Sorry for the what I am sure is a basic question, but I must not be using the right terms when searching for an answer with code that has hundreds of header files. Simply searching the files for #define statements is tedious. Is there an easy way in Visual Studio or VSCode to just have it step through the files and give me a list of all values literals and their values?
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Konrad Rudolph
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Steven
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This is not a simple question. As an example, consider `#ifdef FOO #define BAR FOO #else #define FOO 42`. How `FOO` is defined depends on `BAR`. Practically, this means you can't analyze headers in isolation, only Translation Units. And that means you get many dependencies on header guards (`#ifndef FOO_H_INCLUDED_ #define FOO_H_INCLUDED_ ... #endif // FOO_H_INCLUDED_`) – MSalters Mar 24 '20 at 10:45
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1Does this answer your question? [GCC dump preprocessor defines](https://stackoverflow.com/questions/2224334/gcc-dump-preprocessor-defines) – Lanting Mar 24 '20 at 10:49
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The closest you can get is to use the /P compiler switch to dump the preprocessed output to a file. It's going to be pretty huge, but it shows you precisely what the compiler is working with, and you can do a text search in the output file to find what you're looking for.
tenfour
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IMO you could run diff against the *cpp and output and this would give you some insight – bartop Mar 24 '20 at 11:13