crosscompiling udev

crosscompiling udev

[Jonas Meyer]

Hi.
I just tried to crosscompile udev and noticed that in the Makefile the
CROSS_COMPILE variable is emptied. when removing that line it works. Is
there a reason for that behaviour or could that be changed in the next
version?
please reply to my email address as i'm not subscribed to the
mailinglist.
Thanks, Jonas


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Re: crosscompiling udev

[Greg KH]

On Tue, Aug 22, 2006 at 02:47:37AM +0200, Jonas Meyer wrote:
> Hi.
> I just tried to crosscompile udev and noticed that in the Makefile the
> CROSS_COMPILE variable is emptied. when removing that line it works. Is
> there a reason for that behaviour or could that be changed in the next
> version?

What exactly did you use on the command line to build udev in this
manner?  You should be able to specify the CROSS_COMPILE variable on the
build line, and have it work properly.

thanks,

greg k-h

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Re: crosscompiling udev

[Greg KH]

On Tue, Aug 22, 2006 at 05:16:54AM +0200, Jonas Meyer wrote:
> Am Montag, den 21.08.2006, 19:18 -0700 schrieb Greg KH:
> > On Tue, Aug 22, 2006 at 02:47:37AM +0200, Jonas Meyer wrote:
> > > Hi.
> > > I just tried to crosscompile udev and noticed that in the Makefile the
> > > CROSS_COMPILE variable is emptied. when removing that line it works. Is
> > > there a reason for that behaviour or could that be changed in the next
> > > version?
> > 
> > What exactly did you use on the command line to build udev in this
> > manner?  You should be able to specify the CROSS_COMPILE variable on the
> > build line, and have it work properly.
> I used this: CROSS_COMPILE=arm-uclibc-linux- make
> and it builds just fine. but when i use file to look at the result:
>  file udevd
> udevd: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for
> GNU/Linux 2.4.1, dynamically linked (uses shared libs), for GNU/Linux
> 2.4.1, not stripped
> 
> when I remove the CROSS_COMPILE> line in the Makefile I get arm binaries,instead.

Try:
	make CROSS_COMPILE=arm-uclibc-linux-
instead.

And please don't take email threads off of the mailing list, it's rude
to the rest of the members, and the archives.

thanks,

greg k-h

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Re: crosscompiling udev

[Jonas Meyer]

Hello
make CROSS_COMPILE=arm-uclibc-linux-
works fine. 
Thanks for pointing this out to me - but I don't understand why. Please
give me an idea why 
CROSS_COMPILE=arm-uclibc-linux- make
doesn't work.
Thanks, Jonas


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Re: crosscompiling udev

[Vassilis Virvilis]

Jonas Meyer wrote:
> Hello
> make CROSS_COMPILE=arm-uclibc-linux-
> works fine. 

this declares CROSS_COMPILE as a make variable

> Thanks for pointing this out to me - but I don't understand why. Please
> give me an idea why 
> CROSS_COMPILE=arm-uclibc-linux- make
> doesn't work.

Now this is a CROSS_COMPILE=arm-uclibc-linux- shell variable. Make may
read it or not. IIRC there is an option that forces make to import the
hole environment.

        .bill

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Re: crosscompiling udev

[Kay Sievers]

On Tue, Aug 22, 2006 at 05:51:59PM +0200, Jonas Meyer wrote:
> Hello
> make CROSS_COMPILE=arm-uclibc-linux-
> works fine. 

Arguments to make that are variables, overwrite the ones
from the Makefile:
  http://www.gnu.org/software/make/manual/html_node/Overriding.html#Overriding

> Thanks for pointing this out to me - but I don't understand why. Please
> give me an idea why 
> CROSS_COMPILE=arm-uclibc-linux- make
> doesn't work.

The environment variable, is imported:
  http://www.gnu.org/software/make/manual/html_node/Environment.html#Environment
but cleared by the Makefile for some reason, I don't know. We
can probably remove that empty assignment.

Kay

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