| #*************************************************************************** | 
 | #                                  _   _ ____  _ | 
 | #  Project                     ___| | | |  _ \| | | 
 | #                             / __| | | | |_) | | | 
 | #                            | (__| |_| |  _ <| |___ | 
 | #                             \___|\___/|_| \_\_____| | 
 | # | 
 | # Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al. | 
 | # | 
 | # This software is licensed as described in the file COPYING, which | 
 | # you should have received as part of this distribution. The terms | 
 | # are also available at https://curl.se/docs/copyright.html. | 
 | # | 
 | # You may opt to use, copy, modify, merge, publish, distribute and/or sell | 
 | # copies of the Software, and permit persons to whom the Software is | 
 | # furnished to do so, under the terms of the COPYING file. | 
 | # | 
 | # This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | 
 | # KIND, either express or implied. | 
 | # | 
 | # SPDX-License-Identifier: curl | 
 | # | 
 | #*************************************************************************** | 
 |  | 
 | AC_DEFUN([CURL_WITH_SCHANNEL], [ | 
 | AC_MSG_CHECKING([whether to enable Windows native SSL/TLS]) | 
 | if test "x$OPT_SCHANNEL" != xno; then | 
 |   ssl_msg= | 
 |   if test "x$OPT_SCHANNEL" != "xno"  && | 
 |      test "x$curl_cv_native_windows" = "xyes"; then | 
 |     AC_MSG_RESULT(yes) | 
 |     AC_DEFINE(USE_SCHANNEL, 1, [to enable Windows native SSL/TLS support]) | 
 |     AC_SUBST(USE_SCHANNEL, [1]) | 
 |     ssl_msg="Schannel" | 
 |     test schannel != "$DEFAULT_SSL_BACKEND" || VALID_DEFAULT_SSL_BACKEND=yes | 
 |     SCHANNEL_ENABLED=1 | 
 |     # --with-schannel implies --enable-sspi | 
 |     AC_DEFINE(USE_WINDOWS_SSPI, 1, [to enable SSPI support]) | 
 |     AC_SUBST(USE_WINDOWS_SSPI, [1]) | 
 |     curl_sspi_msg="enabled" | 
 |   else | 
 |     AC_MSG_RESULT(no) | 
 |   fi | 
 |   test -z "$ssl_msg" || ssl_backends="${ssl_backends:+$ssl_backends, }$ssl_msg" | 
 | else | 
 |   AC_MSG_RESULT(no) | 
 | fi | 
 | ]) |