curl/CMake/FindWolfSSH.cmake
Viktor Szakats aafc074f87
cmake: clear package version after pkg-config detection
`pkg_check_modules()` seems to leave `<PACKAGE>_VERSION` defined with an
empty value, if the package is not found.

When the package is also not found in the fallback branch,
`find_package_handle_standard_args()` logs and error message. In this
message it includes the bogus empty value as: `(found version "")`:
```
Could NOT find Libssh2 (missing: LIBSSH2_INCLUDE_DIR LIBSSH2_LIBRARY) (found version "")
```
https://github.com/curl/curl/actions/runs/11509727553/job/32040378958?pr=15408#step:31:99

Clear the version number to avoid the confusion:
```
Could NOT find Libssh2 (missing: LIBSSH2_INCLUDE_DIR LIBSSH2_LIBRARY)
```
https://github.com/curl/curl/actions/runs/11510022503/job/32041149129?pr=15408#step:31:99

Seen with CMake v3.30.5.

Follow-up to 7bab201abe #15193
Closes #15409
2024-10-25 15:04:35 +02:00

66 lines
2.3 KiB
CMake

#***************************************************************************
# _ _ ____ _
# 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
#
###########################################################################
# Find the wolfSSH library
#
# Input variables:
#
# - `WOLFSSH_INCLUDE_DIR`: The wolfSSH include directory.
# - `WOLFSSH_LIBRARY`: Path to `wolfssh` library.
#
# Result variables:
#
# - `WOLFSSH_FOUND`: System has wolfSSH.
# - `WOLFSSH_INCLUDE_DIRS`: The wolfSSH include directories.
# - `WOLFSSH_LIBRARIES`: The wolfSSH library names.
# - `WOLFSSH_VERSION`: Version of wolfSSH.
find_path(WOLFSSH_INCLUDE_DIR NAMES "wolfssh/ssh.h")
find_library(WOLFSSH_LIBRARY NAMES "wolfssh" "libwolfssh")
unset(WOLFSSH_VERSION CACHE)
if(WOLFSSH_INCLUDE_DIR AND EXISTS "${WOLFSSH_INCLUDE_DIR}/wolfssh/version.h")
set(_version_regex "#[\t ]*define[\t ]+LIBWOLFSSH_VERSION_STRING[\t ]+\"([^\"]*)\"")
file(STRINGS "${WOLFSSH_INCLUDE_DIR}/wolfssh/version.h" _version_str REGEX "${_version_regex}")
string(REGEX REPLACE "${_version_regex}" "\\1" _version_str "${_version_str}")
set(WOLFSSH_VERSION "${_version_str}")
unset(_version_regex)
unset(_version_str)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(WolfSSH
REQUIRED_VARS
WOLFSSH_INCLUDE_DIR
WOLFSSH_LIBRARY
VERSION_VAR
WOLFSSH_VERSION
)
if(WOLFSSH_FOUND)
set(WOLFSSH_INCLUDE_DIRS ${WOLFSSH_INCLUDE_DIR})
set(WOLFSSH_LIBRARIES ${WOLFSSH_LIBRARY})
endif()
mark_as_advanced(WOLFSSH_INCLUDE_DIR WOLFSSH_LIBRARY)