Hi Mathias,rnrnIt did not work. Got the following error:rnrntimer.hh:101:3: error: ‘::gettimeofday’ has not been declaredrn ::gettimeofday(&msTimeStart, 0); // time in msrnrnI reinstalled cygwin and gcc version 5.3.0-5 and did the following:rnrnmake cleanbuildrnmake cleanrnmakernrnAnd still got the same error. rn