Re: how to avoid unnecessary recompile when using configure script

[Bob Friesenhahn]

On Thu, 12 Aug 2004, Andrew Wu wrote:

> I'm looking for help to make my build/make process smarter to
>
> avoid unnecessary recompilation.

The solution to this using Automake is to create just one large 
Makefile.am file at the top of the source tree that knows how to build 
*everything* without using any subordinate Makefile.am or configure 
scripts.  Since make then sees *all* of the source files and *all* of 
the existing targets, it can then decide that it has nothing to do, or 
does only what is actually required.

The ability to reference source files and targets has been in Automake 
for a while.

In order to maintain your sanity, I recommend putting the build 
libraries and executables in simple high-level directories (e.g. 'lib' 
and 'bin').  For example, if you put executables in 'bin', then you 
would refer to that executable like bin_exename (notice use of 
underscore) in Automake.

Bob
======================================
Bob Friesenhahn
address@hidden
http://www.simplesystems.org/users/bfriesen