colmap/lib/CMakeLists.txt

set(FOLDER_NAME "lib")

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

add_subdirectory(FLANN)
add_subdirectory(LSD)
add_subdirectory(PBA)
add_subdirectory(PoissonRecon)
add_subdirectory(SiftGPU)
add_subdirectory(SQLite)
add_subdirectory(VLFeat)