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45d2ff6f85
Fixes errors on second `find_package(CURL)`. This is a frequent case with transitive dependencies: ``` CMake Error at ...: add_library cannot create ALIAS target "CURL::libcurl" because another target with the same name already exists. ``` Test to reproduce: ```cmake cmake_minimum_required(VERSION 3.27) # must be 3.18 or higher project(curl) set(CURL_DIR "example/lib/cmake/CURL/") find_package(CURL CONFIG REQUIRED) find_package(CURL CONFIG REQUIRED) # fails add_executable(main main.c) target_link_libraries(main CURL::libcurl) ``` Ref: https://cmake.org/cmake/help/latest/release/3.18.html#other-changes Ref: https://cmake.org/cmake/help/v3.18/policy/CMP0107.html Ref: #12300 Assisted-by: Harry Mallon Closes #11913
41 lines
1.5 KiB
CMake
41 lines
1.5 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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@PACKAGE_INIT@
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include(CMakeFindDependencyMacro)
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if(@USE_OPENSSL@)
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find_dependency(OpenSSL @OPENSSL_VERSION_MAJOR@)
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endif()
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if(@USE_ZLIB@)
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find_dependency(ZLIB @ZLIB_VERSION_MAJOR@)
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endif()
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include("${CMAKE_CURRENT_LIST_DIR}/@TARGETS_EXPORT_NAME@.cmake")
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check_required_components("@PROJECT_NAME@")
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# Alias for either shared or static library
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if(NOT TARGET @PROJECT_NAME@::libcurl)
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add_library(@PROJECT_NAME@::libcurl ALIAS @PROJECT_NAME@::@LIB_SELECTED@)
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endif()
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