libjpeg-turbo的安裝包沒有提供用於CONFIG模式查詢包(find_package)的cmake指令碼,如果cmake指令碼中要查詢libjpeg-turbo庫，就得自己寫指令碼。
於是我參照cmake 查詢標準libjpeg庫 的Module FindJPEG原始碼的寫法實現了libjpeg-turbo的Module FindTurboJPEG.cmake。
為了更方便引用libjpeg-turbo，module中不僅提供了傳統的變數方式TURBOJPEG_INCLUDE_DIR，TURBOJPEG_LIBRARY提供libjpeg-turbo的資訊，還提供import target:turbojpep

# 通過查詢turbojpeg.h定位libjpeg-turbo的include資料夾位置
find_path(TURBOJPEG_INCLUDE_DIR turbojpeg.h)

set(TURBOJPEG_NAMES ${TURBOJPEG_NAMES} turbojpeg libturbojpeg)
find_library(TURBOJPEG_LIBRARY NAMES ${TURBOJPEG_NAMES} )

# handle the QUIETLY and REQUIRED arguments and set TURBOJPEG_FOUND to TRUE if
 

# all listed variables are TRUE
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(TURBOJPEG DEFAULT_MSG TURBOJPEG_LIBRARY TURBOJPEG_INCLUDE_DIR)

if(TURBOJPEG_FOUND)
    # for compatility of find_dependency
    set (TurboJPEG_FOUND TRUE)
    # Create imported target turbojpeg
 

    add_library(turbojpep SHARED IMPORTED)
    # import target中指定include資料夾
    set_target_properties(turbojpep PROPERTIES
      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
      INTERFACE_INCLUDE_DIRECTORIES "${TURBOJPEG_INCLUDE_DIR}"
      IMPORTED_LOCATION "${TURBOJPEG_LIBRARY}"
      )
    if(MSVC)
        set(_stati_library_name ${CMAKE_STATIC_LIBRARY_PREFIX}turbojpeg-static${CMAKE_STATIC_LIBRARY_SUFFIX})
    else()
        set(_stati_library_name ${CMAKE_STATIC_LIBRARY_PREFIX}turbojpeg${CMAKE_STATIC_LIBRARY_SUFFIX})
    endif()
    # 查詢libjpeg-turbo靜態庫
    find_library(TURBOJPEG_LIBRARY_STATIC ${_stati_library_name})
    # 如果找到靜態庫，則建立turbojpeg-static target
    if(TURBOJPEG_LIBRARY_STATIC)
        # Create imported target turbojpeg-static
        add_library(turbojpeg-static STATIC IMPORTED)
        # import target中指定include資料夾
        set_target_properties(turbojpeg-static PROPERTIES
          IMPORTED_LINK_INTERFACE_LANGUAGES "C"
          INTERFACE_INCLUDE_DIRECTORIES "${TURBOJPEG_INCLUDE_DIR}"
          IMPORTED_LOCATION "${TURBOJPEG_LIBRARY_STATIC}"
          )
        message(STATUS "TURBOJPEG_LIBRARY_STATIC=${TURBOJPEG_LIBRARY_STATIC}")
    else()
        message(STATUS "NOT FOUND jpeg-turbo static library")
    endif()

    unset(_stati_library_name)
endif()

mark_as_advanced(TURBOJPEG_LIBRARY TURBOJPEG_INCLUDE_DIR )

import target引用示例：

# 需要將FindTurboJPEG.cmake的位置加入CMAKE_PREFIX_PATH,cmake才能找到
find_package(TurboJPEG REQUIRED)
## 優先使用靜態庫
if(TARGET turbojpeg-static)
    set (_turbojpeg_target "turbojpeg-static")
else()
    set (_turbojpeg_target "turbojpeg")
endif()
# 因為import target已經包含了libjpeg-turbo的include資訊，
# 所以會自動傳遞被引入的專案mytarget，所以mytarget 不必再單獨新增include_directories
target_link_libraries(mytarget ${_turbojpeg_target})