jyn514
commented
6 years ago this will be hard to do in an extensible way. what I would like to do is have this be the default somehow, the same way that .DELETE_ON_ERROR is currently the default. Unfortunately, there doesn't seem to be a built-in way to do this.
It'd be trivial to make a check_not_empty function which takes a file as input, but that just shifts the onus from the end user to the developer; you would still need to $(call check_not_empty,$@) for every recipe individually.
just had to throw in this emergency patch due to a regression in pandas. This would have been much easier to solve if I'd known which file was empty to start. The makefile should abort if an output file is empty.