[Bluez-devel] cross-compiling bluez-utils.3.1

[Bluez-devel] cross-compiling bluez-utils.3.1

[Robert Wlaschin]

Hi,

I seem to be having problems with the latest version of bluez-utils.  It seems
that dbus is a required component of the 3.1 release; which isn't cross-compile
friendly (the dbus build complains about cross-compiling) -- a previous version
of bluez-utils (2.21) is.  In the 2.21 release there was an option to compile
without dbus, is there a work around for the 3.1/if so, how?  If not, any
suggestions about cross-compiling the stock bluez-utils.3.1 (including dbus as
necessary) for an ARM processor?

Robert


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Re: [Bluez-devel] cross-compiling bluez-utils.3.1

[Mayank Batra]

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Hi Robert,

On 6/28/06, Robert Wlaschin <robertw@healthhero.com> wrote:

> I seem to be having problems with the latest version of bluez-utils.  It
> seems
> that dbus is a required component of the 3.1 release; which isn't
> cross-compile
> friendly (the dbus build complains about cross-compiling) -- a previous
> version
> of bluez-utils (2.21) is.  In the 2.21 release there was an option to
> compile
> without dbus, is there a work around for the 3.1/if so, how?  If not, any
> suggestions about cross-compiling the stock bluez-utils.3.1 (including
> dbus as
> necessary) for an ARM processor?
>
> Robert


Actually the latest bluez-utils are not even compiling on PC. It complains
that dbus package is not present.

Regards,
Mayank

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Re: [Bluez-devel] cross-compiling bluez-utils.3.1

[Robert Wlaschin]

Mayank Batra <mayankbatra <at> gmail.com> writes:

> 
> 
> Hi Robert,
> On 6/28/06, Robert Wlaschin <robertw <at> healthhero.com> wrote:
> I seem to be having problems with the latest version of bluez-utils.  It
> seemsthat dbus is a required component of the 
> 3.1 release; which isn't cross-compilefriendly (the dbus build complains about
> cross-compiling) -- a previous versionof bluez-utils (2.21) is.  In the 2.21
> release there was an option to compilewithout dbus, is there a work around for
> the 3.1/if so, how?  If not, anysuggestions about cross-compiling the stock
> bluez-utils.3.1 (including dbus asnecessary) for an ARM processor?Robert
>  
> Actually the latest bluez-utils are not even compiling on PC. It complains
> that dbus package is not present.
>  
> Regards,
> Mayank
> 
> 
> 
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> 
> _______________________________________________
> Bluez-devel mailing list
> Bluez-devel <at> lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel
> 

Mayank,

Thanks for the response.  There are some posts in the forum about problems with
cross-compiling.  

To get past the dbus problem, if you don't already have the dbus source you'll
need to get it from http://www.freedesktop.org/wiki/Software/dbus, after that
you'll need to get a new version of bluez-utils-3.1/acinclude.m4 from the bluez
CVS -- there is a bug in this file that looks for the incorrect dbus libs.  
After you have updated that file follow the instructions in INSTALL for 
rebuilding the configuration script.

As a side note you may need to add PKG_CONFIG_PATH=$(BLUEZ_LIBS_BUILD_DIR) to
your command-line when running ./configuration (BLUEZ_LIBS_BUILD_DIR is a make
variable that needs to point to your bluez-libs-3.1 directory).

Please search the group for more information concerning this issue.  I hope this
helps.

Robert



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Re: [Bluez-devel] cross-compiling bluez-utils.3.1

[Mayank Batra]

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Hi Robert,

On 6/28/06, Robert Wlaschin <robertw@healthhero.com> wrote:
>
> To get past the dbus problem, if you don't already have the dbus source
> you'll
> need to get it from http://www.freedesktop.org/wiki/Software/dbus, after
> that


I've got the DBus sources, and it is working fine.

you'll need to get a new version of bluez-utils-3.1/acinclude.m4 from the
> bluez
> CVS -- there is a bug in this file that looks for the incorrect dbus libs.


I think that the CVS is down, can you please send it to me by mail?

Thanks.

Mayank

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Re: [Bluez-devel] cross-compiling bluez-utils.3.1

[Marcel Holtmann]

Hi Robert,

> I seem to be having problems with the latest version of bluez-utils.  It seems
> that dbus is a required component of the 3.1 release; which isn't cross-compile
> friendly (the dbus build complains about cross-compiling) -- a previous version
> of bluez-utils (2.21) is.  In the 2.21 release there was an option to compile
> without dbus, is there a work around for the 3.1/if so, how?  If not, any
> suggestions about cross-compiling the stock bluez-utils.3.1 (including dbus as
> necessary) for an ARM processor?

the D-Bus library is mandatory now. Hence the new major version number.

Regards

Marcel



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Re: [Bluez-devel] cross-compiling bluez-utils.3.1

[Steve Finney]

> the D-Bus library is mandatory now. Hence the new major version number.

> Regards

> Marcel

D-Bus seems like a useful tool for desktops, but possibly overkill 
and/or unnecessary for embedded systems. Also, as noted before, D-Bus
will not build out of the box for cross-compiled systems such as ARM.
Since a lot of embedded systems use Bluetooth, this seems problematic.

What exactly does D-Bus supply in terms of necessary/useful functionality for
Bluetooth, and how difficult would it be to work around having to use it? (I
have not taken a serious look at the new release yet, as I'm still working
on a basic understanding of the 2.21 version).
sf






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Re: [Bluez-devel] cross-compiling bluez-utils.3.1

[Marcel Holtmann]

Hi Steve,

> D-Bus seems like a useful tool for desktops, but possibly overkill 
> and/or unnecessary for embedded systems. Also, as noted before, D-Bus
> will not build out of the box for cross-compiled systems such as ARM.
> Since a lot of embedded systems use Bluetooth, this seems problematic.

I am aware of embedded systems and a long time this was the reason for
keeping D-Bus optional. In the long run it is not worth it and it would
only increase the complexity. Devices like the Nokia 770 proved that we
can handle D-Bus in the embedded area and if there are problems, they
must be addressed in D-Bus.

> What exactly does D-Bus supply in terms of necessary/useful functionality for
> Bluetooth, and how difficult would it be to work around having to use it? (I
> have not taken a serious look at the new release yet, as I'm still working
> on a basic understanding of the 2.21 version).

D-Bus is a message bus (IPC based). Something like RPC and it makes
writing client applications a lot easier. The BlueZ D-Bus API provides a
clean interface to basic Bluetooth tasks. You don't need any knowledge
about HCI anymore. You can also write your application in C, C++, Java,
Python, C# etc. and they don't need to be put under GPL.

Trying to implement your own message bus to avoid the D-Bus dependency
is not worth it. We considered it in the beginning, but this would
increase the complexity without any real benefit.

Regards

Marcel



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Re: [Bluez-devel] cross-compiling bluez-utils.3.1

[ifq]

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hello,marcel:
I have a stupid question:can Bluez 3.1 run on ARM system?
I cross-compiled the 3.1.and got lots of error.
is there anyone have success cross-compile 3.1 to ARM?could you give me some
advice?
thanks very much.

2006/6/29, Marcel Holtmann <marcel@holtmann.org>:
>
> Hi Steve,
>
> > D-Bus seems like a useful tool for desktops, but possibly overkill
> > and/or unnecessary for embedded systems. Also, as noted before, D-Bus
> > will not build out of the box for cross-compiled systems such as ARM.
> > Since a lot of embedded systems use Bluetooth, this seems problematic.
>
> I am aware of embedded systems and a long time this was the reason for
> keeping D-Bus optional. In the long run it is not worth it and it would
> only increase the complexity. Devices like the Nokia 770 proved that we
> can handle D-Bus in the embedded area and if there are problems, they
> must be addressed in D-Bus.
>
> > What exactly does D-Bus supply in terms of necessary/useful
> functionality for
> > Bluetooth, and how difficult would it be to work around having to use
> it? (I
> > have not taken a serious look at the new release yet, as I'm still
> working
> > on a basic understanding of the 2.21 version).
>
> D-Bus is a message bus (IPC based). Something like RPC and it makes
> writing client applications a lot easier. The BlueZ D-Bus API provides a
> clean interface to basic Bluetooth tasks. You don't need any knowledge
> about HCI anymore. You can also write your application in C, C++, Java,
> Python, C# etc. and they don't need to be put under GPL.
>
> Trying to implement your own message bus to avoid the D-Bus dependency
> is not worth it. We considered it in the beginning, but this would
> increase the complexity without any real benefit.
>
> Regards
>
> Marcel
>
>
>
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job
> easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Bluez-devel mailing list
> Bluez-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>

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Re: [Bluez-devel] cross-compiling bluez-utils.3.1

[Rahul Tank]

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On 7/19/06, ifq <ifqqfi@gmail.com> wrote:
>
> hello,marcel:
> I have a stupid question:can Bluez 3.1 run on ARM system?
> I cross-compiled the 3.1.and got lots of error.
> is there anyone have success cross-compile 3.1 to ARM?could you give me
> some advice?
> thanks very much.
>


  Yes, U can . I myself did it using scratchbox for
cross-compilation.Itworked fine.

 regards,
   rahul

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