makefile dependency revamp

[Ian Lance Taylor]

Ralf Wildenhues <Ralf.Wildenhues@gmx.de> writes:

> I'm sure I must be missing something blatantly obvious, but:
> why is bintuils generating dependencies in trees that use automake
> anyway?  Is there anything wrong with automatic dependency tracking?

Historically we did it because 1) our dependency tracking system
preceded to conversion to automake, so we had it anyhow; 2) when we
converted to automake, automake's dependency tracking was not reliable
for all compilers, and since the binutils are required for gcc on some
platforms people do build the binutils with all sorts of compilers.

These days it may be quite reasonable to switch over to automake's
dependency tracking.

Ian