RE: upgrading from Automake 1.4

[Joakim Tjernlund]

> -----Original Message-----
> From: Ralf Wildenhues [mailto:address@hidden
> Sent: den 13 september 2008 15:15
> To: Joakim Tjernlund
> Cc: address@hidden
> Subject: Re: upgrading from Automake 1.4
> 
> * Joakim Tjernlund wrote on Sat, Sep 13, 2008 at 02:23:17PM CEST:
> >
> > Moving from automake 1.4 to 1.10.1 I notice a big increase in runtime
> > for automake.  previously with 1.4 I got around 30 seconds, not I get
> > 3 minutes and 45 seconds.  is this normal? Can it be reduced somehow?
> 
> Good question.  I'm afraid to say that, not knowing any better, neither
> remembering efforts to speed up automake, it is probably "normal".
> 
> We have looked at speeding up parts of Autoconf and Libtool before, but
> neglected Automake, for my part mostly out of laziness: the other two
> had quite a few rather low-hanging fruits to pick.
> 
> That said, I have measured at one time that for one large package with
> lots of Automake conditionals and many makefiles (OpenMPI), I am aware
> that automake spends a lot of time in the code that deals with the
> conditionals.  It hasn't bothered me enough yet to look in more detail,
> though.
> 
> Since your code could be exhibiting a different hot spot, and since your
> code provides a unique chance to compare 1.4 and 1.10 performance rather
> easily, would you be so kind and make available the 1.4- and the
> 1.10-using versions of your package for testing automake performance?
> I can't promise when I get to it, but it seems worth a look.

hmm, depends on what you need. I can get you the Makefile.am files(there are a 
lot of them)
but not the whole source tree.

FYI, 1.8 also runs slow, about the same as 1.10
Older(1.5 and 1.6) automake SEGV

    Jocke