[Buildroot] How to enable Oprofile while using external tool chain?

[Buildroot] How to enable Oprofile while using external tool chain?

[Bob Liu]

Hi, folks

It seems Oprofile package depends on no using external tool chain.

Is there any special reason of this, because I am trying to enable
Oprofile in buildroot while using external tool chain.

Any guide is welcome, Thanks.

-- 
Regards,
--Bob

[Buildroot] Fwd: How to enable Oprofile while using external tool chain?

[Benoît Mauduit]

On Wed, May 25, 2011 at 9:31 AM, Bob Liu <lliubbo@gmail.com> wrote:
> Hi, folks

Hi,

> It seems Oprofile package depends on no using external tool chain.

it refers to this :
http://permalink.gmane.org/gmane.comp.lib.uclibc.buildroot/24247

> Is there any special reason of this, because I am trying to enable
> Oprofile in buildroot while using external tool chain.

Oprofile needs GNU libiberty and libbfd libraries which are provided
by binutils.

> Any guide is welcome, Thanks.

If you want to test, i've made a patch (not very clean) and it's work
with an external toolchain.
The patch will not work with Crosstool-ng.

Regards,

--
Benoit Mauduit
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[Buildroot] How to enable Oprofile while using external tool chain?

[Thomas Petazzoni]

On Wed, 25 May 2011 15:31:39 +0800
Bob Liu <lliubbo@gmail.com> wrote:

> It seems Oprofile package depends on no using external tool chain.
> 
> Is there any special reason of this, because I am trying to enable
> Oprofile in buildroot while using external tool chain.

Yes, it's due to the fact that oprofile depends on binutils being
available for the target, and our binutils build process didn't work
when external toolchain were used. The binutils package has been
reworked since then, so maybe it could work, but I haven't tried.

You can try, and see if any problem shows up.

Regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] Fwd: How to enable Oprofile while using external tool chain?

[Thomas Petazzoni]

On Wed, 25 May 2011 10:28:20 +0200
Beno?t Mauduit <benoit.mauduit@gmail.com> wrote:

> If you want to test, i've made a patch (not very clean) and it's work
> with an external toolchain.

Your patch says that it builds a host-binutils, but it's wrong: what it
builds is binutils for the target.

Otherwise, would be great to have a proper patch that makes this
possible, and that we could merge into Buildroot.

Regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

[Buildroot] Fwd: How to enable Oprofile while using external tool chain?

[Thomas Petazzoni]

Hello Beno?t,

Please keep the Buildroot list in Cc for Buildroot-related messages
(or, alternatively, use french for send me private messages ! :-)).

On Wed, 25 May 2011 11:40:10 +0200
Beno?t Mauduit <benoit.mauduit@gmail.com> wrote:

> > Your patch says that it builds a host-binutils, but it's wrong:
> > what it builds is binutils for the target.
> 
> That's why I put quotes on "host" in my commit message.

Yes, that's what I understood from your quotes.

> > Otherwise, would be great to have a proper patch that makes this
> > possible, and that we could merge into Buildroot.
> 
> I've made this patch quickly and know it is ugly. Anyway, i will try
> to update it when i have the time and post it here.

No problem with ugly preliminary patches. I do the same for new
features / complex features. And solving that binutils problem is not
that simple.

Regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com