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Alex Rivera
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If I want to define a value only if it is not defined, I do something like this : #ifndef THING #define THING OTHER_THING #endif What if THING is a typedef 'd identifier, and not defined? I would like to do something like this: #ifntypedef thing_type typedef uint32_t thing_type #endif The issue arose because I wanted to check to see if an external library has already defined the boolean type, but I'd be open to hearing a more general solution.
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