Collect2: Error

I'm trying to compile this on Mint 18 (Ubuntu 16.04) and I get this error:

hidclient.c:(.text+0x11c): undefined reference to sdp_data_alloc_with_length' /tmp/ccKpSfSH.o: In functionmain':
hidclient.c:(.text.startup+0x7c7): undefined reference to `ba2str'
collect2: error: ld returned 1 exit status

Any help would be appreciated.

[zepatrik]

I get this too and some more undefined references (Ubuntu Gnome 16.10)

[zepatrik]

FIX: use the compiler command from the makefile:

gcc -o hidclient hidclient.c -O2 -lbluetooth -Wall

I don't see any difference except another order but this seems to fix the problem