is there a way to list symbols that are defined in c/c++ by #define

Question

I am using eclipse and keep getting an undefined reference to `__assert_func' error in my c/c++ code.

I am wondering if there is a way to tell what is being defined ( # define **). I can manually go through my files, but I am working with a lot of them and this would take a while. Is there a compiler option or a tool that could list these for me?

Thanks,

Sam

Answer 1

You can usually produce the pre-processor output from the compiler - e.g. g++ -E myprog.cpp > myprog.i. I think CL -E does the same thing in Visual Studio, and other compilers tend to have a similar option.

It does sound like your missing function is part of a ASSERT or assert macro.

Answer 2

Undefined reference has nothing to do with #defines. It is a linker error, you may have forgotten to link against a .lib/.a file.

Answer 3

This is dependent on the compiler. You can read this if you're running GCC.

GCC dump preprocessor defines