undefined symbol: sdp_extract_pdu about bluecove HOT 5 OPEN

This seems to be an issue with the order of link arguments. Putting 
"-lbluetooth" further down in build.xml resolves this issue.

I encountered the same problem and what u suggest "Putting -bluetooth further 
down" cannot resolve the problem.

I had the same issue. Putting -L<lib path> -lbluetooth arguments last when 
linking solved the problem (using custom makefile to build the lib).

Even after moving the parameter to the end, I still get this:

compile-native-lib:
     [echo] compiling  .c -> .o
    [apply] /home/inventmarine/bluecove/bluecove-gpl-2.1.0/src/main/c/BlueCoveBlueZ_SDPServer.c: In function ‘bluecove_sdp_extract_pdu’:
    [apply] /home/inventmarine/bluecove/bluecove-gpl-2.1.0/src/main/c/BlueCoveBlueZ_SDPServer.c:94:47: warning: assignment from incompatible pointer type [enabled by default]
     [echo] linking    .o -> libbluecove_arm.so
     [echo] ldd libbluecove_arm.so
     [exec]     libbluetooth.so.3 => /usr/lib/arm-linux-gnueabihf/libbluetooth.so.3 (0xb6ee6000)
     [exec]     libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0xb6e01000)
     [exec]     /lib/ld-linux-armhf.so.3 (0xb6f21000)
     [exec] 
     [exec]     Version information:
     [exec]     /usr/lib/arm-linux-gnueabihf/libbluetooth.so.3:
     [exec]         ld-linux-armhf.so.3 (GLIBC_2.4) => /lib/ld-linux-armhf.so.3
     [exec]         libc.so.6 (GLIBC_2.7) => /lib/arm-linux-gnueabihf/libc.so.6
     [exec]         libc.so.6 (GLIBC_2.15) => /lib/arm-linux-gnueabihf/libc.so.6
     [exec]         libc.so.6 (GLIBC_2.4) => /lib/arm-linux-gnueabihf/libc.so.6
     [exec]     /lib/arm-linux-gnueabihf/libc.so.6:
     [exec]         ld-linux-armhf.so.3 (GLIBC_2.4) => /lib/ld-linux-armhf.so.3
     [exec]         ld-linux-armhf.so.3 (GLIBC_PRIVATE) => /lib/ld-linux-armhf.so.3
     [copy] Copying 1 file to /home/inventmarine/bluecove/bluecove-gpl-2.1.0/src/main/resources
     [copy] Copying 1 file to /home/inventmarine/bluecove/bluecove-gpl-2.1.0/target/classes

native-lib:


Also, that is how my build.xml looks like:

 <apply executable="${CC}" parallel="true" failonerror="true">
             <arg value="-shared"/>
             <!--
                This is used on Build Server to create Universal binary
                 ldd libbluecove.so
                     linux-gate.so.1 =>
                     libbluetooth.so =>
                The directory should contain libbluetooth.so binary edited to remove version from name e.g.
                   libbluetooth.so.2 -> libbluetooth.so
                   libbluetooth.so.3 -> libbluetooth.so
             -->
             <arg value="-nodefaultlibs"/>
             <arg value="-o"/>
             <arg value="${target}/${library_name}"/>
             <fileset dir='${build_native}' includes="*.o"/>
             <srcfile/>


             <arg value="-L${libs-universal}"/>
             <arg value="-lbluetooth"/>
        </apply>

I've also tried:
<arg value="-nodefaultlibs"/>
             <arg value="-L${libs-universal}"/>
             <arg value="-lbluetooth"/>

             <arg value="-o"/>
             <arg value="${target}/${library_name}"/>
             <fileset dir='${build_native}' includes="*.o"/>
             <srcfile/>