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# accept4.m4 serial 3
dnl Copyright (C) 2009-2020 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.
AC_DEFUN([gl_FUNC_ACCEPT4],
[
AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
dnl Persuade glibc <sys/socket.h> to declare accept4().
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
AC_CHECK_DECLS([accept4], , , [[
#include <sys/types.h>
#include <sys/socket.h>
]])
if test $ac_cv_have_decl_accept4 != yes; then
HAVE_ACCEPT4=0
fi
])
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