The stupid thing is that conditions are supported just fine in BSD make, but the syntax is slightly different than GNU make. So you're forced to write for one o

The stupid thing is that conditions are supported just fine in BSD make, but the syntax is slightly different than GNU make. So you're forced to write for one or the other, and GNU make is more widely used - so makefiles end up being GNU make only, even though they don't require any GNU-specific features.