Bluez with uclibc

Bluez with uclibc

[lkml]

Hi,

Today, I need to cross compile Bluez for arm with uclibc library into Buildroot environment. 
However, I meet some dependencies between bluez-utils package and MMU deactivation due to dBus.

Do you know a way to use Bluez with uclibc library?

Thanks in advance

Regards

---
posted at http://www.serverphorums.com
http://www.serverphorums.com/read.php?12,739510,739510#msg-739510

Re: Bluez with uclibc

[Rob Landley]

On 07/08/2013 03:06:15 AM, lkml@serverphorums.com wrote:
> Hi,
> 
> Today, I need to cross compile Bluez for arm with uclibc library into  
> Buildroot environment.
> However, I meet some dependencies between bluez-utils package and MMU  
> deactivation due to dBus.
> 
> Do you know a way to use Bluez with uclibc library?

Dunno about buildroot, but if you just want to statically link  
something against uClibc on arm, you could grab either the cross or  
native "armv5l" compiler from

   http://landley.net/aboriginal/bin

and add its "bin" subdirectory to your $PATH. I just updated that  
toolchain so it's using the 3.10 headers (yes, with the patch for  
http://lkml.indiana.edu/hypermail/linux/kernel/1305.2/01452.html the  
kernel developers never did fix), and it's the last release version of  
uClibc (from a year and change ago, but that's uClibc for you).

As for fixing dependencies beyond "building against uClibc", that's a  
buildroot question. They have their own mailing list...

Rob

Bluez with uclibc

[Julien COUVRAND]

Hi,

I am new to Bluez

Today, I need to cross compile Bluez for arm with uclibc library into Buildroot environment. 
However, I meet some dependencies between bluez-utils package and MMU deactivation due to dBus.

Do you know a way to use Bluez with uclibc library?

Thanks in advance

Regards

Julien

Re: Bluez with uclibc

[Marcel Holtmann]

Hi Julien,

> Today, I need to cross compile Bluez for arm with uclibc library into Buildroot environment. 
> However, I meet some dependencies between bluez-utils package and MMU deactivation due to dBus.
> 
> Do you know a way to use Bluez with uclibc library?

you need to be more specific. I know from projects successfully building BlueZ with uclibc in the past, but I am not doing such thing on a daily basis. So things might have changed. What are the logs or errors you see?

Regards

Marcel

RE: Bluez with uclibc

[Julien COUVRAND]

Hi Marcel,

Sure.
As soon as i compile Buildroot deactivating MMU dependencies into Config.in=
 from bluez-utils package such as:

--
config BR2_PACKAGE_BLUEZ_UTILS
	bool "bluez-utils"
	depends on !BR2_avr32
	depends on BR2_USE_WCHAR # libglib2
	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus, alsa-lib
	# depends on BR2_USE_MMU # dbus
	select BR2_PACKAGE_DBUS
	select BR2_PACKAGE_LIBGLIB2
	help
	  bluez utils
--

I have got following compilation errors:

--
../dbus/.libs/libdbus-internal.a(libdbus_internal_la-dbus-sysdeps-util-unix=
.o): In function `_dbus_become_daemon':
dbus-sysdeps-util-unix.c:(.text+0x530): undefined reference to `fork'
../dbus/.libs/libdbus-internal.a(libdbus_internal_la-dbus-spawn.o): In func=
tion `_dbus_spawn_async_with_babysitter':
dbus-spawn.c:(.text+0xe38): undefined reference to `fork'
dbus-spawn.c:(.text+0xea0): undefined reference to `fork'
collect2: error: ld returned 1 exit status
make[3]: *** [dbus-daemon] Error 1
make[3]: *** Waiting for unfinished jobs....
../dbus/.libs/libdbus-internal.a(libdbus_internal_la-dbus-sysdeps-util-unix=
.o): In function `_dbus_become_daemon':
dbus-sysdeps-util-unix.c:(.text+0x530): undefined reference to `fork'
collect2: error: ld returned 1 exit status
make[3]: *** [dbus-daemon-launch-helper] Error 1
--

So, currently, using uclibc for bluez, without MMU activation, I can't comp=
ile Buildroot due dBus and the "fork".


Julien


Julien COUVRAND
MOPI - 8540 SWPF Object Leader
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-----Original Message-----
From: Marcel Holtmann [mailto:marcel@holtmann.org]=20
Sent: lundi 8 juillet 2013 21:03
To: Julien COUVRAND
Cc: linux-bluetooth@vger.kernel.org
Subject: Re: Bluez with uclibc

Hi Julien,

> Today, I need to cross compile Bluez for arm with uclibc library into Bui=
ldroot environment.=20
> However, I meet some dependencies between bluez-utils package and MMU dea=
ctivation due to dBus.
>=20
> Do you know a way to use Bluez with uclibc library?

you need to be more specific. I know from projects successfully building Bl=
ueZ with uclibc in the past, but I am not doing such thing on a daily basis=
. So things might have changed. What are the logs or errors you see?

Regards

Marcel

Re: Bluez with uclibc

[Marcel Holtmann]

Hi Julien,

please do not top post on this mailing list.

> Sure.
> As soon as i compile Buildroot deactivating MMU dependencies into Config.in from bluez-utils package such as:
> 
> --
> config BR2_PACKAGE_BLUEZ_UTILS
> 	bool "bluez-utils"
> 	depends on !BR2_avr32
> 	depends on BR2_USE_WCHAR # libglib2
> 	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus, alsa-lib
> 	# depends on BR2_USE_MMU # dbus
> 	select BR2_PACKAGE_DBUS
> 	select BR2_PACKAGE_LIBGLIB2
> 	help
> 	  bluez utils
> --
> 
> I have got following compilation errors:
> 
> --
> ../dbus/.libs/libdbus-internal.a(libdbus_internal_la-dbus-sysdeps-util-unix.o): In function `_dbus_become_daemon':
> dbus-sysdeps-util-unix.c:(.text+0x530): undefined reference to `fork'
> ../dbus/.libs/libdbus-internal.a(libdbus_internal_la-dbus-spawn.o): In function `_dbus_spawn_async_with_babysitter':
> dbus-spawn.c:(.text+0xe38): undefined reference to `fork'
> dbus-spawn.c:(.text+0xea0): undefined reference to `fork'
> collect2: error: ld returned 1 exit status
> make[3]: *** [dbus-daemon] Error 1
> make[3]: *** Waiting for unfinished jobs....
> ../dbus/.libs/libdbus-internal.a(libdbus_internal_la-dbus-sysdeps-util-unix.o): In function `_dbus_become_daemon':
> dbus-sysdeps-util-unix.c:(.text+0x530): undefined reference to `fork'
> collect2: error: ld returned 1 exit status
> make[3]: *** [dbus-daemon-launch-helper] Error 1
> --
> 
> So, currently, using uclibc for bluez, without MMU activation, I can't compile Buildroot due dBus and the "fork".

you might want to check with the D-Bus people since this is not a BlueZ issue.

Regards

Marcel

bluez with uclibc

[arjun rath]

Hi,

Can somebody please tell how to cross compile bluez for arm with
uclibc library.with glib i am to cross compile but my whole
application and RFS is builded with uclibc so i need bluez with uclibc
compiled.

Thanks in advance

Regards

Arjun