Cmake: FindCURL with imported target support
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James Turner
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203
CMakeModules/FindCURL.cmake
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203
CMakeModules/FindCURL.cmake
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindCURL
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--------
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Find the native CURL headers and libraries.
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This module accept optional COMPONENTS to check supported features and
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protocols::
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PROTOCOLS: ICT FILE FTP FTPS GOPHER HTTP HTTPS IMAP IMAPS LDAP LDAPS POP3
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POP3S RTMP RTSP SCP SFTP SMB SMBS SMTP SMTPS TELNET TFTP
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FEATURES: SSL IPv6 UnixSockets libz AsynchDNS IDN GSS-API PSL SPNEGO
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Kerberos NTLM NTLM_WB TLS-SRP HTTP2 HTTPS-proxy
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IMPORTED Targets
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^^^^^^^^^^^^^^^^
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This module defines :prop_tgt:`IMPORTED` target ``CURL::libcurl``, if
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curl has been found.
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Result Variables
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^^^^^^^^^^^^^^^^
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This module defines the following variables:
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``CURL_FOUND``
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"True" if ``curl`` found.
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``CURL_INCLUDE_DIRS``
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where to find ``curl``/``curl.h``, etc.
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``CURL_LIBRARIES``
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List of libraries when using ``curl``.
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``CURL_VERSION_STRING``
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The version of ``curl`` found.
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CURL CMake
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^^^^^^^^^^
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If CURL was built using the CMake buildsystem then it provides its own
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``CURLConfig.cmake`` file for use with the :command:`find_package` command's
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config mode. This module looks for this file and, if found,
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returns its results with no further action.
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Set ``CURL_NO_CURL_CMAKE`` to ``ON`` to disable this search.
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#]=======================================================================]
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include(FindPackageHandleStandardArgs)
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if(NOT CURL_NO_CURL_CMAKE)
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# do a find package call to specifically look for the CMake version
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# of curl
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find_package(CURL QUIET NO_MODULE)
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mark_as_advanced(CURL_DIR)
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# if we found the CURL cmake package then we are done, and
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# can print what we found and return.
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if(CURL_FOUND)
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find_package_handle_standard_args(CURL HANDLE_COMPONENTS CONFIG_MODE)
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return()
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endif()
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endif()
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find_package(PkgConfig QUIET)
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if(PKG_CONFIG_FOUND)
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pkg_check_modules(PC_CURL QUIET libcurl)
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if(PC_CURL_FOUND)
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set(CURL_VERSION_STRING ${PC_CURL_VERSION})
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pkg_get_variable(CURL_SUPPORTED_PROTOCOLS libcurl supported_protocols)
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pkg_get_variable(CURL_SUPPORTED_FEATURES libcurl supported_features)
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endif()
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endif()
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# Look for the header file.
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find_path(CURL_INCLUDE_DIR
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NAMES curl/curl.h
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HINTS ${PC_CURL_INCLUDE_DIRS})
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mark_as_advanced(CURL_INCLUDE_DIR)
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if(NOT CURL_LIBRARY)
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# Look for the library (sorted from most current/relevant entry to least).
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find_library(CURL_LIBRARY_RELEASE NAMES
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curl
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# Windows MSVC prebuilts:
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curllib
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libcurl_imp
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curllib_static
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# Windows older "Win32 - MSVC" prebuilts (libcurl.lib, e.g. libcurl-7.15.5-win32-msvc.zip):
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libcurl
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HINTS ${PC_CURL_LIBRARY_DIRS}
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)
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mark_as_advanced(CURL_LIBRARY_RELEASE)
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find_library(CURL_LIBRARY_DEBUG NAMES
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# Windows MSVC CMake builds in debug configuration on vcpkg:
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libcurl-d_imp
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libcurl-d
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HINTS ${PC_CURL_LIBRARY_DIRS}
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)
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mark_as_advanced(CURL_LIBRARY_DEBUG)
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include(SelectLibraryConfigurations)
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select_library_configurations(CURL)
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endif()
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if(CURL_INCLUDE_DIR AND NOT CURL_VERSION_STRING)
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foreach(_curl_version_header curlver.h curl.h)
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if(EXISTS "${CURL_INCLUDE_DIR}/curl/${_curl_version_header}")
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file(STRINGS "${CURL_INCLUDE_DIR}/curl/${_curl_version_header}" curl_version_str REGEX "^#define[\t ]+LIBCURL_VERSION[\t ]+\".*\"")
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string(REGEX REPLACE "^#define[\t ]+LIBCURL_VERSION[\t ]+\"([^\"]*)\".*" "\\1" CURL_VERSION_STRING "${curl_version_str}")
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unset(curl_version_str)
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break()
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endif()
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endforeach()
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endif()
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if(CURL_FIND_COMPONENTS)
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set(CURL_KNOWN_PROTOCOLS ICT FILE FTP FTPS GOPHER HTTP HTTPS IMAP IMAPS LDAP LDAPS POP3 POP3S RTMP RTSP SCP SFTP SMB SMBS SMTP SMTPS TELNET TFTP)
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set(CURL_KNOWN_FEATURES SSL IPv6 UnixSockets libz AsynchDNS IDN GSS-API PSL SPNEGO Kerberos NTLM NTLM_WB TLS-SRP HTTP2 HTTPS-proxy)
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foreach(component IN LISTS CURL_KNOWN_PROTOCOLS CURL_KNOWN_FEATURES)
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set(CURL_${component}_FOUND FALSE)
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endforeach()
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if(NOT PC_CURL_FOUND)
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find_program(CURL_CONFIG_EXECUTABLE NAMES curl-config)
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if(CURL_CONFIG_EXECUTABLE)
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execute_process(COMMAND ${CURL_CONFIG_EXECUTABLE} --version
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OUTPUT_VARIABLE CURL_CONFIG_VERSION_STRING
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND ${CURL_CONFIG_EXECUTABLE} --feature
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OUTPUT_VARIABLE CURL_CONFIG_FEATURES_STRING
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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string(REPLACE "\n" ";" CURL_SUPPORTED_FEATURES "${CURL_CONFIG_FEATURES_STRING}")
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execute_process(COMMAND ${CURL_CONFIG_EXECUTABLE} --protocols
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OUTPUT_VARIABLE CURL_CONFIG_PROTOCOLS_STRING
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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string(REPLACE "\n" ";" CURL_SUPPORTED_PROTOCOLS "${CURL_CONFIG_PROTOCOLS_STRING}")
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endif()
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endif()
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foreach(component IN LISTS CURL_FIND_COMPONENTS)
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list(FIND CURL_KNOWN_PROTOCOLS ${component} _found)
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if(_found)
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list(FIND CURL_SUPPORTED_PROTOCOLS ${component} _found)
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if(_found)
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set(CURL_${component}_FOUND TRUE)
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elseif(CURL_FIND_REQUIRED)
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message(FATAL_ERROR "CURL: Required protocol ${component} is not found")
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endif()
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else()
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list(FIND CURL_SUPPORTED_FEATURES ${component} _found)
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if(_found)
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set(CURL_${component}_FOUND TRUE)
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elseif(CURL_FIND_REQUIRED)
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message(FATAL_ERROR "CURL: Required feature ${component} is not found")
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endif()
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endif()
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endforeach()
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endif()
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find_package_handle_standard_args(CURL
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REQUIRED_VARS CURL_LIBRARY CURL_INCLUDE_DIR
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VERSION_VAR CURL_VERSION_STRING
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HANDLE_COMPONENTS)
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if(CURL_FOUND)
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set(CURL_LIBRARIES ${CURL_LIBRARY})
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set(CURL_INCLUDE_DIRS ${CURL_INCLUDE_DIR})
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if(NOT TARGET CURL::libcurl)
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add_library(CURL::libcurl UNKNOWN IMPORTED)
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set_target_properties(CURL::libcurl PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${CURL_INCLUDE_DIRS}")
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if(EXISTS "${CURL_LIBRARY}")
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set_target_properties(CURL::libcurl PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION "${CURL_LIBRARY}")
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endif()
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if(CURL_LIBRARY_RELEASE)
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set_property(TARGET CURL::libcurl APPEND PROPERTY
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IMPORTED_CONFIGURATIONS RELEASE)
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set_target_properties(CURL::libcurl PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION_RELEASE "${CURL_LIBRARY_RELEASE}")
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endif()
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if(CURL_LIBRARY_DEBUG)
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set_property(TARGET CURL::libcurl APPEND PROPERTY
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IMPORTED_CONFIGURATIONS DEBUG)
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set_target_properties(CURL::libcurl PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION_DEBUG "${CURL_LIBRARY_DEBUG}")
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endif()
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endif()
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endif()
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