432f2fd9ac
- use the same pattern across all Find modules:
- verify if the version header exists before reading it.
- use a single regex per lookup.
- sync regexes between Find modules.
- use generic temporary variable names.
- improve readability.
- make it simpler to transition to new CMake syntax in the future:
```cmake
file(STRINGS "${CARES_INCLUDE_DIR}/ares_version.h" _version_str REGEX "<...>")
unset(_version_str)
set(CARES_VERSION "${CMAKE_MATCH_1}")
```
Ref: https://cmake.org/cmake/help/latest/policy/CMP0159.html#policy:CMP0159
- fix zstd version detection to be CMake 3.7 compatible.
Required 3.9 before this patch, for the `CMAKE_MATCH_<n>` feature.
Follow-up to c5d506e9bb #12200
Follow-up to 4e2f3641f8 #14548
Closes #14572
76 lines
2.4 KiB
CMake
76 lines
2.4 KiB
CMake
#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at https://curl.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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# SPDX-License-Identifier: curl
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#
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###########################################################################
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# Find the libssh2 library
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#
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# Result Variables:
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#
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# LIBSSH2_FOUND System has libssh2
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# LIBSSH2_INCLUDE_DIRS The libssh2 include directories
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# LIBSSH2_LIBRARIES The libssh2 library names
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# LIBSSH2_VERSION Version of libssh2
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if(CURL_USE_PKGCONFIG)
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find_package(PkgConfig QUIET)
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pkg_check_modules(PC_LIBSSH2 "libssh2")
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endif()
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find_path(LIBSSH2_INCLUDE_DIR "libssh2.h"
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HINTS
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${PC_LIBSSH2_INCLUDEDIR}
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${PC_LIBSSH2_INCLUDE_DIRS}
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)
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find_library(LIBSSH2_LIBRARY NAMES "ssh2" "libssh2"
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HINTS
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${PC_LIBSSH2_LIBDIR}
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${PC_LIBSSH2_LIBRARY_DIRS}
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)
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if(PC_LIBSSH2_VERSION)
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set(LIBSSH2_VERSION ${PC_LIBSSH2_VERSION})
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elseif(LIBSSH2_INCLUDE_DIR AND EXISTS "${LIBSSH2_INCLUDE_DIR}/libssh2.h")
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set(_version_regex "#[\t ]*define[\t ]+LIBSSH2_VERSION[\t ]+\"([^\"]*)\"")
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file(STRINGS "${LIBSSH2_INCLUDE_DIR}/libssh2.h" _version_str REGEX "${_version_regex}")
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string(REGEX REPLACE "${_version_regex}" "\\1" _version_str "${_version_str}")
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set(LIBSSH2_VERSION "${_version_str}")
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unset(_version_regex)
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unset(_version_str)
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(LibSSH2
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REQUIRED_VARS
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LIBSSH2_INCLUDE_DIR
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LIBSSH2_LIBRARY
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VERSION_VAR
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LIBSSH2_VERSION
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)
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if(LIBSSH2_FOUND)
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set(LIBSSH2_INCLUDE_DIRS ${LIBSSH2_INCLUDE_DIR})
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set(LIBSSH2_LIBRARIES ${LIBSSH2_LIBRARY})
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endif()
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mark_as_advanced(LIBSSH2_INCLUDE_DIR LIBSSH2_LIBRARY)
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