为iOS构建OpenCV失败

Question

我从GitHub下载了OpenCV文件夹，并按照自述文件的说明为ios构建了该文件夹。 使用python opencv/platforms/ios/build_framework.py ios命令后，出现以下错误：

Executing: ['cmake', '-GXcode', '-DAPPLE_FRAMEWORK=ON', '-DCMAKE_INSTALL_PREFIX=install', '-DCMAKE_BUILD_TYPE=Release', '-DIOS_ARCH=armv7', '-DCMAKE_TOOLCHAIN_FILE=/Users/name/Downloads/opencv/platforms/ios/cmake/Toolchains/Toolchain-iPhoneOS_Xcode.cmake', '-DENABLE_NEON=ON', '/Users/name/Downloads/opencv', '-DCMAKE_C_FLAGS=-fembed-bitcode', '-DCMAKE_CXX_FLAGS=-fembed-bitcode'] in /Users/name/Downloads/ios/build/build-armv7-iphoneos
============================================================
ERROR: [Errno 2] No such file or directory
============================================================
Traceback (most recent call last):
  File "opencv/platforms/ios/build_framework.py", line 112, in build
    self._build(outdir)
  File "opencv/platforms/ios/build_framework.py", line 104, in _build
    self.buildOne(t[0], t[1], mainBD, cmake_flags)
  File "opencv/platforms/ios/build_framework.py", line 186, in buildOne
    execute(cmakecmd, cwd = builddir)
  File "opencv/platforms/ios/build_framework.py", line 36, in execute
    retcode = check_call(cmd, cwd = cwd)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 535, in check_call
    retcode = call(*popenargs, **kwargs)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 522, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1335, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

我必须做些什么来解决它？

Answer 1

如果将来有人会有同样的问题。 这个问题在master分支中，下载分支2.4并在PATH中添加CMake，构建过程顺利进行

Answer 2

我也遇到了同样的问题。 在master分支或3.4分支或2.4分支中。 但是在安装cmake之后，就可以了。

在2.4分支中，错误消息将显示：

/bin/sh: cmake: command not found