n "$SYS_SOCKET_H"; then
-    gl_PREREQ_SYS_H_WINSOCK2
+  if test $ac_cv_type_sa_family_t = no; then
+    HAVE_SA_FAMILY_T=0
+  fi
+  if test $ac_cv_type_struct_sockaddr_storage != no; then
+    AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family],
+      [],
+      [HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=0],
+      [#include <sys/types.h>
+       #ifdef HAVE_SYS_SOCKET_H
+       #include <sys/socket.h>
+       #endif
+       #ifdef HAVE_WS2TCPIP_H
+       #include <ws2tcpip.h>
+       #endif
+      ])
+  fi
+  if test $HAVE_STRUCT_SOCKADDR_STORAGE = 0 || test $HAVE_SA_FAMILY_T = 0 \
+     || test $HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = 0; then
+    SYS_SOCKET_H='sys/socket.h'
   fi
-  AC_SUBST([SYS_SOCKET_H])
+  gl_PREREQ_SYS_H_WINSOCK2
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+/* Some systems require prerequisite headers.  */
+#include <sys/types.h>
+#include <sys/socket.h>
+    ]], [socket connect accept bind getpeername getsockname getsockopt
+    listen recv send recvfrom sendto setsockopt shutdown accept4])
 ])
 
 AC_DEFUN([gl_PREREQ_SYS_H_SOCKET],
 [
   dnl Check prerequisites of the <sys/socket.h> replacement.
+  AC_REQUIRE([gl_CHECK_SOCKET_HEADERS])
   gl_CHECK_NEXT_HEADERS([sys/socket.h])
   if test $ac_cv_header_sys_socket_h = yes; then
     HAVE_SYS_SOCKET_H=1
     HAVE_WS2TCPIP_H=0
   else
     HAVE_SYS_SOCKET_H=0
-    dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
-    dnl the check for those headers unconditional; yet cygwin reports
-    dnl that the headers are present but cannot be compiled (since on
-    dnl cygwin, all socket information should come from sys/socket.h).
-    AC_CHECK_HEADERS([ws2tcpip.h])
     if test $ac_cv_header_ws2tcpip_h = yes; then
       HAVE_WS2TCPIP_H=1
     else
@@ -88,7 +118,7 @@ AC_DEFUN([gl_PREREQ_SYS_H_SOCKET],
   AC_SUBST([HAVE_WS2TCPIP_H])
 ])
 
-# Common prerequisites of of the <sys/socket.h> replacement and of the
+# Common prerequisites of the <sys/socket.h> replacement and of the
 # <sys/select.h> replacement.
 # Sets and substitutes HAVE_WINSOCK2_H.
 AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2],
@@ -117,7 +147,9 @@ AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
 AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
@@ -136,5 +168,10 @@ AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
   GNULIB_SENDTO=0;      AC_SUBST([GNULIB_SENDTO])
   GNULIB_SETSOCKOPT=0;  AC_SUBST([GNULIB_SETSOCKOPT])
   GNULIB_SHUTDOWN=0;    AC_SUBST([GNULIB_SHUTDOWN])
+  GNULIB_ACCEPT4=0;     AC_SUBST([GNULIB_ACCEPT4])
   HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE])
+  HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1;
+                        AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY])
+  HAVE_SA_FAMILY_T=1;   AC_SUBST([HAVE_SA_FAMILY_T])
+  HAVE_ACCEPT4=1;       AC_SUBST([HAVE_ACCEPT4])
 ])