OpenCV failure

=== BUILD AGGREGATE TARGET ZERO_CHECK OF PROJECT OpenCV WITH CONFIGURATION Release ===

Check dependencies

Write auxiliary files
write-file /Users/parriss/Downloads/ios_contrib/build/arm64-iPhoneOS/OpenCV.build/Release-iphoneos/ZERO_CHECK.build/Script-235EB26656434FF481E1F9D2.sh
chmod 0755 /Users/parriss/Downloads/ios_contrib/build/arm64-iPhoneOS/OpenCV.build/Release-iphoneos/ZERO_CHECK.build/Script-235EB26656434FF481E1F9D2.sh

PhaseScriptExecution CMake\ Rules /Users/parriss/Downloads/ios_contrib/build/arm64-iPhoneOS/OpenCV.build/Release-iphoneos/ZERO_CHECK.build/Script-235EB26656434FF481E1F9D2.sh
    cd /Users/parriss/Downloads/opencv-master
    /bin/sh -c /Users/parriss/Downloads/ios_contrib/build/arm64-iPhoneOS/OpenCV.build/Release-iphoneos/ZERO_CHECK.build/Script-235EB26656434FF481E1F9D2.sh
echo ""

make -f /Users/parriss/Downloads/ios_contrib/build/arm64-iPhoneOS/CMakeScripts/ReRunCMake.make
make[1]: `/Users/parriss/Downloads/ios_contrib/build/arm64-iPhoneOS/CMakeFiles/cmake.check_cache' is up to date.

** BUILD FAILED **


The following build commands failed:
	CompileC /Users/parriss/Downloads/ios_contrib/build/arm64-iPhoneOS/3rdparty/zlib/OpenCV.build/Release-iphoneos/zlib.build/Objects-normal/arm64/gzlib.o 3rdparty/zlib/gzlib.c normal arm64 c com.apple.compilers.llvm.clang.1_0.compiler
(1 failure)
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ERROR: Command '['xcodebuild', 'IPHONEOS_DEPLOYMENT_TARGET=6.0', 'ARCHS=arm64', '-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-master/platforms/ios/build_framework.py", line 87, in build
    self._build(outdir)
  File "opencv-master/platforms/ios/build_framework.py", line 81, in _build
    self.buildOne(t[0], t[1], mainBD, cmake_flags)
  File "opencv-master/platforms/ios/build_framework.py", line 139, in buildOne
    execute(buildcmd + ["-target", "ALL_BUILD", "build"], cwd = builddir)
  File "opencv-master/platforms/ios/build_framework.py", line 34, in execute
    retcode = check_call(cmd, cwd = cwd)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 540, in check_call
    raise CalledProcessError(retcode, cmd)
CalledProcessError: Command '['xcodebuild', 'IPHONEOS_DEPLOYMENT_TARGET=6.0', 'ARCHS=arm64', '-sdk', 'iphoneos', '-configuration', 'Release', '-parallelizeTargets', '-jobs', '4', '-target', 'ALL_BUILD', 'build']' returned non-zero exit status 65