cmake throws errors

[MFoerd]

Following your readme while trying to make the gattlib under a debian jessie throws the following errors:

pi@raspberrypi ~/gattlib/build $ cmake -DGATTLIB_FORCE_DBUS=TRUE .. Build DBus gattlib for Bluez v5.23 -- Configuring done -- Generating done -- Build files have been written to: /home/pi/gattlib/build pi@raspberrypi ~/gattlib/build $ make [ 4%] Generate D-Bus 'org.bluez.GattService1.xml' [ 8%] Generate D-Bus 'org.bluez.Adapter1.xml' [ 12%] Generate D-Bus 'org.bluez.Device1.xml' [ 16%] Generate D-Bus 'org.bluez.GattCharacteristic1.xml' [ 20%] Generate D-Bus 'org.bluez.GattDescriptor1.xml' Scanning dependencies of target gattlib [ 25%] Building C object dbus/CMakeFiles/gattlib.dir/gattlib.c.o [ 29%] Building C object dbus/CMakeFiles/gattlib.dir/bluez5/lib/uuid.c.o /home/pi/gattlib/dbus/bluez5/lib/uuid.c: In function ‘bt_uuid_to_le’: /home/pi/gattlib/dbus/bluez5/lib/uuid.c:306:3: warning: implicit declaration of function ‘bswap_128’ [-Wimplicit-function-declaration] bswap_128(&src->value.u128, dst); ^ [ 33%] Building C object dbus/CMakeFiles/gattlib.dir/__/gattlib_common.c.o [ 37%] Building C object dbus/CMakeFiles/gattlib.dir/org-bluez-adaptater1.c.o [ 41%] Building C object dbus/CMakeFiles/gattlib.dir/org-bluez-device1.c.o [ 45%] Building C object dbus/CMakeFiles/gattlib.dir/org-bluez-gattcharacteristic1.c.o [ 50%] Building C object dbus/CMakeFiles/gattlib.dir/org-bluez-gattdescriptor1.c.o [ 54%] Building C object dbus/CMakeFiles/gattlib.dir/org-bluez-gattservice1.c.o [ 58%] Linking C shared library libgattlib.so [ 58%] Built target gattlib [ 62%] Building C object examples/ble_scan/CMakeFiles/ble_scan.dir/ble_scan.c.o [ 66%] Linking C executable ble_scan ../../dbus/libgattlib.so: undefined reference to `bswap_128' collect2: error: ld returned 1 exit status examples/ble_scan/CMakeFiles/ble_scan.dir/build.make:95: recipe for target 'examples/ble_scan/ble_scan' failed make[2]: [examples/ble_scan/ble_scan] Error 1 CMakeFiles/Makefile2:140: recipe for target 'examples/ble_scan/CMakeFiles/ble_scan.dir/all' failed make[1]: [examples/ble_scan/CMakeFiles/ble_scan.dir/all] Error 2 Makefile:149: recipe for target 'all' failed make: *** [all] Error 2

The line "Build DBus gattlib for Bluez v5.23" is also strange, whilst a Bluez 5.41 is installed on that pi.

[oliviermartin]

Sorry, I missed your issue.

Interesting about Bluez v5.23. How have you installed Bluez? Using the distribution package or manually?

[MFoerd]

I installed Bluez 5.41 manually. bluetoothd -v returns 5.41

[nojanen]

I had the same problem, and I got it solved by removing package libbluetooth-dev and adding option --enable-library to BlueZ compilation configurations. I.e.

sudo apt-get purge libbluetooth-dev
cd <bluez src>
./configure --prefix=/usr --mandir=/usr/share/man --sysconfdir=/etc --localstatedir=/var --enable-experimental --with-systemdsystemunitdir=/lib/systemd/system --with-systemduserunitdir=/usr/lib/systemd --enable-library
make
sudo checkinstall

[oliviermartin]

Thanks a lot @nojanen ! @wurstfingerzwerg I will close the issue for now, feel free to re-open it if the issue persists.