56 lines
2.9 KiB
CMake
56 lines
2.9 KiB
CMake
# The ISO C++ File System Technical Specification (ISO-TS, or STD) is optional.
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# http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4100.pdf
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# This is not a workaround, but an user option.
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# The library maybe available in the std library in use or from Boost (almost compatible)
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# http://www.boost.org/doc/libs/1_60_0/libs/filesystem/doc/index.htm
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# or you can choose to use the (partial, but functional) implementation provided by nana.
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# If you include the file <nana/filesystem/filesystem.hpp> or <nana/filesystem/filesystem_ext.hpp>
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# the selected option will be set by nana into std::experimental::filesystem
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# By default Nana will try to use the STD. If STD is not available and NANA_CMAKE_FIND_BOOST_FILESYSTEM
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# is set to ON nana will try to use boost if available. Nana own implementation will be use if none of
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# the previus were selected or available.
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# You can change that default if you change one of the following
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# (please don't define more than one of the _XX_FORCE options):
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option(NANA_CMAKE_NANA_FILESYSTEM_FORCE "Force nana filesystem over ISO and boost?" OFF)
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option(NANA_CMAKE_STD_FILESYSTEM_FORCE "Use of STD filesystem?(a compilation error will ocurre if not available)" OFF)
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option(NANA_CMAKE_BOOST_FILESYSTEM_FORCE "Force use of Boost filesystem if available (over STD)?" OFF)
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option(NANA_CMAKE_FIND_BOOST_FILESYSTEM "Search: Is Boost filesystem available?" OFF)
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if(NANA_CMAKE_NANA_FILESYSTEM_FORCE)
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target_compile_definitions(nana PUBLIC NANA_FILESYSTEM_FORCE)
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elseif(NANA_CMAKE_STD_FILESYSTEM_FORCE)
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target_compile_definitions(nana PUBLIC STD_FILESYSTEM_FORCE)
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target_link_libraries (nana PUBLIC stdc++fs)
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elseif(NANA_CMAKE_BOOST_FILESYSTEM_FORCE)
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target_compile_definitions(nana PUBLIC BOOST_FILESYSTEM_FORCE)
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# https://cmake.org/cmake/help/git-master/module/FindBoost.html
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# Implicit dependencies such as Boost::filesystem requiring Boost::system will be automatically detected and satisfied,
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# even if system is not specified when using find_package and if Boost::system is not added to target_link_libraries.
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# If using Boost::thread, then Thread::Thread will also be added automatically.
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find_package(Boost REQUIRED COMPONENTS filesystem)
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if(Boost_FOUND)
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target_compile_definitions(nana PUBLIC BOOST_FILESYSTEM_AVAILABLE)
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# SYSTEM - ignore warnings from here
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target_include_directories(nana SYSTEM PUBLIC "${Boost_INCLUDE_DIR}") # ?? SYSTEM
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target_link_libraries (nana PUBLIC ${Boost_LIBRARIES})
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# target_include_directories (nana SYSTEM PUBLIC Boost::Boost)
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# message("boost found true")
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endif()
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set(Boost_USE_STATIC_LIBS ON)
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set(Boost_USE_STATIC_RUNTIME ON)
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else()
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# todo test for std (for now just force nana or boost if there no std)
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target_link_libraries (nana PUBLIC stdc++fs)
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# todo if not test for boost
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# if not add nana filesystem
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endif()
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