Re: how to instruct gmake to read included fragmented makefiles paralally..

[John Graham-Cumming]

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Divakar Venkata (divvenka) wrote:
> We use non-recursive make system with over 1000+ fragmented
> makefiles all over source code. We have seen make spending
> lot of time in reading these files and calculating dependency graph
> before starting build.
>  
> Here, is there a way to instruct gmake to read these fragmented
> makefiles paralally and create dependency graph..?

It's almost certainly nothing to do with the loading time on the
Makefiles (unless you are doing something crazy with massive strings),
but more likely the time to stat() files in graph to figure out what
work to do.

You can actually test this theory by making the last line of the
Makefile output the current time using a $(warning).  If you make the
first line do the same then you'll be able to measure the 'loading' time
for the Makefiles.

The time between the second $(warning) and the first job running will
tell you how long all the stat() calls are taking.

What file system is this sitting on?

John.

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