[jitsi-dev] errors with building libjitsi

Hi, while trying to build libjitsi I'm getting errors with the fmj library:
methods RTPSessionMgr.getLocalSSRC() - undefined
Buffer.FLAG_SKIP_FEC - undefined

I saw some topics on it says that wasn't an issue since version 23, but I'm
using the latest one.

error: cannot find symbol
    [javac] if ((inBuffer.getFlags() & Buffer.FLAG_SKIP_FEC) != 0)
    [javac] ^
    [javac] symbol: variable FLAG_SKIP_FEC
    [javac] location: class Buffer

error: cannot find symbol
    [javac] return ((RTPSessionMgr) manager).getLocalSSRC();
    [javac] ^
    [javac] symbol: method getLocalSSRC()
    [javac] location: class RTPSessionMgr

What can I do to make it build?