Re: some questions about t2

Hi Elia,

welcome to the list.

On Saturday 09 June 2007 15:33:04 z4ziggy wrote:

> I too am a new user of t2, coming from buildroot. I like the vast
> package collection and i am mainly interested in a uclibc (embedded)
> system. however, i have some problems/questions:
> 
> 1. why does it take so long for the configuration to move from one
> window to the other? as another user had pointed that out - about 15
> seconds!

I just answered this in the other mail, to quote:

"
Yes, this is because the Config is restarted again on each config
change. This is an implementatino bug and probably the authors
did not know better at that time (read 5 years ago). Though on
that time the Config was not that slow because there where 2000
less packages and a handful of options less as well.

The slowness is why we already started accelerating the worst
code-pathes with Lua code.

We already have on our Roadmap to rewrite the remaining parts,
including a more inteligent implementation not restarting the
whole Config process again after every Config change:

  http://www.t2-project.org/releases/
  http://www.t2-project.org/developer/soc.html
"

> 2. i didnt like the package collection of the "embedded" target (perl,
> automake, etc, are not needed on my target system) so i've copied the
> embedded directory to another name, changed the title, and removed all
> packages i didnt want. this didnt work, and the Build-Target
> complained about all kinda errors (if needed ill do it again and post
> the exact errors). What is the easiest/quickest way to create a simple
> embedded system with only uclibc and busybox? and what is the way to
> configure what options i want on my busybox (on buildroot i could
> simple alter the config file under 'package' directory, but i dont see
> this on t2).

Copying like this is usually fine. Maybe you just missed a little detail.
Just do it again and post the detailed error, so we can help.

For an introductoin about targets in T2 you can read the handbook at:

  http://www.t2-project.org/handbook/html/t2.target.html

> 3. related to my 2nd issue - what is the best way to alter the
> configuration files and configure options of the packages which are
> being built? i didnt see any information about this on the t2
> tutorial.

The target section of the handbook lists this:

  http://www.t2-project.org/handbook/html/t2.target.modifications.html

> 4. me too got an error on the gmp package (im using the t2-svn
> versions) - although ive read on the ML that this was fixed - am i
> missing something?

Using the 6.0 branch should have worked.

Maybe you used the trunk or the fresh 7.0 branch. Unfortuantly
we had a regression in the C++ cross compiler STL header patch.

This was fixed about a week ago. Can you retry and post if you still
get this error?

> many thanks for this great product. i hope to be able to produce a
> useful distribution out of it once it works :)

Thanks you are welcome! Yours,

-- 
  René Rebe - ExactCODE GmbH - Europe, Germany, Berlin
  Geschäftsführer: Susanne Klaus, René Rebe
  Sitz: Berlin, Amtsgericht Charlottenburg HRB 105 123 B
  USt-IdNr.: DE251602478
  http://exactcode.de | http://t2-project.org | http://rene.rebe.name

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