-----Original Message-----
From: Erik Andersen [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 21, 2000 4:30 PM
To: Dave New
Cc: 'Jerry Beckmann'; [EMAIL PROTECTED]
Subject: Re: BlueCat Linux
On Tue Mar 21, 2000 at 12:35:21PM -0600, Dave New wrote:
>
<snip>
<disclaimer -- Not speaking for Lineo>
> In practice, Embedix is based on Caldera only when being based on Caldera
makes
> sense for an embedded system. You will find that the Embedix base system
has
> very little in common with Caldera. The Caldera stuff really only applies
to
> optional packages. The base system relies on BusyBox for most things
(BusyBox
> is GPLed and maintained by me -- website at http://busybox.lineo.com), and
it
> uses library reduction to trim down the shared libraries to an absolute
> minimum. You can put an awful lot of Linux in a very small footprint this
way.
Thanks for pointing that out, Erik (and pleased to meet you 8-).
I had forgotten about this cool feature.
I had the nice surprise of setting up an Embedix 1.0 system with a
relatively minimal set of modules running, and with the two virtual
terminals, and a telnet and web server session running, seeing
only about a 4 MByte memory commit. Very nice. I'm looking
forward to placing what I need in the 4 MByte FLASH, with
room to spare for an application, and dispensing with the
IDE drive.
> The upcoming Software Development Kit (SDK) will allow you to select the
exact
> components you want in your embedded distribution. It automagically
handles
> all the dependencies (so if you enable the "ping" application, it will
> automagically make sure that for the target image it is building that libc
will
> be compiled with libresolv and libnss_dns, that /etc/nsswitch.conf will be
set
> up properly with "hosts" and "networks" entries, and that the kernel will
be
> compiled with ipv4 support and it will flag you that some type of
networking
> driver (ppp, an ethernet driver, whatever) is required for a working
system.
> That saves tons of time and lets folks hand roll an embedded Linux that
exactly
> suits their needs (rather then making do with a one-size-fits-all). When
you
> hit "go" the SDK compiles up the whole thing from source and builds you a
> bootable image that is ready to go. And it allows you to perform easy
> configuration management on your images, so you can go back and rebuild
your
> XP-37rev4 image 6 months later and apply one bug fix and be sure that
nothing
> else has changed in the image. It is already pretty slick to use (but not
> quite ready for release yet -- a couple more weeks till we release it to
the
> test department (hopefully they won't find too many bugs ;-) ).
</disclaimer>
I've seen systems like this for certain commercial source-available RTOS
systems. But, seeing this for Linux will be a big boost, IMO. Hopefully,
the schema for creating dependency graphs for things that I am developing
will be made clear, or else it will be difficult to merge outside packages
into such a system. I'm also looking forward to an easy-to-configure
version
of Embedix that includes the RTLinux stuff (I notice that Lineo recently
purchased Zentropix, the 'RTLinux on a CD-ROM' vendor).
> hope this helps,
Thanks, and cheers,
> -Erik
> Erik B. Andersen Web: http://www.xmission.com/~andersen/
> email: [EMAIL PROTECTED]
> --This message was written using 73% post-consumer electrons--
-- DaveN
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