Re: [Bluez-users] Using bluez-utils from another application

[mulata@gmx.de]

Hi Marcel,

thanks for your hint.

I've tried to compile some of the recent Versions of dbus again. But it alw=
ays fails with:

if arm-linux-gcc -DHAVE_CONFIG_H -I. -I. -I.. -I..  -I/usr/include -DDBUS_L=
OCALEDIR=3D\"/opt/devel/toolchains/arm9/arm-linux/share/locale\" -DDBUS_COM=
PILATION -DDBUS_DAEMONDIR=3D\"/opt/devel/toolchains/arm9/arm-linux/bin\" -D=
DBUS_MACHINE_UUID_FILE=3D\""/opt/devel/toolchains/arm9/arm-linux/var/lib/db=
us/machine-id"\"    -g -O2 -Wall -Wchar-subscripts -Wmissing-declarations -=
Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wcast-align -Wfloat-e=
qual -Wsign-compare -fno-common -fPIC -MT dbus-launch.o -MD -MP -MF ".deps/=
dbus-launch.Tpo" -c -o dbus-launch.o dbus-launch.c; \
        then mv -f ".deps/dbus-launch.Tpo" ".deps/dbus-launch.Po"; else rm =
-f ".deps/dbus-launch.Tpo"; exit 1; fi
dbus-launch.c: In Funktion =BBkill_bus_when_session_ends=AB:
dbus-launch.c:413: error: impossible constraint in `asm'
dbus-launch.c:414: error: impossible constraint in `asm'
dbus-launch.c:445: error: impossible constraint in `asm'
dbus-launch.c:444: error: impossible constraint in `asm'
dbus-launch.c:451: error: impossible constraint in `asm'
dbus-launch.c:475: error: impossible constraint in `asm'

Anyway this is not your problem, but any help is welcome.
Maybee my header files are too old since im using as cross compiler arm-lin=
ux-gcc 3.3.3.

Maybee I can compile an older version of dbus.
However, which dbus version needs bluez-utils at least?

Thanks
Johannes


-------- Original-Nachricht --------
> Datum: Thu, 15 May 2008 11:36:15 +0200
> Von: Marcel Holtmann <marcel@holtmann.org>
> An: BlueZ users <bluez-users@lists.sourceforge.net>
> Betreff: Re: [Bluez-users] Using bluez-utils from another application

> Hi Johannes,
> =

> > Just installed bluez-libs-2.25 and bluez-utils-2.25.
> > I know there are more recent versions avaiable but since Im developping
> for an Embedded Linux System based on ARM9 my resources are very limited
> and I was not able to compile "libdbus" which is necessary for the recent
> version of bluez.However... the installed versions are working fine. =

> =

> your version is ancient. I have the release date as January 2006 and
> this means it is over two years old. That is a full lifetime in the
> Linux world.
> =

> I am simply not buying the D-Bus cross-compilation issue. Sorry, but it
> is not that hard.
> =

> > By the way Im using a 2.2.21 Kernel, but the bluetooth related stuff is
> patched to 2.2.26.
> =

> We never had a 2.2.21 kernel with Bluetooth support.
> =

> > My goal is to use functionalities provided by hciconfig and hcitool in
> another C Program. Finally this features (e.g. Listing active local
> bluetooth devices, do a scan for remote devices, ask for available servic=
es) will
> be visualized graphically in this C programm.
> =

> You are going to duplicate all the work that has been done for now
> reason. Spending the time to cross-compile D-Bus would be better
> invested.
> =

> > So there are basically tow ways:
> > - System Calls like system("hciconfig") (which is not very handy and
> beautiful)
> > - Using the Library
> =

> Again, cross-compile D-Bus and use our D-Bus based API. It is more
> elegant than any low-level stuff will ever be.
> =

> > Concerning the second point (using Library) I did some research in
> hciconfig.c.
> > I expected that there a some higher-level functions that I can call from
> another C programm by including the necessary header files.
> > But it seems there must be also done some low-level stuff, like opening
> a HCI socket.
> =

> Yes. You always have to open a HCI raw socket to do raw packet
> manipulation.
> =

> Regards
> =

> Marcel
> =

> =

> =

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