2006-07-04 Marcus Brinkmann <marcus@g10code.de>

	* configure.ac: Call gl_TYPE_SOCKLEN_T instead of the other
	socklen_t checks.

m4/
2006-07-04  Marcus Brinkmann  <marcus@g10code.de>

	* sys_socket_h.m4, socklen.m4, onceonly.m4: New files from gnulib.

src/
2006-07-04  Marcus Brinkmann  <marcus@g10code.de>

	* gcrypt.h [!HAVE_SYS_SOCKET_H]: Do not include sys/socket.h, but
	the appropriate windows socket header.

4 files changed, 145 insertions, 0 deletions

diff --git a/m4/ChangeLog b/m4/ChangeLog
index c730c806..d0d29b46 100644
--- a/m4/ChangeLog
+++ b/m4/ChangeLog
@@ -1,3 +1,7 @@
+2006-07-04  Marcus Brinkmann  <marcus@g10code.de>
+
+	* sys_socket_h.m4, socklen.m4, onceonly.m4: New files from gnulib.
+	
 2004-04-06  Werner Koch  <wk@gnupg.org>
 
 	* libtool.m4: Updated from 1.5.4
diff --git a/m4/onceonly.m4 b/m4/onceonly.m4
new file mode 100644
index 00000000..6d913faf
--- /dev/null
+++ b/m4/onceonly.m4
@@ -0,0 +1,66 @@
+# onceonly.m4 serial 4 (gettext-0.15)
+dnl Copyright (C) 2002-2003, 2006 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.
+
+dnl This file defines some "once only" variants of standard autoconf macros.
+dnl   AC_CHECK_HEADERS_ONCE         like  AC_CHECK_HEADERS
+dnl   AC_CHECK_FUNCS_ONCE           like  AC_CHECK_FUNCS
+dnl   AC_CHECK_DECLS_ONCE           like  AC_CHECK_DECLS
+dnl   AC_REQUIRE([AC_HEADER_STDC])  like  AC_HEADER_STDC
+dnl The advantage is that the check for each of the headers/functions/decls
+dnl will be put only once into the 'configure' file. It keeps the size of
+dnl the 'configure' file down, and avoids redundant output when 'configure'
+dnl is run.
+dnl The drawback is that the checks cannot be conditionalized. If you write
+dnl   if some_condition; then gl_CHECK_HEADERS(stdlib.h); fi
+dnl inside an AC_DEFUNed function, the gl_CHECK_HEADERS macro call expands to
+dnl empty, and the check will be inserted before the body of the AC_DEFUNed
+dnl function.
+
+dnl This file is only needed in autoconf <= 2.59.  Newer versions of autoconf
+dnl have this macro built-in.  But about AC_CHECK_DECLS_ONCE: note that in
+dnl autoconf >= 2.60 the symbol separator is a comma, whereas here it is
+dnl whitespace.
+
+dnl Autoconf version 2.57 or newer is recommended.
+AC_PREREQ(2.54)
+
+# AC_CHECK_HEADERS_ONCE(HEADER1 HEADER2 ...) is a once-only variant of
+# AC_CHECK_HEADERS(HEADER1 HEADER2 ...).
+AC_DEFUN([AC_CHECK_HEADERS_ONCE], [
+  :
+  AC_FOREACH([gl_HEADER_NAME], [$1], [
+    AC_DEFUN([gl_CHECK_HEADER_]m4_quote(translit(m4_defn([gl_HEADER_NAME]),
+                                                 [-./], [___])), [
+      AC_CHECK_HEADERS(gl_HEADER_NAME)
+    ])
+    AC_REQUIRE([gl_CHECK_HEADER_]m4_quote(translit(gl_HEADER_NAME,
+                                                   [-./], [___])))
+  ])
+])
+
+# AC_CHECK_FUNCS_ONCE(FUNC1 FUNC2 ...) is a once-only variant of
+# AC_CHECK_FUNCS(FUNC1 FUNC2 ...).
+AC_DEFUN([AC_CHECK_FUNCS_ONCE], [
+  :
+  AC_FOREACH([gl_FUNC_NAME], [$1], [
+    AC_DEFUN([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME]), [
+      AC_CHECK_FUNCS(m4_defn([gl_FUNC_NAME]))
+    ])
+    AC_REQUIRE([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME]))
+  ])
+])
+
+# AC_CHECK_DECLS_ONCE(DECL1 DECL2 ...) is a once-only variant of
+# AC_CHECK_DECLS(DECL1, DECL2, ...).
+AC_DEFUN([AC_CHECK_DECLS_ONCE], [
+  :
+  AC_FOREACH([gl_DECL_NAME], [$1], [
+    AC_DEFUN([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME]), [
+      AC_CHECK_DECLS(m4_defn([gl_DECL_NAME]))
+    ])
+    AC_REQUIRE([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME]))
+  ])
+])
diff --git a/m4/socklen.m4 b/m4/socklen.m4
new file mode 100644
index 00000000..5e3765a6
--- /dev/null
+++ b/m4/socklen.m4
@@ -0,0 +1,52 @@
+# socklen.m4 serial 4
+dnl Copyright (C) 2005, 2006 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.
+
+dnl From Albert Chin, Windows fixes from Simon Josefsson.
+
+dnl Check for socklen_t: historically on BSD it is an int, and in
+dnl POSIX 1g it is a type of its own, but some platforms use different
+dnl types for the argument to getsockopt, getpeername, etc.  So we
+dnl have to test to find something that will work.
+
+dnl On mingw32, socklen_t is in ws2tcpip.h ('int'), so we try to find
+dnl it there first.  That file is included by gnulib's socket_.h, which
+dnl all users of this module should include.  Cygwin must not include
+dnl ws2tcpip.h.
+AC_DEFUN([gl_TYPE_SOCKLEN_T],
+  [AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl
+   AC_CHECK_TYPE([socklen_t], ,
+     [AC_MSG_CHECKING([for socklen_t equivalent])
+      AC_CACHE_VAL([gl_cv_gl_cv_socklen_t_equiv],
+	[# Systems have either "struct sockaddr *" or
+	 # "void *" as the second argument to getpeername
+	 gl_cv_socklen_t_equiv=
+	 for arg2 in "struct sockaddr" void; do
+	   for t in int size_t "unsigned int" "long int" "unsigned long int"; do
+	     AC_TRY_COMPILE(
+	       [#include <sys/types.h>
+		#include <sys/socket.h>
+
+		int getpeername (int, $arg2 *, $t *);],
+	       [$t len;
+		getpeername (0, 0, &len);],
+	       [gl_cv_socklen_t_equiv="$t"])
+	     test "$gl_cv_socklen_t_equiv" != "" && break
+	   done
+	   test "$gl_cv_socklen_t_equiv" != "" && break
+	 done
+      ])
+      if test "$gl_cv_socklen_t_equiv" = ""; then
+	AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
+      fi
+      AC_MSG_RESULT([$gl_cv_socklen_t_equiv])
+      AC_DEFINE_UNQUOTED([socklen_t], [$gl_cv_socklen_t_equiv],
+	[type to use in place of socklen_t if not defined])],
+     [#include <sys/types.h>
+      #if HAVE_SYS_SOCKET_H
+      # include <sys/socket.h>
+      #elif HAVE_WS2TCPIP_H
+      # include <ws2tcpip.h>
+      #endif])])
diff --git a/m4/sys_socket_h.m4 b/m4/sys_socket_h.m4
new file mode 100644
index 00000000..d3e45b48
--- /dev/null
+++ b/m4/sys_socket_h.m4
@@ -0,0 +1,23 @@
+# sys_socket_h.m4 serial 2
+dnl Copyright (C) 2005, 2006 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.
+
+dnl From Simon Josefsson.
+
+AC_DEFUN([gl_HEADER_SYS_SOCKET],
+[
+  AC_CHECK_HEADERS_ONCE([sys/socket.h])
+  if test $ac_cv_header_sys_socket_h = yes; then
+    SYS_SOCKET_H=''
+  else
+    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([winsock2.h ws2tcpip.h])
+    SYS_SOCKET_H='sys/socket.h'
+  fi
+  AC_SUBST(SYS_SOCKET_H)
+])