Hi, all: I am trying to install the multilib for 32 bit program to running in my arch linux. I follow the wiki, and uncomment the multilib in the /etc/pacman.conf as follows: [multilib] Include = /etc/pacman.d/mirrorlist And then I run my 32 bit program, it shows: ./predict_seq_ss: error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory I try run: #pacman -S libstdc++5 #pacman -Ql libstdc++5 I get the libstdc++.so.5 in the folder /lib, however, I don't see any folder like /lib32, and also my program still get the same error, it seems my program still don't find the libstdc++.so.5 libraries. Is there any one can give me some suggestions about what I missed to do? Thank you very much! Renzhi Cao Email : rcrg4@mail.missouri.eduhttps://bluprd0112.outlook.com/owa/redir.aspx?C=HgdIKZwfkkG-ZqHZQdR5l5Qjeol9gdAIEexz2Okb9KSvfYJfxGlJ7wHelHyOveteZCNx50ztf78.&URL=mailto%3arcrg4%40mail.missouri.edu http://web.missouri.edu/~rcrg4/