Opencv编译与clang ok，与GCC不ok OS x 10.9

Question

我在OS X 10.9上安装了opencv-2.4.8.2。我正在尝试编译一个简单的代码:

#include <stdio.h>
#include <opencv2/opencv.hpp>
using namespace cv;
int main(int argc, char** argv )
{
    if ( argc != 2 )
    {
        printf("usage: DisplayImage.out <Image_Path>n");
        return -1;
    }
    Mat image;
    image = imread( argv[1], 1 );
    if ( !image.data )
    {
        printf("No image data n");
        return -1;
    }
    namedWindow("Display Image", WINDOW_AUTOSIZE );
    imshow("Display Image", image);
    waitKey(0);
    return 0;
}

和clang (/usr/bin/g++ -arch x86_64 pkg-config opencv --libs test.cpp)可以做到这一点，但不能使用gcc 4.9 (/usr/local/bin/g++ -arch x86_64 pkg-config opencv --libs test.cpp)。

这是我在gcc 4.9中得到的:

$ /usr/local/bin/g++ `pkg-config opencv --libs` test.cpp
Undefined symbols for architecture x86_64:
  "cv::namedWindow(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)", referenced from:
      _main in cc52UZjK.o
  "cv::imread(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)", referenced from:
      _main in cc52UZjK.o
  "cv::imshow(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&)", referenced from:
      _main in cc52UZjK.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status

有谁能帮我弄清楚为什么吗?

关于编译器的信息:

$/usr/bin/gcc -v配置:——prefix=/Applications/Xcode。应用程序/内容/开发/usr——with-gxx-include-dir =/usr/include/c++/4.2.1。准备Apple LLVM version 5.1 (clang-503.0.40)(基于LLVM 3.4svn)目标:x86_64-apple-darwin13.1.0线程模型:posix

$/usr/local/bin/gcc使用内置规格。COLLECT_GCC =/usr/地方/bin/gccCOLLECT_LTO_WRAPPER =/usr/地方/libexec gcc/x86_64-apple-darwin13.0.0/4.9.0/lto-wrapper目标:x86_64-apple-darwin13.0.0配置:../gcc-4.9-20131215/configure——enable-languages=c++，fortran线程模型:posixgcc版本4.9.0 20131215(实验版)(gcc)

Answer 1

简短的回答是:你不能在OS X 10.9及更新版本上使用GCC来构建c++代码，因为苹果公司改用libc++而不是libstdc++，并且GCC与该运行时不兼容。为了找到一个解决办法，已经做了许多尝试，但最终证明是不可行的。