Can't install open cv IOS due to error in "world" modules

edit

Hi the command I ran was this:

./opencv/platforms/ios/build_framework.py ./opencv/build --contrib ./opencv_contrib

and the result I get was below:

The following build commands failed:
    CompileC build/build/armv7-iPhoneOS/modules/world/OpenCV.build/Release-iphoneos/opencv_world.build/Objects-normal/armv7/merge-6593678A7DE2E9A5.o modules/core/src/merge.cpp normal armv7 c++ com.apple.compilers.llvm.clang.1_0.compiler
(1 failure)
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ERROR: Command '['xcodebuild', 'IPHONEOS_DEPLOYMENT_TARGET=6.0', 'ARCHS=armv7', '-sdk', 'iphoneos', '-configuration', 'Release', '-parallelizeTargets', '-jobs', '4', '-target', 'ALL_BUILD', 'build']' returned non-zero exit status 65
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Traceback (most recent call last):
  File "./opencv/platforms/ios/build_framework.py", line 87, in build
    self._build(outdir)
  File "./opencv/platforms/ios/build_framework.py", line 81, in _build
    self.buildOne(t[0], t[1], mainBD, cmake_flags)
  File "./opencv/platforms/ios/build_framework.py", line 139, in buildOne
    execute(buildcmd + ["-target", "ALL_BUILD", "build"], cwd = builddir)
  File "./opencv/platforms/ios/build_framework.py", line 34, in execute
    retcode = check_call(cmd, cwd = cwd)
  File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 541, in check_call
    raise CalledProcessError(retcode, cmd)
CalledProcessError: Command '['xcodebuild', 'IPHONEOS_DEPLOYMENT_TARGET=6.0', 'ARCHS=armv7', '-sdk', 'iphoneos', '-configuration', 'Release', '-parallelizeTargets', '-jobs', '4', '-target', 'ALL_BUILD', 'build']' returned non-zero exit status 65