[ECOS] any experiences with arm gcc 3.4.1 and ecos ?

[ECOS] any experiences with arm gcc 3.4.1 and ecos ?

[Neundorf, Alexander]

Hi,

is anybody here who already tried the most recent gnu arm toolchain with ecos, e.g. from www.gnuarm.org ?

Any experiences ? Faster, slower, buggier, better ?

Alex

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Re: [ECOS] any experiences with arm gcc 3.4.1 and ecos ?

[fredrik]

> is anybody here who already tried the most recent gnu arm toolchain
> with ecos, e.g. from www.gnuarm.org ?
>
> Any experiences ? Faster, slower, buggier, better ?

GCC 3.4.x has a much faster implementation of floating point operations.
If you are using alot of float and double, you can get much faster code.
I'm using GCC-3.4.1, binutils-2.14, newlib-1.12.0, gdb/insight-5.3 and it
works really great. The code gets some kilobytes larger with GCC 3.4.x
than with GCC 3.3.x though.
We are not using binutils-2.15 since I have experienced bugs in
arm-elf-objdump. We simply  cannot disassemble our elf-file.
We are not using GDB-6.1.1 since I experienced that our eCos stubs uses an
obsolete register setup. GDB-5.3 works fine. Maybe this is fixed in eCos
HEAD, we are using the 2.0 release.
Regards,
Fredrik Hederstierna




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RE: [ECOS] any experiences with arm gcc 3.4.1 and ecos ?

[Richard Rauch]

Hi,
with our actual version of gcc (v3.2) we have problems with linking. It
seems, that in the new version the problems are fixed.
But with this version i cannot build ecos correctly. when linking the
application, we will get multiple definitions ( e.g. icmpstat/cyc_icmpstat).
It looks like, that this variables are multidefined because of declarations
in header files (e.g. icmp_var.h)
Now we are changing Ecos Source Code.
Are there more problems, we have to expect?
Wo have already a eCos version prepared for gcc 3.4.1

Regards

Richard


-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org
[mailto:ecos-discuss-owner@ecos.sourceware.org]On Behalf Of
fredrik@wespot.com
Sent: Donnerstag, 29. Juli 2004 22:11
To: Alexander.Neundorf@jenoptik.com
Cc: ecos-discuss@sources.redhat.com
Subject: Re: [ECOS] any experiences with arm gcc 3.4.1 and ecos ?


> is anybody here who already tried the most recent gnu arm toolchain
> with ecos, e.g. from www.gnuarm.org ?
>
> Any experiences ? Faster, slower, buggier, better ?

GCC 3.4.x has a much faster implementation of floating point operations.
If you are using alot of float and double, you can get much faster code.
I'm using GCC-3.4.1, binutils-2.14, newlib-1.12.0, gdb/insight-5.3 and it
works really great. The code gets some kilobytes larger with GCC 3.4.x
than with GCC 3.3.x though.
We are not using binutils-2.15 since I have experienced bugs in
arm-elf-objdump. We simply  cannot disassemble our elf-file.
We are not using GDB-6.1.1 since I experienced that our eCos stubs uses an
obsolete register setup. GDB-5.3 works fine. Maybe this is fixed in eCos
HEAD, we are using the 2.0 release.
Regards,
Fredrik Hederstierna




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and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss




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[ECOS] Linker Problem eCos 2.0 and gcc 3.4.1 (arm-elf)

[Richard Rauch]

after fixing some small problems ( compiler flags, which are not longer
valid, multiple definitions ..)
we have now a problem, we don't know how to solve:

wenn linking the application, we will get a linker error:
undefined reference: _impure_ptr

who knows?

thanks
richard



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Re: [ECOS] any experiences with arm gcc 3.4.1 and ecos ?

[Andrew Lunn]

On Fri, Jul 30, 2004 at 01:22:35PM +0200, Richard Rauch wrote:
> Hi,
> with our actual version of gcc (v3.2) we have problems with linking. It
> seems, that in the new version the problems are fixed.
> But with this version i cannot build ecos correctly. when linking the
> application, we will get multiple definitions ( e.g. icmpstat/cyc_icmpstat).
> It looks like, that this variables are multidefined because of declarations
> in header files (e.g. icmp_var.h)
> Now we are changing Ecos Source Code.

I recommend you upgrade to a newer version of eCos. That issue was
fixed a year ago.

        Andrew

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RE: [ECOS] any experiences with arm gcc 3.4.1 and ecos ?

[Richard Rauch]

Then I'm doing something wrong with my toolchain.
I reloaded now eCos from internet again ( sh ecos-install.tcl),
downloaded the GCC-3.4.1 from gnuarm.org
and installed it to c:/cygwin/opt/ecos/gnutools/arm-elf

but there is no change!
first, i get the error "unrecognized command line option "-finit_priority",
after deleting the option in the global build options, I cannot link the
tests.
("muliple definition of 'cyg_icmpstat')

(I selected in the eCos Configuration Tool the template "Agilent
AAED2000unit" with package "Net")

you wrote, there are newer versions from eCos available. where I am able to
find?


Richard

-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org
[mailto:ecos-discuss-owner@ecos.sourceware.org]On Behalf Of Andrew Lunn
Sent: Montag, 2. August 2004 12:15
To: Richard Rauch
Cc: ecos-discuss@sources.redhat.com
Subject: Re: [ECOS] any experiences with arm gcc 3.4.1 and ecos ?


On Fri, Jul 30, 2004 at 01:22:35PM +0200, Richard Rauch wrote:
> Hi,
> with our actual version of gcc (v3.2) we have problems with linking. It
> seems, that in the new version the problems are fixed.
> But with this version i cannot build ecos correctly. when linking the
> application, we will get multiple definitions ( e.g.
icmpstat/cyc_icmpstat).
> It looks like, that this variables are multidefined because of
declarations
> in header files (e.g. icmp_var.h)
> Now we are changing Ecos Source Code.

I recommend you upgrade to a newer version of eCos. That issue was
fixed a year ago.

        Andrew

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Re: [ECOS] any experiences with arm gcc 3.4.1 and ecos ?

[Andrew Lunn]

On Mon, Aug 02, 2004 at 01:44:30PM +0200, Richard Rauch wrote:
> Then I'm doing something wrong with my toolchain.
> I reloaded now eCos from internet again ( sh ecos-install.tcl),

That will just pull eCos 2.0 which is over a year old. Take a look at

http://ecos.sourceware.org/anoncvs.html

        Andrew

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RE: [ECOS] any experiences with arm gcc 3.4.1 and ecos ?

[Richard Rauch]

I download now eCos with following command:
cvs.exe -z3 -d :pserver:anoncvs@ecos.sourceware.org:/cvs/ecos co -P ecos

problem with multiple definitions is solved, but I get following error:

/opt/ecos/gnutools/arm-elf/bin/../lib/gcc/arm-elf/3.4.1/../../../../arm-elf/
lib/libsupc++.a(vterminate.o)(.text+0x22c):../../../../gcc-3.4.1/libstdc++-v
3/libsupc++/vterminate.cc:94: undefined reference to `_impure_ptr'

richard

-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org
[mailto:ecos-discuss-owner@ecos.sourceware.org]On Behalf Of Andrew Lunn
Sent: Montag, 2. August 2004 14:49
To: Richard Rauch
Cc: ecos-discuss@sources.redhat.com
Subject: Re: [ECOS] any experiences with arm gcc 3.4.1 and ecos ?


On Mon, Aug 02, 2004 at 01:44:30PM +0200, Richard Rauch wrote:
> Then I'm doing something wrong with my toolchain.
> I reloaded now eCos from internet again ( sh ecos-install.tcl),

That will just pull eCos 2.0 which is over a year old. Take a look at

http://ecos.sourceware.org/anoncvs.html

        Andrew

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