how to warn on unused preprocessor defines...

John (Eljay) Love-Jensen
Sat Jan 12 22:34:00 GMT 2008

> If it's the second case you can use a simple tool such as grep to get a list of all defines (filter ^#define ..)

Or use the preprocessor to generate the list of #define for you:

gcc -E -dM Foo.c | sort > Foo.dM


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