Bela compiler preprocessor

jeremybernstein

Hi, how would I use the C preprocessor to detect that I'm compiling in the Bela IDE (or on the hardware in general, maybe)? Thanks!

giuliomoro

Not sure what you mean, what are you trying to achieve?

jeremybernstein

I have some code which is intended to run on multiple platforms (for argument's sake, let's say OSX, Windows and two other ARM platforms). Certain features (let's say sizeof(sample_type)) might be switched on or off depending on the actual hardware. So how do I disambiguate between Bela (arm) and RasPi (arm) in the preprocessor? Thanks!

giuliomoro

The easiest way is probably to define a constant at compile time, e.g.: add CPPFLAGS=-DBELA when invoking the Makefile.

jeremybernstein

This is running in the Bela IDE, not from a Makefile project. I haven't found a way to modify the Makefile flags from the IDE, have I overlooked something?

giuliomoro

yes, this 🙂

jeremybernstein

Thanks, that's perfect.