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c++visual-studiopreprocessorcompiler-directives

How to follow preprocessor directives throughout a compilation

I'm working with a program, full of compiler directives, programmed in Visual Studio.

I've made some changes and now I'm stuck with an unresolved external compiler/linker error.

I believe this is caused by the compiler directives, which seem not to detect the implementation of that particular function, and in order to investigate this, I'd like to follow the #ifdef compiler directives throughout the compilation process.

I've already tried using the /P configuration, but I don't see any compiler directive in the Output window.

Does anybody know how to do this?

Solution

  • I think you're on the right track with the /P option, but the doc states that the output will go to files with a .i extension (so probably not to your Output window).

    Further, you may be able to find some help on any linker errors by generating a map file; see /MAP (Generate Mapfile).