multiproject approach

[l2u]

Hello..

So I'm working on solution that has 2 projects (2 applications).
A few source files are being used by both applications.
One file is almost identical, except a few lines should be changed (boost::shared_from_this() instead of this; )

for instance:

for project 1 I need:

return this;

project 2 needs:

return shared_from_this();

Is this the right approach to put macro in front of this like:

#ifdef IS_MACRO_RETURN_THIS
return this;
#else
return shared_from_this();
#endif

Is this the right way to solve that kind of problems?
I havent faced with anything similar so far..

If so, where should I #define IS_MACRO_RETURN_THIS ? On top of main .cpp file?
If not, what would be the right way?

[laserlight]

It sounds like potential maintenance trouble to me. Wouldn't it be better to factor out the common code, and then implement for each project using that common base?

[vart]

you can define it in the project properties