CMakeLists compiles with src_files as a library

            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}

            RESULT_VARIABLE GIT_SUBMOD_RESULT)

        if(NOT GIT_SUBMOD_RESULT EQUAL "0")

            message(FATAL_ERROR "git submodule update --init --recursive failed with ${GIT_SUBMOD_RESULT}, please checkout submodules")

            message(

                FATAL_ERROR

                "git submodule update --init --recursive failed with ${GIT_SUBMOD_RESULT}, please checkout submodules")

        endif()

    endif()

endif()

if(NOT EXISTS "${PROJECT_SOURCE_DIR}/external/cuda-samples/README.md")

    message(FATAL_ERROR "The submodule cuda-samples was not downloaded! GIT_SUBMODULE was turned off or failed. Please update submodules and try again.")

# Check submodules

foreach(SUBMOD IN LISTS "cuda-samples")

    if(NOT EXISTS "${PROJECT_SOURCE_DIR}/external/${SUBMOD}/README.md")

        message(

            FATAL_ERROR 

            "The submodule ${SUBMOD} was not found, check git submodules.")

    endif()

endforeach()

include(CTest)

# set(CMAKE_CUDA_FLAGS "-gencode arch=compute_75,code=sm_75")

# create the executable

add_executable(${PROJECT_NAME}

    src/test_tp.cu

# create the source files as a lib

add_library(src_files STATIC

    src/dtt8x8.cu

    src/dtt8x8.h

    src/geometry_correction.cu

    src/geometry_correction.h

    src/test_tp.cu

    src/TileProcessor.cuh

    src/TileProcessor.h

    src/tp_defines.h)

include_directories(external/cuda-samples/Common)

set_target_properties(${PROJECT_NAME}

    PROPERTIES CUDA_SEPARABLE_COMPILATION ON)

# target_compile_features(src_files PUBLIC cxx_std_11)

set_target_properties(src_files PROPERTIES CUDA_SEPARABLE_COMPILATION ON)

# make tests executable

add_executable(${PROJECT_NAME} src/test_tp.cu)

include_directories(external/cuda-samples/Common)

set_property(TARGET ${PROJECT_NAME} PROPERTY CUDA_SEPARABLE_COMPILATION ON)

target_link_libraries(${PROJECT_NAME} PRIVATE src_files)