[boost] boost log to concatenate just one log file

Subject: [boost] boost log to concatenate just one log file
From: hh h (jupiter.hce_at_[hidden])
Date: 2019-01-15 04:12:38

Hi,

I added boost::log::keywords::open_mode = std::ios_base::app to the
log configuration, but it did not stop log file proliferation, every
time I started the program, it created a new log file mylog.log0000x,
how can I stop creating new logs?

Thank you.