c++ - iOS错误的opencv框架

Question

我正在尝试为 Xcode 构建 opencv 框架。我是 Mac 世界和 opencv 的新手。我按照

上给出的说明进行操作

http://docs.opencv.org/doc/tutorials/introduction/ios_install/ios_install.html

我克隆了存储库 (opencv 2.4.7)，然后尝试运行 python 脚本 - 按照链接上的说明

python opencv/platforms/ios/build_framework.py ios

我收到以下错误，有人可以帮忙吗？我正在使用 OSX 10.8.5

Applications/gebos_third_party_apps/opencv/3rdparty/zlib/gzwrite.c:84:15:

note: did you mean 'fwrite'? got = write(state->fd, strm->next_in, strm->avail_in); ^~~~~ fwrite In file included from /Applications/gebos_third_party_apps/opencv/3rdparty/zlib/gzwrite.c:6: In file included from /Applications/gebos_third_party_apps/opencv/3rdparty/zlib/gzguts.h:21:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.0.sdk/usr/include/stdio.h:252:9:

note: 'fwrite' declared here size_t fwrite(const void * __restrict, size_t, size_t, FILE * __restrict) __DARWIN_ALIAS(fwrite); ^ /Applications/gebos_third_party_apps/opencv/3rdparty/zlib/gzwrite.c:573:9: error: implicit declaration of function 'close' is invalid in C99 [-Werror,-Wimplicit-function-declaration] if (close(state->fd) == -1) ^ 2 errors generated.

** INSTALL FAILED **

The following build commands failed: CompileC /Applications/gebos_third_party_apps/ios/build/iPhoneSimulator-x86_64/3rdparty/zlib/OpenCV.build/Release-iphonesimulator/zlib.build/Objects-normal/x86_64/gzwrite.o

3rdparty/zlib/gzwrite.c normal x86_64 c com.apple.compilers.llvm.clang.1_0.compiler CompileC /Applications/gebos_third_party_apps/ios/build/iPhoneSimulator-x86_64/3rdparty/zlib/OpenCV.build/Release-iphonesimulator/zlib.build/Objects-normal/x86_64/gzlib.o 3rdparty/zlib/gzlib.c normal x86_64 c com.apple.compilers.llvm.clang.1_0.compiler CompileC /Applications/gebos_third_party_apps/ios/build/iPhoneSimulator-x86_64/3rdparty/zlib/OpenCV.build/Release-iphonesimulator/zlib.build/Objects-normal/x86_64/gzread.o 3rdparty/zlib/gzread.c normal x86_64 c com.apple.compilers.llvm.clang.1_0.compiler (3 failures) Traceback (most recent call last): File "opencv-lib/opencv/platforms/ios/build_framework.py", line 112, in build_framework(os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), "../..")), os.path.abspath(sys.argv[1])) File "opencv-lib/opencv/platforms/ios/build_framework.py", line 104, in build_framework put_framework_together(srcroot, dstroot) File "opencv-lib/opencv/platforms/ios/build_framework.py", line 80, in put_framework_together shutil.copytree(tdir0 + "/install/include/opencv2", dstdir + "/Headers") File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 168, in copytree names = os.listdir(src) OSError: [Errno 2] No such file or directory: '../build/iPhoneOS-arm64/install/include/opencv2'

Answer 1

遗憾的是，除了直接修复 zlib 警告之外，解决此问题的最佳方法是将 -Wno-implicit-function-declaration 添加到您的 C_FLAGS ...这可以添加到 build_framework.py在 cmakeargs 列表中作为 -DCMAKE_C_FLAGS=\"-Wno-implicit-function-declaration\":

cmakeargs = ("-GXcode " +
            "-DCMAKE_BUILD_TYPE=Release " +
            "-DCMAKE_C_FLAGS=\"-Wno-implicit-function-declaration\" " +
            "-DCMAKE_TOOLCHAIN_FILE=%s/platforms/ios/cmake/Toolchains/Toolchain-%s_Xcode.cmake " +
            "-DBUILD_opencv_world=ON " +
            "-DCMAKE_INSTALL_PREFIX=install") % (srcroot, target)

.....