set(FOLDER_NAME "thirdparty")

# Only show moderate warnings for external library code.
if(IS_MSVC)
    string(REGEX REPLACE "/W[0-4]" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
    string(REGEX REPLACE "/Wall" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
    string(REGEX REPLACE "/W[0-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
    string(REGEX REPLACE "/Wall" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
elseif(IS_GNU OR IS_CLANG)
    string(REGEX REPLACE "-Wall" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
    string(REGEX REPLACE "-Wall" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
endif()

if(IS_MSVC)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W0")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W0")
elseif(IS_GNU OR IS_CLANG)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
endif()

set(CLANG_TIDY_EXE_TEMP ${CLANG_TIDY_EXE})
set(CLANG_TIDY_EXE "")
if(LSD_ENABLED)
    add_subdirectory(LSD)
endif()
add_subdirectory(PoissonRecon)
if(GPU_ENABLED)
    add_subdirectory(SiftGPU)
endif()
add_subdirectory(VLFeat)

if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.28")
    set(_fetch_content_declare_args "SYSTEM" "EXCLUDE_FROM_ALL")
endif()

if(FETCH_POSELIB)
    include(FetchContent)
    FetchContent_Declare(poselib
        URL https://github.com/PoseLib/PoseLib/archive/f119951fca625133112acde48daffa5f20eba451.zip
        URL_HASH SHA256=3faa27d9d1f6ae7cc47602a66c10ac6f64457bc65a959d1880947d3b3bfe1ed1
        ${_fetch_content_declare_args}
    )
    message(STATUS "Configuring PoseLib...")
    set(MARCH_NATIVE OFF CACHE BOOL "")
    FetchContent_MakeAvailable(poselib)
    # Rename PoseLib's benchmark folder to avoid conflict with Google Benchmark's
    # benchmark/benchmark.h header (PoseLib exposes its entire source dir as include path)
    if(EXISTS "${poselib_SOURCE_DIR}/benchmark")
        file(RENAME "${poselib_SOURCE_DIR}/benchmark" "${poselib_SOURCE_DIR}/poselib_benchmark")
    endif()
    message(STATUS "Configuring PoseLib... done")
endif()

if(FETCH_FAISS)
    include(FetchContent)
    FetchContent_Declare(faiss
        URL https://github.com/ahojnnes/faiss/archive/36b77353dc435383e0c23a709e7997a29d049041.zip
        URL_HASH SHA256=aaf90b3dd3e353ff0bc3391581788cda7c510749023d1937707fc99c38ef2587
        ${_fetch_content_declare_args}
    )
    message(STATUS "Configuring faiss...")
    set(FAISS_ENABLE_GPU OFF)
    set(FAISS_ENABLE_PYTHON OFF)
    set(FAISS_ENABLE_MKL OFF)
    set(BUILD_TESTING OFF)
    FetchContent_MakeAvailable(faiss)
    # Fix MSVC linker warning LNK4286: faiss headers use FAISS_API which
    # defaults to dllimport on Windows, but we build faiss as a static library.
    # Adding FAISS_MAIN_LIB as PUBLIC ensures consumers also get this defined.
    if(WIN32 AND TARGET faiss)
        target_compile_definitions(faiss PUBLIC FAISS_MAIN_LIB)
    endif()
    message(STATUS "Configuring faiss... done")
endif()

set(CLANG_TIDY_EXE ${CLANG_TIDY_EXE_TEMP})