What are the gcc predefined macros for the compiler's version number?

Question

I have run into a bug with gcc v3.4.4 and which to put an #ifdef in my code to work around the bug for only that version of the compiler.

What are the GCC compiler p

Answer 1

There's 3 macros for the gcc version you can test on.

__GNUC_MINOR__ 
 __GNUC_PATCHLEVEL__ 
 __GNUC__ 

e.g. my gcc v 4.3.1 defines them as such:

#define __GNUC_MINOR__ 1
#define __GNUC_PATCHLEVEL__ 3
#define __GNUC__ 4

You can see the "buitin" macros defined by running

gcc -E -dM -x c /dev/null