Re: [ggt-devel] SCons installation slow and messy

[Ben S. <bs...@ga...>]

Well, the .sconsign problem can be solved by adding a line containing
SConsignFile() to the SConstruct to force SCons to use a single file for
all the cached data in the same directory as the SConstruct.

As for MD5 summing the entire installation tree, that is a problem. I'm
not entirely sure what's going on there. However, we might be able to make
that problem go away by adding the following line to the SConstruct:

SetOption('implicit-deps-unchanged', 1)

Give that a shot and see if that improves your install time.

cheers,
-ben

> I just performed an installation of GMTL 0.3.5 in a freshly created user's
> home directory, and the process took three full minutes--probably because
> SCons was pooping .sconsign files throughout the user's *entire* home
> directory.  I ran the GMTL build+install as follows:
>
>    % scons install prefix=$HOME
>
> Is it really necessary for SCons to do its MD5 summing over the entire
> installation tree?  (I am assuming that SCons is doing this because of the
> 'prefix' setting above and not just out of general confusion during the
> build phase.)  For a sufficiently large directory tree, this wouild make
> the GMTL build+install appear to hang for no obvious reason.  I can
> definitely say that I have cancelled many a GMTL installation thinking
> that SCons had gotten stuck on some step or another.
>
> Lastly, I realize that this is really an SCons question and not a GMTL
> question.  In my (limited) experience with SCons, it seems like SCons
> usually does the right thing, and it's the SConstruct file that has the
> problem.  If this is an SCons problem (feature?), then I will redirect my
> discontent to their mailing list.
>
>  -Patrick
>
>
>
>
>
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