[lug] OT: Makefile oddity

[Tom Tromey]

>>>>> ">" == D Stimits <stimits at idcomm.com> writes:

Tom> However, there's a bug here.  It is the classic recursive make
Tom> bug: you only have a dependency on the .cpp file.  So if you
Tom> `touch config.h', nothing will be rebuilt -- which is wrong.

>> I don't really consider this a bug, just a limitation of the
>> technology.  makedepend would almost work, except it is designed
>> for C instead of C++, and fails to deal properly with .cpp or .cxx
>> extensions.

I recommend against ever using makedepend.  Instead there is a much
better way to compute dependencies.  Read this:

    http://sources.redhat.com/automake/dependencies.html

This approach is pretty easy to implement if you can assume GNU make
and gcc.  If you need to do it portably, then more effort is required.

Tom