Stlink install in linux problems

#Operating system: ubuntu 16.04 LTS
#Stlink tools version:  773d05a  on Jul 1, 2017 ,  https://github.com/texane/stlink.git
I build st-link programs from source. Everythink is OK. After installing "sudo make install", I ran the program "st-info" (or other st-xxxx program) and this is output:

solution：cd /stlink/build/Release && export LD_LIBRARY_PATH=$PWD/_install/usr/local/lib


Detalied description：https://github.com/texane/stlink/issues/478