c++ - Installing NetworkManager leaves Ubuntu 14.04 without Internet - Ask Ubuntu

i'm trying use networkmanager library c++ library in order add wifi support in linux app. using ubuntu 14.04 lts.

i've tried nmcli through command line, calling app not stable enough , prefer use pure c++ library.

i downloaded networkmanager version 1.4.2 "stable". after executing autogen.sh, , make & make install, process ends successfully.

when restart machine, though, can't access internet. neither wired cable or wifi dongle.

is normal? should if want use library in app?

another problem detected in settings/network there following message "the system network services not compatible verison".

i can't use nmcli through command line anymore. errors appears "nmcli: error while loading shared libraries: libnm.so.0: cannot open shared object file: no such file or directory"

edit: nmcli solved using post https://stackoverflow.com/questions/13428910/how-to-set-the-environmental-variable-ld-library-path-in-linux. needed add library path "/usr/local/lib.

now can scan wifi nmcli in command line, if try connect, message appears: "error: connection activation failed:(53) wi-fi network not found"

any appreciated.