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