Dear all, After an upgrade of debian testing (yesterday) I have been unable to compile dynare. The culprit seems to be the new version of flex (2.6.0-11). Houtan can you check if this is a bug in flex or if we have to change something on our side? I suppose you may have the same issue with homebrew... For those who upgraded flex to 2.6.0-11 you will need to downgrade flex: ~$ sudo apt-get remove flex libfl-dev ~$ sudo apt-get install libfl-dev=2.5.39-8+b1 ~$ sudo apt-get install flex=2.5.39-8+b1 You should also (temporarily) prevent future upgrades for these packages : ~$ sudo apt-mark hold libfl-dev flex If you did not upgrade debian, you may also want to apply the last step (until we understand the problem). Best, Stéphane. -- Stéphane Adjemian Université du Maine, Gains & Cepremap