[ECOS] ecos size

[ECOS] ecos size

[Christoph Obermair]

hi everybody, 

what do i have to do, to get ecos smaller?
i built a library for the e7t target, only using the following packages:

  CYGPKG_HAL_ARM
  CYGPKG_HAL_ARM_E7T
  CYGPGK_HAL
  CYGPKG_KERNEL
  CYGPKG_MEMALLOC
  CYGPKG_ISOINFRA
  CYGPKG_INFRA

when compiling a kernel with a very simple c program the file a.out has a size of 380k, which is much too big i think.
what am i doing wrong?

christoph
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Re: [ECOS] ecos size

[Sebastien ANDRE]

Hi,

Maybe it's because many debug informations are presents in the ELF  file!!

Try an "arm-elf-strip a.out"  for suppress it and see the real size !!
or an "arm-elf-size a.out"

Sebastien.



Christoph Obermair wrote:

> hi everybody,
>
> what do i have to do, to get ecos smaller?
> i built a library for the e7t target, only using the following packages:
>
>   CYGPKG_HAL_ARM
>   CYGPKG_HAL_ARM_E7T
>   CYGPGK_HAL
>   CYGPKG_KERNEL
>   CYGPKG_MEMALLOC
>   CYGPKG_ISOINFRA
>   CYGPKG_INFRA
>
> when compiling a kernel with a very simple c program the file a.out has a size of 380k, which is much too big i think.
> what am i doing wrong?
>
> christoph
> --
>
> _______________________________________________
> Talk More, Pay Less with Net2Phone Direct(R), up to 1500 minutes free!
> http://www.net2phone.com/cgi-bin/link.cgi?143

[ECOS] a.out size

[Sunil Mohan Savanur]

Hello All,

I have a simple helloworld.c program
compiles using eCos under Linux (i386).
Ecos is 1.3.1 with standard
configuration.
Compiler is /usr/bin/gcc.
Linux version 6.2

The size of a.out is 567K.
Is there any way to reduce this size ?

Sunil

Re: [ECOS] a.out size

[Sebastien ANDRE]

Hello,

For reduce his size use STRIP programm for suppress all informations debug !!

for an arm platform the name likes "arm-elf-strip"

Sunil Mohan Savanur wrote:

> Hello All,
>
> I have a simple helloworld.c program
> compiles using eCos under Linux (i386).
> Ecos is 1.3.1 with standard
> configuration.
> Compiler is /usr/bin/gcc.
> Linux version 6.2
>
> The size of a.out is 567K.
> Is there any way to reduce this size ?
>
> Sunil
>
>   ------------------------------------------------------------------------
>                                Name: InterScan_Disclaimer.txt
>    InterScan_Disclaimer.txt    Type: Plain Text (text/plain)
>                            Encoding: 7bit

Re: [ECOS] a.out size

[Jesper Skov]

>>>>> "Sebastien" == Sebastien ANDRE <sebastien.andre@sxb.bsf.alcatel.fr> writes:

Sebastien> Hello, For reduce his size use STRIP programm for suppress
Sebastien> all informations debug !!

Sebastien> for an arm platform the name likes "arm-elf-strip"

That's not quite the way. Instead use arm-elf-size to see the actual
size of the executable. Strip only removes some debug info - it does
not take away the ELF metadata.

Jesper

Re: [ECOS] ecos size

[Jesper Skov]

>>>>> "Christoph" == Christoph Obermair <christoph.obermair@writeme.com> writes:

Christoph> hi everybody, what do i have to do, to get ecos smaller?  i
Christoph> built a library for the e7t target, only using the
Christoph> following packages:

Christoph>   CYGPKG_HAL_ARM CYGPKG_HAL_ARM_E7T CYGPGK_HAL
Christoph> CYGPKG_KERNEL CYGPKG_MEMALLOC CYGPKG_ISOINFRA CYGPKG_INFRA

Christoph> when compiling a kernel with a very simple c program the
Christoph> file a.out has a size of 380k, which is much too big i
Christoph> think.  what am i doing wrong?

Use arm-elf-size on the file.

Jesper

[ECOS] Ecos size

[Huguenin Frédéric]

Hello,

I want to use ecos with 500kbytes of ROM. I just want to use a 150kbytes C
program. But when I compile, the size of my executable is 900kbytes.
I would want to know how can I reduce the size of eCos. What don't I need ?
thanks

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Re: [ECOS] Ecos size

[Markus Schaber]

Hi, Huguenin,

Huguenin Frédéric <Frederic.Huguenin@he-arc.ch> wrote:

> I want to use ecos with 500kbytes of ROM. I just want to use a 150kbytes C
> program. But when I compile, the size of my executable is 900kbytes.
> I would want to know how can I reduce the size of eCos. What don't I need ?

With ecos, ask the question the other way round. Ask what you need, and
drop everything else.

Additionally, some compiler options (e. g. -Os for size optimization)
may help a little.


Regards,
Markus

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Dipl. Inf.     | Software Development GIS

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Re: [ECOS] Ecos size

[Jiri Gaisler]

Make sure you measure the executable with the 'size' utility
(e.g. sparc-elf-size app.exe), and not just looking at the
file size. Most of the file size is debugging symbols, which
are not loaded into the prom.

Jiri.

Huguenin Frédéric wrote:
> Hello,
> 
> I want to use ecos with 500kbytes of ROM. I just want to use a 150kbytes C
> program. But when I compile, the size of my executable is 900kbytes.
> I would want to know how can I reduce the size of eCos. What don't I need ?
> thanks
> 

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Re: [ECOS] Ecos size

[Edgar Grimberg]

Huguenin Frédéric wrote:
> Hello,
>
> I want to use ecos with 500kbytes of ROM. I just want to use a 150kbytes C
> program. But when I compile, the size of my executable is 900kbytes.
> I would want to know how can I reduce the size of eCos. What don't I need ?
> thanks
>
>   
Is the size of the .elf that big? If you are building a ROM application, 
you can try to "objcopy -O binary" it to a bin file and see the size of 
that.

Edgar

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