Dear All,
Please note that after getting the sources
using git , I found wireshark directory contains patches ?
I did some googling I found that if I need
to patch wireshark I should run like the below command : 
1.  patch -p1 < patch path/name 
the configure and compile , but while checking wireshark
sources I didn’t find for packet-gsm_abis_oml.c in the path of wireshark /epan/dissectors?
does the patch abis_oml.patch(available under wireshark directory with the
delivery downloaded with git)  create it ?
Thanks,
Omar Atia