Files
curl/m4/curl-schannel.m4
Viktor Szakats 8db0e286b3 autotools: tidy-up if expressions
- drop x-hacks for curl internal variables and certain autotools ones
  that do not hold custom values.
- make x-hacks consistently use `"x$var" = "xval"` style.
- add a few x-hacks for input/external variables that may hold custom
  values.
- prefer `-z` and `-n` to test empty/non-empty.
  This also makes some x-hacks unnecessary.
- optimized negated test `-z` and `-n` options.
- prefer `&&` and `||` over `-a` and `-o`.
  For better POSIX compatibility:
  https://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html
- quote variables passed to `test`, where missing.
- quote string literals in comparisons.
- fix some indentation, whitespace.

Note that a few `case` statements also use the x-hack, which looks
unnecessary. This patch does not change them.

Verified by comparing feature detection results with a reference CI run
from before this patch (PR #19922).

Refs:
https://www.shellcheck.net/wiki/SC2268
https://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html
https://www.vidarholen.net/contents/blog/?p=1035
https://mywiki.wooledge.org/BashPitfalls#A.5B_.24foo_.3D_.22bar.22_.5D

Closes #18189
2025-12-10 22:29:19 +01:00

51 lines
1.8 KiB
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#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) 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 "$curl_cv_native_windows" = "yes"; then
if test "$curl_cv_winuwp" = "yes"; then
AC_MSG_ERROR([UWP does not support Schannel.])
fi
AC_MSG_RESULT(yes)
AC_DEFINE(USE_SCHANNEL, 1, [to enable Windows native SSL/TLS support])
ssl_msg="Schannel"
test "schannel" != "$DEFAULT_SSL_BACKEND" || VALID_DEFAULT_SSL_BACKEND=yes
SCHANNEL_ENABLED=1
# --with-schannel implies --enable-sspi
AC_DEFINE(USE_WINDOWS_SSPI, 1, [to enable SSPI support])
USE_WINDOWS_SSPI=1
curl_sspi_msg="enabled"
else
AC_MSG_RESULT(no)
fi
test -z "$ssl_msg" || ssl_backends="${ssl_backends:+$ssl_backends, }$ssl_msg"
else
AC_MSG_RESULT(no)
fi
])