• Bi-Ruei, Chiu's avatar
    Use an un-official community collaboration version of asn1c · a247907d
    Bi-Ruei, Chiu authored
    1. It's no need to modify LTE-RRC's ASN.1 file for enabling option group
       feature in generate_asn1.
    2. It's no need to patch the C header files generated from
       LTE-RRC/S1AP/X2AP's ASN.1 in fix_asn1.
    3. It's no need to pre-process S1AP/X2AP's ASN.1 for enabling information
       object class feature by asn1tostruct.py.
    This commit requires an un-official version of asn1c which are
    collaboration of asn1c community members and `build_helper` is modified
    in this commit accordingly :
    This asn1c can also convert ASN.1 of 5G NR RRC (38.331, v15.1.0) and
    generate C files with -findirect-choice command line option without
    tweaking ASN.1 file.
    Examples for how to use this asn1c for S1AP are in S1AP files, e.g.
    s1ap_eNB_nas_procedures.c and s1ap_eNB_handler.c.
    There is an modified openair-cn (based on tag 0.5.0) with this new asn1c at :
    Basic S1AP interaction and data transfer operation between OAI eNB and
    this modified openair-cn has been tested.
    Note: Community version of asn1c is keeping evolved to provide better usage.