ios - Opencv自定义编译

Question

我正在尝试减少 ios 的 opencv2.framework 大小。我的项目只使用 core、imgproc 和 highgui 模块。我怎样才能只用那些模块进行编译？或者是否有减小尺寸的替代方案？

谢谢。

Answer 1

我现在在 3.1 版中遇到了这个问题，nebuto 的答案很接近，但目前还不完整。以下通过更新 build_framework.py 文件能够产生预期的结果。

def getCMakeArgs(self, arch, target):
    args = [
        "cmake",
        "-GXcode",
        "-DBUILD_SHARED_LIBS=OFF",
        "-DBUILD_opencv_core=ON",
        "-DBUILD_opencv_imgcodecs=OFF",
        "-DBUILD_opencv_imgproc=ON",
        "-DBUILD_opencv_world=OFF",
        "-DBUILD_opencv_gpu=OFF",
        "-DBUILD_opencv_calib3d=OFF",
        "-DBUILD_opencv_contrib=OFF",
        "-DBUILD_opencv_features2D=OFF",
        "-DBUILD_opencv_flann=OFF",
        "-DBUILD_opencv_highgui=ON",
        "-DBUILD_opencv_legacy=OFF",
        "-DBUILD_opencv_ml=OFF",
        "-DBUILD_opencv_nonfree=OFF",
        "-DBUILD_opencv_objdetect=OFF",
        "-DBUILD_opencv_photo=OFF",
        "-DBUILD_opencv_stitching=OFF",
        "-DBUILD_opencv_video=OFF",
        "-DBUILD_opencv_videoio=OFF",
        "-DBUILD_opencv_videostab=OFF",
        "-DAPPLE_FRAMEWORK=ON",
        "-DCMAKE_INSTALL_PREFIX=install",
        "-DCMAKE_BUILD_TYPE=Release",
    ]
    return args

此更新还包括两个新模块，它们似乎在 2.4.6 中不存在。

为了节省一些额外费用，您可以删除位于文件底部的模拟器构建的 i386 设置。如果您的应用是 iOS 9 及更高版本，并且您希望省略 32 位设备，您也可以去掉 armv7 选项。

b = Builder(args.opencv, args.contrib,
    [
        ("armv7", "iPhoneOS"),
        ("armv7s", "iPhoneOS"),
        ("arm64", "iPhoneOS"),
        #("i386", "iPhoneSimulator"),
        ("x86_64", "iPhoneSimulator"),
    ])
b.build(args.out)