* Tools question
@ 2003-11-24 18:32 Christopher R. Johnson
2003-11-24 19:14 ` Wolfgang Denk
2003-11-25 6:08 ` Dan Kegel
0 siblings, 2 replies; 4+ messages in thread
From: Christopher R. Johnson @ 2003-11-24 18:32 UTC (permalink / raw)
To: linuxppc-embedded
This is probably way too big a question to ask here, but I'm hoping
someone can help me. I have inherited a gcc 2.95.3 cross development
tool chain, which has been working fine to build for my powerpc-linux
target machine. I'm building the kernel and user programs fine. I'm
beginning to find as I add things in that I'm missing libraries. Today
its libresolv which I need for pump. Some questions:
1. Do I really need to go back and build my own tool chain? I've tried
grabbing 2.95.3 sources and building by running configure with
--target=powerpc-linux, but I get some missing include file errors
building libgcc2.a. I'm on a 405GP (no fp). Should I even bother doing
this?
2. On my intel development machine I see that libresolv.a comes from
glibc-devel-2.2.5-34. I have gcc-2.96-110 for my compiler. Should I go
find a version of glibc-devel that matches up with my existing 2.95.3
tools? How will I know if its the right version?
3. Better yet, is there somewhere I can just obtain a reasonable tool
chain that's ready-built for my target machine? Complete with libraries?
Sorry for the newbie type questions. I have the "Using and Porting GNU
CC" book, but am finding it a little too Stallman-esque to follow. Anyone?
Thanks!
Chris Johnson
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^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: Tools question
@ 2003-11-24 19:01 Wells, Charles
0 siblings, 0 replies; 4+ messages in thread
From: Wells, Charles @ 2003-11-24 19:01 UTC (permalink / raw)
To: 'cjohnson@gcctech•com'; +Cc: linuxppc-embedded
Chris,
There are existing tool chains that I'm sure someone else will recommend. I
built my own and I prefer that approach. You learn a lot by doing it. A
good reference for building tool chains can be found in the book "Building
Embedded Linux Systems" by Karim Yaghmour. See
<http://www.oreilly.com/catalog/belinuxsys/>.
Regards,
Charlie
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Tools question
2003-11-24 18:32 Tools question Christopher R. Johnson
@ 2003-11-24 19:14 ` Wolfgang Denk
2003-11-25 6:08 ` Dan Kegel
1 sibling, 0 replies; 4+ messages in thread
From: Wolfgang Denk @ 2003-11-24 19:14 UTC (permalink / raw)
To: cjohnson; +Cc: linuxppc-embedded
Dear Chris,
in message <3FC24EB1.60106@gcctech•com> you wrote:
>
> 1. Do I really need to go back and build my own tool chain? I've tried
Yes, you do - at least if you want to make sure you completely
understand the technology and that you will in all situations be able
to build your tools from scratch.
> 2. On my intel development machine I see that libresolv.a comes from
> glibc-devel-2.2.5-34. I have gcc-2.96-110 for my compiler. Should I go
> find a version of glibc-devel that matches up with my existing 2.95.3
> tools? How will I know if its the right version?
If you stick with your existing toolchain you must find a version of
glibc-devel that matches your glibc. The compiler version is not so
much interesting here.
> 3. Better yet, is there somewhere I can just obtain a reasonable tool
> chain that's ready-built for my target machine? Complete with libraries?
Did you ever have a look at our ELDK? It's free for download, and a
lot of projects seem to be using it (and of course we use it ourself
for a couple of projects, too).
Please see http://www.denx.de/twiki/bin/view/DULG/ELDK for details.
> Sorry for the newbie type questions. I have the "Using and Porting GNU
> CC" book, but am finding it a little too Stallman-esque to follow. Anyone?
Karim Yaghmour: "Building Embedded Linux Systems" [Paperback: 400
pages, O'Reilly & Associates; (May 2003); ISBN 059600222X] is
definitely worth reading.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx•de
"This isn't brain surgery; it's just television." - David Letterman
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Tools question
2003-11-24 18:32 Tools question Christopher R. Johnson
2003-11-24 19:14 ` Wolfgang Denk
@ 2003-11-25 6:08 ` Dan Kegel
1 sibling, 0 replies; 4+ messages in thread
From: Dan Kegel @ 2003-11-25 6:08 UTC (permalink / raw)
To: cjohnson; +Cc: linuxppc-embedded
Christopher R. Johnson wrote:
> This is probably way too big a question to ask here, but I'm hoping
> someone can help me. I have inherited a gcc 2.95.3 cross development
> tool chain, which has been working fine to build for my powerpc-linux
> target machine. I'm building the kernel and user programs fine. I'm
> beginning to find as I add things in that I'm missing libraries. Today
> its libresolv which I need for pump. Some questions:
>
> 1. Do I really need to go back and build my own tool chain? I've tried
> grabbing 2.95.3 sources and building by running configure with
> --target=powerpc-linux, but I get some missing include file errors
> building libgcc2.a. I'm on a 405GP (no fp). Should I even bother doing
> this?
Only if you run into trouble with your old compiler.
If and when you decide to rebuild the compiler, see
http://kegel.com/crosstool for a recipe you can follow.
> 2. On my intel development machine I see that libresolv.a comes from
> glibc-devel-2.2.5-34. I have gcc-2.96-110 for my compiler. Should I go
> find a version of glibc-devel that matches up with my existing 2.95.3
> tools? How will I know if its the right version?
Again, http://kegel.com/crosstool (if you study it, and compare it
with Karim's book) will help show you how to build the glibc of your
choice.
> 3. Better yet, is there somewhere I can just obtain a reasonable tool
> chain that's ready-built for my target machine? Complete with libraries?
That same URL can show how to build a reasonable toolchain for the ppc405
without any thought on your part, if you choose to not read and
understand the script. It's always better to read and understand, though.
> Sorry for the newbie type questions. I have the "Using and Porting GNU
> CC" book, but am finding it a little too Stallman-esque to follow. Anyone?
Your question is quite reasonable.
BTW, which glibc does your toolchain use?
- Dan
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
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2003-11-24 18:32 Tools question Christopher R. Johnson
2003-11-24 19:14 ` Wolfgang Denk
2003-11-25 6:08 ` Dan Kegel
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2003-11-24 19:01 Wells, Charles
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