Trying to install Gtkmm 4 in a Debian 11 box I do this : sudo apt install libgtkmm-4.0-dev
But then I get this error : Unable to locate package libgtkmm-4.0-dev What am I doing wrong?
Trying to install Gtkmm 4 in a Debian 11 box I do this : sudo apt install libgtkmm-4.0-dev
But then I get this error : Unable to locate package libgtkmm-4.0-dev What am I doing wrong?