CODEWITHSUNDEEP
c++boostvisual-studio-2013boost-preprocessor
Kevin Anderson
Kevin Anderson

Reputation: 7010

Find out what #define statements conflict between .h files

I'm in VS2013, C++ console applications. I'm having a problem integrating boost into a large framework. If I try integrating them in a blank console application, they work fine. Once I include the "root" .h file of the framework (that includes "many" other .h files in the bargain), it breaks. These .h files are "polluting" the boost ones (and anything included after, with mixed results, and no, I can't just include boost ones first, that's not always an option unfortunately). I've found at least one root-level #define that interfered and caused a compile error, but I can't find some of the other conflicts that are causing run-time problems.

Specifically, my problem is this: how do I tell what symbols have been defined by .h files? And hopefully, which ones are then conflicting later? I tried googling, but couldn't find a tool for doing this.

Or is there some other method which can "isolate" them (my problem .h files), and yet still have them link correctly to the functions they're calling in other .dlls?

Upvotes: 1

Views: 148

Answers (2)

Mark B
Mark B

Reputation: 96241

You can use g++ -E as a static code checking tool (without changing your toolset). It is able to tell you when something is redefined but not when a #define is used as another name (it would have no way to tell whether it was a real substitution or not).

If that's not the source of your problem then you may need to take a more holistic approach: Start changing your project's #define use to other constructs such as const and short functions. This will then allow the compiler to either resolve differences by overloading or complain that there are conflicts.

Upvotes: 1

danish
danish

Reputation: 359

Including same header file again might have caused the problem,you can create a symbol for each header file so that if that header file is already included in some other header file it shouldn't be included.

#ifndef
#define __header_file_name_H
.....some code
#endif

Upvotes: 0

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