1 dnl * 2 dnl * Copyright (c) 2001 Motoyuki Kasahara 3 dnl * 4 dnl * Redistribution and use in source and binary forms, with or without 5 dnl * modification, are permitted provided that the following conditions 6 dnl * are met: 7 dnl * 1. Redistributions of source code must retain the above copyright 8 dnl * notice, this list of conditions and the following disclaimer. 9 dnl * 2. Redistributions in binary form must reproduce the above copyright 10 dnl * notice, this list of conditions and the following disclaimer in the 11 dnl * documentation and/or other materials provided with the distribution. 12 dnl * 3. Neither the name of the project nor the names of its contributors 13 dnl * may be used to endorse or promote products derived from this software 14 dnl * without specific prior written permission. 15 dnl * 16 dnl * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 17 dnl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 dnl * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 dnl * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORSBE 20 dnl * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 dnl * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 dnl * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 dnl * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 dnl * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 dnl * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 dnl * THE POSSIBILITY OF SUCH DAMAGE. 27 dnl * 28 29 dnl * 30 dnl * Check for h_errno. 31 dnl * 32 AC_DEFUN([AC_DECL_H_ERRNO], 33 [AC_CACHE_CHECK(for h_errno declaration in netdb.h, ac_cv_decl_h_errno, 34 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 35 #include <netdb.h>]], [[ 36 h_errno = 0; 37 ]])],[ac_cv_decl_h_errno=yes],[ac_cv_decl_h_errno=no])]) 38 if test "$ac_cv_decl_h_errno" = yes; then 39 AC_DEFINE(H_ERRNO_DECLARED, 1, 40 [Define to 1 if `h_errno' is declared by <netdb.h>]) 41 fi]) 42
