Header file debug

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heinrichs.hj
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Posted by heinrichs.hj: Fri. Nov 21, 2008 - 11:19 AM
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Hi all,

I would like to debug a C-header-file.
The diagnostic macros #error and #warning accept and output strings only.

Is there a way to display the value of expanded macros during compilation process?

Thanks,
HJ

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Tools, Compilers and General Programming
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timgoh0
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Posted by timgoh0: Fri. Nov 21, 2008 - 01:28 PM
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Run cpp(1), the C preprocessor on the file manually?

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TimothyEBaldwin
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Posted by TimothyEBaldwin: Fri. Nov 21, 2008 - 04:11 PM
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That would be avr-cpp. But I think some predefined macros will not be set that way.

Also passing the -E option to avr-gcc will list the preprocessed source code, but not compile it.

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heinrichs.hj
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Posted by heinrichs.hj: Sat. Nov 22, 2008 - 09:30 PM
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Thanks for the feedback.

I'am aware of option -E, but was looking for an easier way.

Best regards,
HJ

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clawson
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Location: (using avr-gcc in) Finchingfield, Essex, England
Posted by clawson: Sun. Nov 23, 2008 - 06:25 PM
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If you use an Mfile generated Makefile then just use "make fred.i" for a file called fred.c and you'll end up with a copy of the preprocessed file with all the .h files included and macros expanded.

Cliff

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