De-installing the package helped!
Artur
Am 18.01.2016 um 20:40 schrieb oleg_komashko(a)ukr.net:
 In December I did exactly what Marcin wrote,
 i.e. deleted libopenblas-base; it helped,
 I've just recompiled the newest git:
 no warnings. The only difference:
 my Ubuntu is 32 bit
 Oleh
 18 січня 2016, 21:15:09, від "Artur Tarassow"
 <artur.tarassow(a)googlemail.com <mailto:artur.tarassow@googlemail.com>>:
     Thanks, Oleh. Totally missed it. But actually it's weird that it
     occurs now.
     Artur
     Am 18. Januar 2016 20:12:16 MEZ, schrieb oleg_komashko(a)ukr.net
     <mailto:oleg_komashko@ukr.net>:
         I had the same problem at the end of December
         look at
         
http://lists.wfu.edu/pipermail/gretl-users/2015-December/011464.html
         and other messages from the same thread
         Oleh
         18 січня 2016, 19:37:14, від "Artur T."
         <artur.tarassow(a)googlemail.com
         <mailto:artur.tarassow@googlemail.com>>:
             Dear Jack and Allin,
             this morning I've got the following note when opening latest cvs gretl
             on my ubuntu machine.
             "gretl is built using OpenMP, but is linked against
             OpenBLAS parallelized via pthreads. This combination
             of threading mechanisms is not recommended. Ideally,
             OpenBLAS should also use OpenMP."
             Honestly, I am not sure what's the best to do now.
             Best,
             Artur
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