-# socklen.m4 serial 5
-dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
+# socklen.m4 serial 7
+dnl Copyright (C) 2005, 2006, 2007, 2009, 2010 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 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 it there first. That file is included by gnulib's sys_socket.in.h, which
dnl all users of this module should include. Cygwin must not include
dnl ws2tcpip.h.
AC_DEFUN([gl_TYPE_SOCKLEN_T],
AC_CHECK_TYPE([socklen_t], ,
[AC_MSG_CHECKING([for socklen_t equivalent])
AC_CACHE_VAL([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>
+ [# 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_COMPILE_IFELSE([AC_LANG_PROGRAM(
+ [[#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
+ 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])
+ 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])],
+ [type to use in place of socklen_t if not defined])],
[#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
# include <sys/socket.h>