Anything like #pragma warn "my message" in GCC?

[Eljay Love-Jensen]

For GCC (at least, GCC 3.3.1):

#warning "This is a warning"

#error "This is an error"

I'm not 100% sure, but I think #warning is an extension.  And #error is in 
the standard.

For an "info" you may want to use this convention:

#warning "INFO: this is informative"

HTH,
--Eljay