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dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
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dnl Copyright (C) 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_CHECK_TYPE([socklen_t], ,
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[AC_MSG_CHECKING([for socklen_t equivalent])
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AC_CACHE_VAL([gl_cv_socklen_t_equiv],
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[# Systems have either "struct sockaddr *" or
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# "void *" as the second argument to getpeername
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gl_cv_socklen_t_equiv=
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for arg2 in "struct sockaddr" void; do
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for t in int size_t "unsigned int" "long int" "unsigned long int"; do
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[#include <sys/types.h>
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#include <sys/socket.h>
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[# Systems have either "struct sockaddr *" or
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# "void *" as the second argument to getpeername
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gl_cv_socklen_t_equiv=
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for arg2 in "struct sockaddr" void; do
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for t in int size_t "unsigned int" "long int" "unsigned long int"; do
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
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[[#include <sys/types.h>
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#include <sys/socket.h>
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int getpeername (int, $arg2 *, $t *);],
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getpeername (0, 0, &len);],
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[gl_cv_socklen_t_equiv="$t"])
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test "$gl_cv_socklen_t_equiv" != "" && break
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test "$gl_cv_socklen_t_equiv" != "" && break
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int getpeername (int, $arg2 *, $t *);]],
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getpeername (0, 0, &len);]])],
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[gl_cv_socklen_t_equiv="$t"])
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test "$gl_cv_socklen_t_equiv" != "" && break
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test "$gl_cv_socklen_t_equiv" != "" && break
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if test "$gl_cv_socklen_t_equiv" = ""; then
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AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
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AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
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AC_MSG_RESULT([$gl_cv_socklen_t_equiv])
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AC_DEFINE_UNQUOTED([socklen_t], [$gl_cv_socklen_t_equiv],
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[type to use in place of socklen_t if not defined])],
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[type to use in place of socklen_t if not defined])],
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[#include <sys/types.h>
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#if HAVE_SYS_SOCKET_H
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# include <sys/socket.h>