查看OpenCV使用了哪些第三方库

无论官方给出的dll还是自己重新编译的dll，都可以通过这种办法确定到底编译时加入了哪些第三方库

2.4.9官方编译的库

找到opencv的opencv_core249.dll

用UltraEdit打开dll，ctrl+F搜索“libraries”

然后就会看到如下的内容

 Other third-party libraries:
    Use IPP:                     NO
    Use Eigen:                   NO
    Use TBB:                     NO
    Use OpenMP:                  NO
    Use GCD                      NO
    Use Concurrency              YES
    Use C=:                      NO
    Use Cuda:                    NO
    Use OpenCL:                  YES

NO就是没有加入，YES就是已加入

3.0官方编译的库

用UltraEdit打开“opencv_world300.dll”

搜索“3rdparty dependencies”，看到以下信息：

  C/C++:
    Built as dynamic libs?:      YES
    C++ Compiler:                C:/Program Files (x86)/Microsoft Visual Studio 11.0/VC/bin/cl.exe  (ver 17.0.50727.1)
    C++ flags (Release):         /DWIN32 /D_WINDOWS /W4 /GR /EHa  /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /arch:SSE2 /Oi /fp:fast  /wd4251 /wd4324 /MP4  /MD /O2 /Ob2 /D NDEBUG  /Zi
    C++ flags (Debug):           /DWIN32 /D_WINDOWS /W4 /GR /EHa  /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /arch:SSE2 /Oi /fp:fast  /wd4251 /wd4324 /MP4  /D_DEBUG /MDd /Zi /Ob0 /Od /RTC1 
    C Compiler:                  C:/Program Files (x86)/Microsoft Visual Studio 11.0/VC/bin/cl.exe
    C flags (Release):           /DWIN32 /D_WINDOWS /W3  /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /arch:SSE2 /Oi /fp:fast    /MP4  /MD /O2 /Ob2 /D NDEBUG  /Zi
    C flags (Debug):             /DWIN32 /D_WINDOWS /W3  /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /arch:SSE2 /Oi /fp:fast    /MP4  /D_DEBUG /MDd /Zi /Ob0 /Od /RTC1 
    Linker flags (Release):      /machine:X86   /INCREMENTAL:NO  /debug
    Linker flags (Debug):        /machine:X86   /debug /INCREMENTAL 
    Precompiled headers:         YES
    Extra dependencies:
    3rdparty dependencies:       ippicv

说明官方给出的库，默认是使用ipp的

这是更详细的信息：

  Other third-party libraries:
    Use IPP:                     8.2.1 [8.2.1]
         at:                     C:/builds/master_PackSlave-win32-vc11-shared/opencv/3rdparty/ippicv/unpack/ippicv_win
    Use IPP Async:               NO
    Use Eigen:                   NO
    Use TBB:                     NO
    Use OpenMP:                  NO
    Use GCD                      NO
    Use Concurrency              YES
    Use C=:                      NO
    Use pthreads for parallel for:
                                 NO
    Use Cuda:                    NO
    Use OpenCL:                  YES

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