【发布时间】：2014-02-21 17:54:26
【问题描述】：
在环顾四周并尝试了我在 SO 上找到的每个选项之后，我对如何在我的 Mac 上加载适用于 x86_64 架构的 OpenCV 库感到有些困惑。这里有一点背景信息：
第一个文件夹包含 Android SDK。二是iPhone框架，使用i386和armv7架构。
现在，我想在 Xcode 中创建一个简单的“Hello World”C++ 应用程序，它需要适合 x86_64 架构的正确库。
我查看了这个tutorial 以及其他人发布的步骤如下：
- mkdir 构建
- cd 构建
- cmake -G "Unix Makefiles" ..
- make -j8
- sudo make install
对于所有版本（OpenCV-2.4.6.1 除外），该过程在“make -j8”处失败。我每次都会遇到同样的错误：
Linking CXX shared library ../../lib/libopencv_core.dylib
Undefined symbols for architecture x86_64:
"___sincos_stret", referenced from:
cv::RotatedRect::points(cv::Point_<float>*) const in matrix.cpp.o
cv::RotatedRect::boundingRect() const in matrix.cpp.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [lib/libopencv_core.2.4.3.dylib] Error 1
make[1]: *** [modules/core/CMakeFiles/opencv_core.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[ 28%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfThreading.cpp.o
[ 28%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfTileDescriptionAttribute.cpp.o
[ 28%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfTiledInputFile.cpp.o
[ 29%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfTiledMisc.cpp.o
[ 29%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfTiledOutputFile.cpp.o
[ 29%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfTiledRgbaFile.cpp.o
[ 29%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfTileOffsets.cpp.o
[ 29%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfTimeCode.cpp.o
[ 29%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfTimeCodeAttribute.cpp.o
[ 29%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfVecAttribute.cpp.o
[ 29%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfVersion.cpp.o
[ 29%] [ 30%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfWav.cpp.o
Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/IlmImf/ImfZipCompressor.cpp.o
Linking CXX static library ../lib/libIlmImf.a
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../lib/libIlmImf.a(IlmThread.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../lib/libIlmImf.a(IlmThreadMutex.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../lib/libIlmImf.a(IlmThreadSemaphore.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../lib/libIlmImf.a(IlmThreadSemaphorePosixCompat.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../lib/libIlmImf.a(IlmThread.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../lib/libIlmImf.a(IlmThreadMutex.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../lib/libIlmImf.a(IlmThreadSemaphore.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: ../lib/libIlmImf.a(IlmThreadSemaphorePosixCompat.cpp.o) has no symbols
[ 30%] Built target IlmImf
make: *** [all] Error 2
pdls-mbp:build pdl$
使用 OpenCV-2.4.6.1，该过程在“sudo make install”处失败，我收到以下错误：
Linking CXX shared library ../../lib/libopencv_core.dylib
Undefined symbols for architecture x86_64:
"___sincos_stret", referenced from:
cv::RotatedRect::points(cv::Point_<float>*) const in matrix.cpp.o
cv::RotatedRect::boundingRect() const in matrix.cpp.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [lib/libopencv_core.2.4.6.dylib] Error 1
make[1]: *** [modules/core/CMakeFiles/opencv_core.dir/all] Error 2
make: *** [all] Error 2
Lucys-MacBook-Pro:build pdl$
当我使用 Homebrew 安装 OpenCV 时，opencv 安装在 use/local/opt/opencv 中，我可以看到 lib 文件夹下的所有 dylib 文件：
所有这一切都让我很困惑，因为我认为我只需要一个 .a 库文件，不是吗？
我在 /usr/local/Cellar/opencv/2.4.6.1/lib 中找到了随 HomeBrew 安装的 dylib 文件，但是当我尝试选择要添加的框架和库时，它们没有显示在列表中。相反，这就是我所看到的：
Aldo，一直在关注这个MacPorts tutorial。
【问题讨论】：
-
DYLIBS 有什么问题？只需动态加载它们。
-
我无法在 Link Binary With Libraries 浏览器中访问它们。安装 MacPorts 并按照 trojanfoe 的说明进行操作后，它就可以正常工作了。