When i install ngspice and try to execute the command ../configure --with-x --with-readline=yes I am getting an error "configure: error: Couldn't find GNU readline headers. " Can anyone help me how to fix this, I did try to install "sudo apt-get install lib32readline8 lib32readline-dev sudo apt-get install libxaw7-dev "and still unable to resolve the error And when I give $MAKE command it isn't able to execute even though the file contains make file Git repo link that i cloned: git clone git://git.code.sf.net/p/ngspice/ngspice Website link that i referred : https://ngspice.sourceforge.io/gitaccess.html (The Pre master command also hadn't executed)

I think you need to:

sudo apt install libreadline8 libreadline-dev

I did try that sir but still I couldn't resolve the issue of GNU readline and couldn't compile ngspice, because of which I am unable to simulate any of my schematics and generate netlists

In the post above you installed the 32 bit library versions: Can anyone help me how to fix this, I did try to install "sudo apt-get install lib32readline8 lib32readline-dev sudo apt-get install libxaw7-dev "