74 lines
2.4 KiB
CMake
74 lines
2.4 KiB
CMake
#.rst:
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# CMakeFindDependencyMacro
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# -------------------------
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#
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# ::
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#
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# find_dependency(<dep> [<version>])
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#
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#
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# ``find_dependency()`` wraps a :command:`find_package` call for a package
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# dependency. It is designed to be used in a <package>Config.cmake file, and it
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# forwards the correct parameters for EXACT, QUIET and REQUIRED which were
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# passed to the original :command:`find_package` call. It also sets an
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# informative diagnostic message if the dependency could not be found.
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#
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#=============================================================================
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# Copyright 2013 Stephen Kelly <steveire@gmail.com>
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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macro(find_dependency dep)
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if (NOT ${dep}_FOUND)
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set(cmake_fd_version)
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if (${ARGC} GREATER 1)
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set(cmake_fd_version ${ARGV1})
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endif()
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set(cmake_fd_exact_arg)
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if(${CMAKE_FIND_PACKAGE_NAME}_FIND_VERSION_EXACT)
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set(cmake_fd_exact_arg EXACT)
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endif()
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set(cmake_fd_quiet_arg)
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if(${CMAKE_FIND_PACKAGE_NAME}_FIND_QUIETLY)
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set(cmake_fd_quiet_arg QUIET)
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endif()
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set(cmake_fd_required_arg)
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if(${CMAKE_FIND_PACKAGE_NAME}_FIND_REQUIRED)
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set(cmake_fd_required_arg REQUIRED)
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endif()
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get_property(cmake_fd_alreadyTransitive GLOBAL PROPERTY
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_CMAKE_${dep}_TRANSITIVE_DEPENDENCY
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)
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find_package(${dep} ${cmake_fd_version}
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${cmake_fd_exact_arg}
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${cmake_fd_quiet_arg}
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${cmake_fd_required_arg}
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)
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if(NOT DEFINED cmake_fd_alreadyTransitive OR cmake_fd_alreadyTransitive)
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set_property(GLOBAL PROPERTY _CMAKE_${dep}_TRANSITIVE_DEPENDENCY TRUE)
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endif()
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if (NOT ${dep}_FOUND)
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set(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE "${CMAKE_FIND_PACKAGE_NAME} could not be found because dependency ${dep} could not be found.")
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set(${CMAKE_FIND_PACKAGE_NAME}_FOUND False)
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return()
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endif()
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set(cmake_fd_version)
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set(cmake_fd_required_arg)
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set(cmake_fd_quiet_arg)
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set(cmake_fd_exact_arg)
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endif()
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endmacro()
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