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c-code after preprocessor operation in eclipse [message #1718833]

Wed, 30 December 2015 21:47

rene koenig

Messages: 1
Registered: December 2015

Junior Member

Hello,

I want to show the result after preprocessor operation in eclipse cdt.
With gcc -E, I can show the C source code after the preprocessor operation. Is that possible to add gcc- E in a configuration of eclipse to show the C code after preprocessor operation?

best regards

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Re: c-code after preprocessor operation in eclipse [message #1718885 is a reply to message #1718833]

Thu, 31 December 2015 19:25

David Vavra

Messages: 1426
Registered: October 2012

Senior Member

The answer is yes.
Is it safe to presume you are asking how?

Go to Manage configurations (it's in many places and not just in the Build Variables dialog as shown)
http://help.eclipse.org/mars/index.jsp?topic=%2Forg.eclipse.cdt.doc.user%2Freference%2Fcdt_u_prop_all.htm
Make a new configuration.

Go to Project ==> Properties ==> C/C++ Build ==> Settings and change the gcc compiler command. in the Tool Settings tab.
You probably will want to redirect the output to a file so the command will be something like: gcc -E ... > $(ProjName).preprocessOutput

[Updated on: Thu, 31 December 2015 19:34]

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