Jason Lindquist (jlindquist) wrote,
Jason Lindquist

C Preprocessor predefined macros

I did some work on a Solaris driver on the Sparc architecture, and now I need to move it over to x86. A couple of memory operations are different, and I'd prefer to handle them automatically, without requiring a -D flag on the compile line.

With gcc, you want cpp -dM < /dev/null. With Sun's tools, you need a foo.c that contains a simple program (something with a main() function which does nothing but return 0.) Then you run CC -xdumpmacros foo.c

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