This document shows how to cross-compile bluez for an arm-processor on an i686 processor.
It can be used as starting point if you have to cross-compile bluez yourself.

date/version: 01 Feb. 2005, v0.1
author:       Marco Trudel <mtrudel@gmx.ch>

If you need help, please use the bluez-user list.

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This document assumes you have the toolchain installed in /usr/local/arm.
Version 2.95.3 is used in this description.
That means a directory called "/usr/local/arm/2.95.3/arm-linux" exists.
Bluez will be installed into /opt/bluez (feel free to choose another location).

Ensure that the crosscompile binaries are in $PATH.
For example, do: export PATH="$PATH:/usr/local/arm/2.95.3/bin"

########## 1. compile bluez-libs ##########
- extract bluez-libs and change into the directory
- configure the makefiles for cross-compiling. run:
        ./configure --build=i686-pc-linux-gnu    \
                    --host=arm-linux             \
                    --sysconfdir=/opt/bluez/etc  \
                    --prefix=/opt/bluez

- Check the output. Some interesting lines:
        checking for arm-linux-gcc... arm-linux-gcc
        checking whether the C compiler works... yes
        checking whether we are cross compiling... yes
- run "make", "make install"

The bluez libs are now intalled in /opt/bluez.
At this point, compiling the bluez-utils still fails because it doesn't
find the library (--with-bluez=/opt/bluez dosn't work for me, the error is:
/usr/local/arm/2.95.3/arm-linux/bin/ld: cannot find -lbluetooth)
To make it work, we install the bluez-libs in the arm-linux directory.
To keep that directory clean, we'll remove bluez from it later again.
If someone knows why --with-bluez doesn't work, please inform me.

Run:
        ./configure --build=i686-pc-linux-gnu    \
                    --host=arm-linux             \
                    --sysconfdir=/opt/bluez/etc  \
                    --prefix=/usr/local/arm/2.95.3/arm-linux
        make install # do not run "make"


########## 2. compile bluez-utils ##########
- extract bluez-utils and change into the directory
- configure the makefiles for cross-compiling. run:
        ./configure --build=i686-pc-linux-gnu   \
                    --host=arm-linux            \
                    --sysconfdir=/opt/bluez/etc \
                    --prefix=/opt/bluez
- run "make" and "make install"


########## 3. clean up ##########
As promised in the first step, we keep our arm-linux directory clean.
So change back into the bluez-libs folder and run:
make uninstall


######### 4. final steps, tests ##########
Please note: This mini-howto assumes you have a bluetooth enabled kernel.
If you haven't already, install it now.

Depending on your setup, you might be interested in every kb
of diskspace to save. With -s stripping and removing of unnecessary
files, it's possible to save ~350kb...

- copy /opt/bluez to your target platform.
- add "/opt/bluez/lib" to /etc/ld.so.conf and, run "ldconfig"
- run "./hcid -n" in /opt/bluez/sbin
Check the output.
If everything works well, abort hcid and start it withhout "-n".

- "/opt/bluez/bin/hcitool dev" should show you your devices
- "/opt/bluez/bin/hcitool scan" perform an inquiry scan