if(TARGET TIFF::TIFF)    set(TIFF_FOUND TRUE)    return()endif() find_package(PkgConfig QUIET) if(PkgConfig_FOUND)    pkg_check_modules(TIFF IMPORTED_TARGET libtiff-4)     if(TARGET PkgConfig::TIFF)        add_library(TIFF::TIFF INTERFACE IMPORTED)        target_link_libraries(TIFF::TIFF INTERFACE PkgConfig::TIFF)        set(TIFF_FOUND TRUE)    endif()endif() if(NOT TARGET TIFF::TIFF)    find_library(TIFF_LIBRARY NAMES tiff-4)    find_path(TIFF_INCLUDE_DIR tiff.h)     if(TIFF_LIBRARY AND TIFF_INCLUDE_DIR)        add_library(TIFF::TIFF UNKNOWN IMPORTED)        set_target_properties(TIFF::TIFF PROPERTIES            IMPORTED_LOCATION ${TIFF_LIBRARY}            INTERFACE_INCLUDE_DIRECTORIES ${TIFF_INCLUDE_DIR}        )    endif()     include(FindPackageHandleStandardArgs)    find_package_handle_standard_args(TIFF REQUIRED_VARS        TIFF_LIBRARY        TIFF_INCLUDE_DIR    )endif()