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Eclipse CDT: force indexing conditionally compiled code

Our code base conditionally compiles code based on compile-time configs. CDT plugin in Eclipse currently does not index compiled-out code, so I can't jump to a function definition if it's within #ifdef. How could I enable indexing to work?

Solution

  • You can't assume that code would compile if the conditionals are ignored. In this light this feature cannot work (in the general case).

    I suggest using a build configuration that defines all the required symbols to compile all the blocks. Of course that means that instead of having

    #ifdef FEATURE_X
    code;
#else
    other code;
#endif

    you'll have to use the more cumbersome

    #ifdef FEATURE_X
    code;
#endif
#ifdef FEATURE_Y
    other code;
#endif

    So you can let the indexer work with -DFEATURE_X -DFEATURE_Y. However, you can't debug in such configuration, because both blocks would get executed as well