98 lines
3.0 KiB
CMake
98 lines
3.0 KiB
CMake
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#.rst:
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# CGAL_SetupBoost
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# ---------------
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#
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# The module searchs for the `Boost` headers and library, by calling
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#
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# .. code-block:: cmake
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#
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# find_package(Boost)
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#
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# and defines the function :command:`use_CGAL_Boost_support`.
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if ( CGAL_Boost_Setup )
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return()
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endif()
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set ( CGAL_Boost_Setup TRUE )
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include(${CMAKE_CURRENT_LIST_DIR}/CGAL_TweakFindBoost.cmake)
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function(CGAL_detect_if_Boost_Thread_is_required)
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get_property(PROPERTY_CGAL_requires_Boost_Thread_IS_SET
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GLOBAL PROPERTY CGAL_requires_Boost_Thread SET)
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if(PROPERTY_CGAL_requires_Boost_Thread_IS_SET)
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get_property(CGAL_requires_Boost_libs
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GLOBAL PROPERTY CGAL_requires_Boost_Thread)
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else()
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set ( CGAL_requires_Boost_libs TRUE )
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if ( DEFINED MSVC_VERSION AND "${MSVC_VERSION}" GREATER 1800)
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set ( CGAL_requires_Boost_libs FALSE )
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else()
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try_run( CGAL_test_cpp_version_RUN_RES CGAL_test_cpp_version_COMPILE_RES
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"${CMAKE_BINARY_DIR}"
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"${CGAL_MODULES_DIR}/config/support/CGAL_test_cpp_version.cpp"
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RUN_OUTPUT_VARIABLE CGAL_cplusplus)
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message(STATUS "__cplusplus is ${CGAL_cplusplus}")
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if(NOT CGAL_test_cpp_version_RUN_RES)
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set ( CGAL_requires_Boost_libs FALSE )
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message(STATUS " --> Do not link with Boost.Thread")
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endif()
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endif()
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endif()
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set_property(GLOBAL PROPERTY CGAL_requires_Boost_Thread ${CGAL_requires_Boost_libs})
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set(CGAL_requires_Boost_libs ${CGAL_requires_Boost_libs} PARENT_SCOPE)
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endfunction(CGAL_detect_if_Boost_Thread_is_required)
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CGAL_detect_if_Boost_Thread_is_required()
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if (CGAL_requires_Boost_libs)
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find_package( Boost 1.48 REQUIRED thread system )
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else()
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find_package( Boost 1.48 REQUIRED )
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endif()
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if(Boost_FOUND)
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if(DEFINED Boost_DIR AND NOT Boost_DIR)
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# Unset that cache variable that is set in the cache by FindBoost
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# (while it was searching for boost-cmake).
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unset(Boost_DIR CACHE)
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set(Boost_NO_BOOST_CMAKE TRUE CACHE INTERNAL "Avoid future search of boost-cmake")
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endif()
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endif()
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message( STATUS "Boost include dirs: ${Boost_INCLUDE_DIRS}" )
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message( STATUS "Boost libraries: ${Boost_LIBRARIES}" )
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set ( CGAL_USE_BOOST 1 )
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#.rst:
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# Provided Functions
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# ^^^^^^^^^^^^^^^^^^
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#
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# .. command:: use_CGAL_Boost_support
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#
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# Link the target with the `Boost` libraries::
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#
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# use_CGAL_Boost_support( target [INTERFACE] )
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#
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# If the option ``INTERFACE`` is passed, the dependencies are
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# added using :command:`target_link_libraries` with the ``INTERFACE``
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# keyword, or ``PUBLIC`` otherwise.
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function(use_CGAL_Boost_support target)
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if(ARGV1 STREQUAL INTERFACE)
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set(keyword INTERFACE)
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else()
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set(keyword PUBLIC)
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endif()
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if(NOT Boost_FOUND)
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message(FATAL_ERROR "use_CGAL_Boost_support is use whereas Boost_FOUND is false.")
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return()
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endif()
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if(NOT CGAL_Boost_USE_STATIC_LIBS AND CGAL_AUTO_LINK_ENABLED)
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target_compile_definitions(${target} ${keyword} BOOST_ALL_DYN_LINK=1)
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endif()
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target_include_directories(${target} SYSTEM ${keyword} ${Boost_INCLUDE_DIRS})
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target_link_libraries(${target} ${keyword} ${Boost_LIBRARIES})
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endfunction()
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