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cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
project(yolov8_libtorch_example)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
# -------------- OpenCV --------------
set(OpenCV_DIR "/path/to/opencv/lib/cmake/opencv4")
find_package(OpenCV REQUIRED)
message(STATUS "OpenCV library status:")
message(STATUS " config: ${OpenCV_DIR}")
message(STATUS " version: ${OpenCV_VERSION}")
message(STATUS " libraries: ${OpenCV_LIBS}")
message(STATUS " include path: ${OpenCV_INCLUDE_DIRS}")
include_directories(${OpenCV_INCLUDE_DIRS})
# -------------- libtorch --------------
list(APPEND CMAKE_PREFIX_PATH "/path/to/libtorch")
set(Torch_DIR "/path/to/libtorch/share/cmake/Torch")
find_package(Torch REQUIRED)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${TORCH_CXX_FLAGS}")
message("${TORCH_LIBRARIES}")
message("${TORCH_INCLUDE_DIRS}")
# The following code block is suggested to be used on Windows.
# According to https://github.com/pytorch/pytorch/issues/25457,
# the DLLs need to be copied to avoid memory errors.
# if (MSVC)
# file(GLOB TORCH_DLLS "${TORCH_INSTALL_PREFIX}/lib/*.dll")
# add_custom_command(TARGET yolov8_libtorch_example
# POST_BUILD
# COMMAND ${CMAKE_COMMAND} -E copy_if_different
# ${TORCH_DLLS}
# $<TARGET_FILE_DIR:yolov8_libtorch_example>)
# endif (MSVC)
include_directories(${TORCH_INCLUDE_DIRS})
add_executable(yolov8_libtorch_inference "${CMAKE_CURRENT_SOURCE_DIR}/main.cc")
target_link_libraries(yolov8_libtorch_inference ${TORCH_LIBRARIES} ${OpenCV_LIBS})
set_property(TARGET yolov8_libtorch_inference PROPERTY CXX_STANDARD 17)
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