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gcc file.c -DDEFINITION > file_without_#ifdef.c possible??

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derverstand
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Posted: Tue Aug 29, 2006 11:36 am Post subject: gcc file.c -DDEFINITION > file_without_#ifdef.c possible?

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Hi,

Let be file.c a source file which includes a section like:

Code:

...
#ifdef DEFINITION
something
#endif
...

Is it possible to run only the preprocessor, such that gcc -DDEFINITION file.c produces an output file containing:

Code:

...
something
...

Best regards!

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Ferdinando
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Joined: 25 Nov 2003
Posts: 1027
Location: Gaeta (LT) - Italy

Posted: Tue Aug 29, 2006 11:53 am Post subject:

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Use cpp (C pre-processor):

Code:

cpp -DDEFINITION file.c | grep -v '^#'

Should work; the grep is meant to cut the additional info.

Bye
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