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141 lines
4.8 KiB
141 lines
4.8 KiB
diff --git a/tree/CMakeLists.txt b/tree/CMakeLists.txt
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index 8f9946c..b9d6e9b 100644
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--- a/tree/CMakeLists.txt
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+++ b/tree/CMakeLists.txt
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@@ -50,70 +50,80 @@ if(APPLE)
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set (CMAKE_FIND_FRAMEWORK LAST)
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endif()
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-# Fetch pybind to be able to use pybind11_add_module symbol.
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-set(PYBIND_VER v2.6.2)
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-include(FetchContent)
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-FetchContent_Declare(
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- pybind11
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- GIT_REPOSITORY https://github.com/pybind/pybind11
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- GIT_TAG ${PYBIND_VER}
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-)
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-if(NOT pybind11_POPULATED)
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- FetchContent_Populate(pybind11)
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- add_subdirectory(${pybind11_SOURCE_DIR} ${pybind11_BINARY_DIR})
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- include_directories(${pybind11_INCLUDE_DIR})
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-endif()
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-
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-# Needed to disable Abseil tests.
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-set (BUILD_TESTING OFF)
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-
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-# Include abseil-cpp.
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-set(ABSEIL_VER 20210324.2)
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-include(ExternalProject)
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-set(ABSEIL_CMAKE_ARGS
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- "-DCMAKE_INSTALL_PREFIX=${CMAKE_SOURCE_DIR}/abseil-cpp"
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- "-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}"
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- "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}"
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- "-DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}"
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- "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}"
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- "-DCMAKE_POSITION_INDEPENDENT_CODE=${CMAKE_POSITION_INDEPENDENT_CODE}"
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- "-DLIBRARY_OUTPUT_PATH=${CMAKE_SOURCE_DIR}/abseil-cpp/lib")
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-if(DEFINED CMAKE_OSX_ARCHITECTURES)
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- set(ABSEIL_CMAKE_ARGS
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- ${ABSEIL_CMAKE_ARGS}
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- "-DCMAKE_OSX_ARCHITECTURES=${CMAKE_OSX_ARCHITECTURES}")
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+find_package(pybind11 CONFIG)
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+
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+if (NOT pybind11_FOUND)
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+ # Fetch pybind to be able to use pybind11_add_module symbol.
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+ set(PYBIND_VER v2.6.2)
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+ include(FetchContent)
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+ FetchContent_Declare(
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+ pybind11
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+ GIT_REPOSITORY https://github.com/pybind/pybind11
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+ GIT_TAG ${PYBIND_VER}
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+ )
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+ if(NOT pybind11_POPULATED)
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+ FetchContent_Populate(pybind11)
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+ add_subdirectory(${pybind11_SOURCE_DIR} ${pybind11_BINARY_DIR})
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+ include_directories(${pybind11_INCLUDE_DIR})
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+ endif()
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endif()
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-ExternalProject_Add(abseil-cpp
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- GIT_REPOSITORY https://github.com/abseil/abseil-cpp.git
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- GIT_TAG ${ABSEIL_VER}
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- PREFIX ${CMAKE_SOURCE_DIR}/abseil-cpp
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- CMAKE_ARGS ${ABSEIL_CMAKE_ARGS}
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-)
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-ExternalProject_Get_Property(abseil-cpp install_dir)
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-set(abseil_install_dir ${install_dir})
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-include_directories (${abseil_install_dir}/include)
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-
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# Define pybind11 tree module.
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pybind11_add_module(_tree tree.h tree.cc)
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-add_dependencies(_tree abseil-cpp)
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-if (WIN32 OR MSVC)
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- set(ABSEIL_LIB_PREF "absl")
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- set(LIB_SUFF "lib")
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+find_package(absl)
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+
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+if (NOT absl_FOUND)
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+ # Needed to disable Abseil tests.
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+ set (BUILD_TESTING OFF)
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+
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+ # Include abseil-cpp.
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+ set(ABSEIL_VER 20210324.2)
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+ include(ExternalProject)
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+ set(ABSEIL_CMAKE_ARGS
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+ "-DCMAKE_INSTALL_PREFIX=${CMAKE_SOURCE_DIR}/abseil-cpp"
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+ "-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}"
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+ "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}"
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+ "-DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}"
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+ "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}"
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+ "-DCMAKE_POSITION_INDEPENDENT_CODE=${CMAKE_POSITION_INDEPENDENT_CODE}"
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+ "-DLIBRARY_OUTPUT_PATH=${CMAKE_SOURCE_DIR}/abseil-cpp/lib")
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+ if(DEFINED CMAKE_OSX_ARCHITECTURES)
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+ set(ABSEIL_CMAKE_ARGS
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+ ${ABSEIL_CMAKE_ARGS}
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+ "-DCMAKE_OSX_ARCHITECTURES=${CMAKE_OSX_ARCHITECTURES}")
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+ endif()
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+ ExternalProject_Add(abseil-cpp
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+ GIT_REPOSITORY https://github.com/abseil/abseil-cpp.git
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+ GIT_TAG ${ABSEIL_VER}
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+ PREFIX ${CMAKE_SOURCE_DIR}/abseil-cpp
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+ CMAKE_ARGS ${ABSEIL_CMAKE_ARGS}
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+ )
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+ ExternalProject_Get_Property(abseil-cpp install_dir)
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+ set(abseil_install_dir ${install_dir})
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+ include_directories (${abseil_install_dir}/include)
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+
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+ add_dependencies(_tree abseil-cpp)
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+
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+ if (WIN32 OR MSVC)
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+ set(ABSEIL_LIB_PREF "absl")
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+ set(LIB_SUFF "lib")
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+ else()
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+ set(ABSEIL_LIB_PREF "libabsl")
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+ set(LIB_SUFF "a")
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+ endif()
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+
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+ # Link abseil static libs.
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+ # We don't use find_library here to force cmake to build abseil before linking.
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+ set(ABSEIL_LIBS int128 raw_hash_set raw_logging_internal strings throw_delegate)
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+ foreach(ABSEIL_LIB IN LISTS ABSEIL_LIBS)
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+ target_link_libraries(_tree PRIVATE
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+ "${abseil_install_dir}/lib/${ABSEIL_LIB_PREF}_${ABSEIL_LIB}.${LIB_SUFF}")
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+ endforeach()
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else()
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- set(ABSEIL_LIB_PREF "libabsl")
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- set(LIB_SUFF "a")
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+ target_link_libraries(_tree PRIVATE absl::int128 absl::raw_hash_set absl::raw_logging_internal absl::strings absl::throw_delegate)
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endif()
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-# Link abseil static libs.
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-# We don't use find_library here to force cmake to build abseil before linking.
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-set(ABSEIL_LIBS int128 raw_hash_set raw_logging_internal strings throw_delegate)
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-foreach(ABSEIL_LIB IN LISTS ABSEIL_LIBS)
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- target_link_libraries(_tree PRIVATE
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- "${abseil_install_dir}/lib/${ABSEIL_LIB_PREF}_${ABSEIL_LIB}.${LIB_SUFF}")
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-endforeach()
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-
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# Make the module private to tree package.
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set_target_properties(_tree PROPERTIES OUTPUT_NAME tree/_tree)
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