I managed to build BlueZ 5.50 by using Ubuntu 18.04. I did the cross compilation for the code for the armhf architecture. I copied the build folder to the embedded Ubuntu board. I then run "make install" but get errors: checking whether the C compiler works... no configure: error: in `/home/user/bluez-5.50': configure: error: C compiler cannot create executables See `config.log' for more details Makefile:3310: recipe for target 'config.status' failed make: *** [config.status] Error 77 I then tried to manually install the build on the board. I tried "make install" on my VirtualBox Ubuntu Desktop. So I used the similar way to install the build(all of the folders are already created): sudo /bin/bash ./libtool --mode=install /usr/bin/install -c client/bluetoothctl monitor/btmon tools/rctest tools/l2test tools/l2ping tools/bccmd tools/bluemoon tools/hex2hcd tools/mpris-proxy tools/btattach '/usr/bin' sudo /bin/bash ./libtool --mode=install /usr/bin/install -c src/bluetoothd obexd/src/obexd '/usr/lib/bluetooth' sudo /usr/bin/install -c profiles/cups/bluetooth /usr/lib/cups/backend/bluetooth sudo /usr/bin/install -c -m 644 src/bluetooth.conf '/etc/dbus-1/system.d' sudo /usr/bin/install -c -m 644 obexd/src/org.bluez.obex.service '/usr/share/dbus-1/services' sudo /usr/bin/install -c -m 644 src/org.bluez.service '/usr/share/dbus-1/system-services' sudo /usr/bin/install -c -m 644 tools/rctest.1 tools/l2ping.1 tools/bccmd.1 tools/btattach.1 tools/hid2hci.1 '/usr/share/man/man1' sudo /usr/bin/install -c -m 644 src/bluetoothd.8 '/usr/share/man/man8' sudo /usr/bin/install -c -m 644 tools/97-hid2hci.rules '/lib/udev/rules.d' sudo /usr/bin/install -c -m 644 src/bluetooth.service '/lib/systemd/system' sudo /usr/bin/install -c -m 644 obexd/src/obex.service '/usr/lib/systemd/user' sudo /bin/bash ./libtool --mode=install /usr/bin/install -c tools/hid2hci '/lib/udev' My questions are: 1. How to install the build on the board? "make install" doesn't work. 2. How can I tell if the build is installed correctly? 3. How can I verify if the BlueZ 5.50 works or not? 4. I tried "sudo btattach -B /dev/ttymxc2 -S 921600", but btattach doesn't exit: Attaching Primary controller to /dev/ttymxc2 Switched line discipline from 0 to 15 Device index 0 attached 5. I also tried "sudo /usr/libexec/bluetooth/bluetoothd". There is no output. "bluetoothd" doesn't exit either. By the way, "bluetoothd" doesn't run after the build is installed. So I try to manually run it. 6. By running "/usr/libexec/bluetooth/bluetoothd -v", I got "5.50". By running "/usr/libexec/bluetooth/bluetoothd -d", I got: D-Bus setup failed: Connection ":1.50" is not allowed to own the service "org.bluez" due to security policies in the configuration file Thanks in advance!
