Re: suddenly, "recursive make considered harmful" makes piles of sense

[Boris Kolpackov]

Paul D. Smith <address@hidden> writes:

> %% Boris Kolpackov <address@hidden> writes:
>
> >> There is also a third "philosophy": gmake within any directory will
> >> build that directory and all its dependencies and any subdirectories
> >> and all their dependencies.
>
> One disadvantage to this method is that in order for it to work every
> time you run make it has to read ALL the makefiles.  I work on some
> projects where there are 800+ directories each with a makefile in it,
> and the read-in of all the makefiles for non-recursive builds takes a
> considerable amount of time and memory.

Interesting. I did some tests* and the "responsiveness" of make was quite
good. I didn't have anything near 800 directories, however.

Have you tried to profile this? I believe opening and reading 800 file
on a modern UNIX system is not a big deal per se.

thanks,
-boris

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