i want to install libcoap in my ubuntu os. but every time i write "
sudo apt-get install libcoap-dev
it gives error that libcoap is not found.
E: unable to locate package libcoap-dev
similarly i made a user defined library, it gives same error for it. I tried to upgrade openssl version but same error for installing libraries. i have placed folder containing lib files on desktop and i am working in desktop directory, still it gives same statement. what to do?? where i need to place my library files for installation.
sudo apt-get install libpcap-dev