Undefined symbol std::__throw_bad_function_call

问题

I'm building C++ code in Eclipse CDT with g++ and I'm getting the following linker error:

Undefined symbols for architecture x86_64:
  "std::__throw_bad_function_call()", referenced from:
      std::function<void (graphics::RenderingContext*)>::operator()(graphics::RenderingContext*) const in GameWindow.o

I have std::function members in a class called GameWindow.

Is there something I have to link to in order to get code using std::function to link properly?

回答1:

Turns out my lib path wasn't set correctly for g++.

For posterity: I use gcc 4.7 for compiling because I need C++11 features. XCode (on OS X Mountain Lion), ships with gcc 4.2 so I installed gcc 4.7 through Homebrew.

For Eclipse to compile with gcc 4.7, I had to change the path to the compiler and linker in project settings to correspond to the newly installed via Homebrew version. However, I still had the old library path to the gcc 4.2 stdlibc++ in my project settings.

回答2:

If this is your only error, why you don't try to implement that function in your own code? something like:

namespace std {
    void __throw_bad_function_call() {throw bad_function_call("invalid function called");}
}

来源：https://stackoverflow.com/questions/12942538/undefined-symbol-std-throw-bad-function-call