Generating an error if checked boolean macro is not defined

Question

I have several configuration files each one containing the definition of some boolean macro, to be set to 0 or 1. Then, in my code, I check the value of such a macro to deci

Answer 1

What about using the -Wundef gcc preprocessor option? This will only generate a warning, which can easily be turned to an error with -Werror=undef.