Hello, I generated some Boost librairies with bjam, and I get many symbolic links. For date_time : libboost_date_time-gcc41-mt-1_39.a libboost_date_time-gcc41-mt-1_39.so -> libboost_date_time-gcc41-mt-1_39.so.1.39.0 libboost_date_time-gcc41-mt-1_39.so.1.39.0 libboost_date_time-gcc41-mt.a -> libboost_date_time-gcc41-mt-1_39.a libboost_date_time-gcc41-mt.so -> libboost_date_time-gcc41-mt-1_39.so.1.39.0 Why don't I just get the .a and .so ? Why these 3 symbolic links ? And why do the original files have a so complicated name for the .so, with the release version mentionned twice ? Isn't it possible to just have : libboost_date_time-gcc41-mt-1_39.a libboost_date_time-gcc41-mt-1_39.so Thanks for help. I don't know what to do of these symbolic links. Note : I am a newbie in Linux.