98 lines
3.6 KiB
CMake
98 lines
3.6 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 c-ares library
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#
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# Input variables:
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#
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# - `CARES_INCLUDE_DIR`: The c-ares include directory.
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# - `CARES_LIBRARY`: Path to `cares` library.
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#
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# Result variables:
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#
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# - `CARES_FOUND`: System has c-ares.
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# - `CARES_INCLUDE_DIRS`: The c-ares include directories.
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# - `CARES_LIBRARIES`: The c-ares library names.
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# - `CARES_LIBRARY_DIRS`: The c-ares library directories.
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# - `CARES_PC_REQUIRES`: The c-ares pkg-config packages.
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# - `CARES_CFLAGS`: Required compiler flags.
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# - `CARES_VERSION`: Version of c-ares.
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set(CARES_PC_REQUIRES "libcares")
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if(CURL_USE_PKGCONFIG AND
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NOT DEFINED CARES_INCLUDE_DIR AND
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NOT DEFINED CARES_LIBRARY)
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find_package(PkgConfig QUIET)
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pkg_check_modules(CARES ${CARES_PC_REQUIRES})
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endif()
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if(CARES_FOUND)
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set(Cares_FOUND TRUE)
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string(REPLACE ";" " " CARES_CFLAGS "${CARES_CFLAGS}")
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message(STATUS "Found Cares (via pkg-config): ${CARES_INCLUDE_DIRS} (found version \"${CARES_VERSION}\")")
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else()
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find_path(CARES_INCLUDE_DIR NAMES "ares.h")
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find_library(CARES_LIBRARY NAMES ${CARES_NAMES} "cares")
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unset(CARES_VERSION CACHE)
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if(CARES_INCLUDE_DIR AND EXISTS "${CARES_INCLUDE_DIR}/ares_version.h")
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set(_version_regex1 "#[\t ]*define[\t ]+ARES_VERSION_MAJOR[\t ]+([0-9]+).*")
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set(_version_regex2 "#[\t ]*define[\t ]+ARES_VERSION_MINOR[\t ]+([0-9]+).*")
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set(_version_regex3 "#[\t ]*define[\t ]+ARES_VERSION_PATCH[\t ]+([0-9]+).*")
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file(STRINGS "${CARES_INCLUDE_DIR}/ares_version.h" _version_str1 REGEX "${_version_regex1}")
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file(STRINGS "${CARES_INCLUDE_DIR}/ares_version.h" _version_str2 REGEX "${_version_regex2}")
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file(STRINGS "${CARES_INCLUDE_DIR}/ares_version.h" _version_str3 REGEX "${_version_regex3}")
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string(REGEX REPLACE "${_version_regex1}" "\\1" _version_str1 "${_version_str1}")
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string(REGEX REPLACE "${_version_regex2}" "\\1" _version_str2 "${_version_str2}")
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string(REGEX REPLACE "${_version_regex3}" "\\1" _version_str3 "${_version_str3}")
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set(CARES_VERSION "${_version_str1}.${_version_str2}.${_version_str3}")
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unset(_version_regex1)
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unset(_version_regex2)
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unset(_version_regex3)
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unset(_version_str1)
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unset(_version_str2)
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unset(_version_str3)
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Cares
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REQUIRED_VARS
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CARES_INCLUDE_DIR
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CARES_LIBRARY
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VERSION_VAR
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CARES_VERSION
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)
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if(CARES_FOUND)
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set(CARES_INCLUDE_DIRS ${CARES_INCLUDE_DIR})
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set(CARES_LIBRARIES ${CARES_LIBRARY})
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endif()
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mark_as_advanced(CARES_INCLUDE_DIR CARES_LIBRARY)
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endif()
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if(CARES_FOUND AND WIN32)
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list(APPEND CARES_LIBRARIES "iphlpapi") # for if_indextoname and others
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endif()
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