Hi Ian , you have helped to narrow my search but still finding it . . .
Ian Lance Taylor-3 wrote:
>
> ankit writes:
>
>> Problem Statement : Given a C file which has several macros defined (eg.
>> #define MACRO 10) . I need to know what all macros are defined and their
>> usage point(eg. line number) in the code.
>>
>> Need to know this information during or after gcc pre-processing phase.
>>
>> Possible solution may dump this macro information in some file.
>>
>> Is there any way that gcc can dump this information and if yes how?
>
> Look at the implementation of -dD and the implementation of -g3. gcc
> does have this information, though it may not be in a particularly
> convenient form.
>
> Ian
>
>
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