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Re: [Libguestfs] FYI, lvs.ml: Unbound value Guestfs.create

On 05/10/09 14:14, Jim Meyering wrote:
This is a good argument for avoiding sub-makes.
On my list of experiments is to convert a project with non-empty
SUBDIRS to build via a single top-level make that includes
pieces from sub-directories.  Improved parallelism via a complete
dependency tree is one advantage, since tools that don't need libraries
don't have to wait for an early library-build to finish before starting.

I actually did this once for a big project with many subdirectories, using automake. I ended up with a single, top level makefile with all the properties you describe. However, the other property it had was that it was so big it took make 15 seconds to parse it. Although it slightly improved a complete rebuild, the overhead made frequent small, partial rebuilds too annoying. I junked it.

Matthew Booth, RHCA, RHCSS
Red Hat Engineering, Virtualisation Team

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