74 lines
3.0 KiB
CMake
74 lines
3.0 KiB
CMake
if(NOT TARGET clipper) # If there is a clipper target in the parent project we are good to go.
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find_package(Clipper 6.1)
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if(NOT CLIPPER_FOUND)
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find_package(Subversion QUIET)
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if(Subversion_FOUND)
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set(URL_CLIPPER "https://svn.code.sf.net/p/polyclipping/code/trunk/cpp"
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CACHE STRING "Clipper source code repository location.")
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message(STATUS "Clipper not found so it will be downloaded.")
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# Silently download and build the library in the build dir
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if (CMAKE_VERSION VERSION_LESS 3.2)
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set(UPDATE_DISCONNECTED_IF_AVAILABLE "")
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else()
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set(UPDATE_DISCONNECTED_IF_AVAILABLE "UPDATE_DISCONNECTED 1")
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endif()
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include(DownloadProject)
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download_project( PROJ clipper_library
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SVN_REPOSITORY ${URL_CLIPPER}
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SVN_REVISION -r540
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#SOURCE_SUBDIR cpp
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INSTALL_COMMAND ""
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CONFIGURE_COMMAND "" # Not working, I will just add the source files
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${UPDATE_DISCONNECTED_IF_AVAILABLE}
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)
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# This is not working and I dont have time to fix it
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# add_subdirectory(${clipper_library_SOURCE_DIR}/cpp
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# ${clipper_library_BINARY_DIR}
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# )
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add_library(clipperBackend STATIC
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${clipper_library_SOURCE_DIR}/clipper.cpp
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${clipper_library_SOURCE_DIR}/clipper.hpp)
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target_include_directories(clipperBackend INTERFACE ${clipper_library_SOURCE_DIR})
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else()
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message(FATAL_ERROR "Can't find clipper library and no SVN client found to download.
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You can download the clipper sources and define a clipper target in your project, that will work for libnest2d.")
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endif()
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else()
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add_library(clipperBackend INTERFACE)
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target_link_libraries(clipperBackend INTERFACE Clipper::Clipper)
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endif()
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else()
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# set(CLIPPER_INCLUDE_DIRS "" PARENT_SCOPE)
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# set(CLIPPER_LIBRARIES clipper PARENT_SCOPE)
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add_library(clipperBackend INTERFACE)
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target_link_libraries(clipperBackend INTERFACE clipper)
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endif()
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# Clipper backend is not enough on its own, it still needs some functions
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# from Boost geometry
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if(NOT Boost_FOUND)
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find_package(Boost 1.58 REQUIRED)
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# TODO automatic download of boost geometry headers
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endif()
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target_link_libraries(clipperBackend INTERFACE Boost::boost )
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#target_sources(ClipperBackend INTERFACE
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# ${CMAKE_CURRENT_SOURCE_DIR}/geometries.hpp
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# ${CMAKE_CURRENT_SOURCE_DIR}/clipper_polygon.hpp
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# ${SRC_DIR}/libnest2d/utils/boost_alg.hpp )
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target_compile_definitions(clipperBackend INTERFACE LIBNEST2D_BACKEND_CLIPPER)
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# And finally plug the clipperBackend into libnest2d
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# target_link_libraries(libnest2d INTERFACE clipperBackend)
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