Trying to install esint package

I am trying to install the esint package for latex to allow me to use symbols such as the double closed integral (oiint).

I have downloaded the zip archive from ctan, and extracted it.

In the terminal I ran the following commands:

latex esint.ins
(generated esint.sty, uesint.fd, esint10.mf, mathint.mf, bigint.mf)

I copied the above 5 files to the root of my texstudio project folder. ie; the same directory where my .tex files are which I am editing and compiling with texstudio.

I then ran:

mf 'mode=localfont; input esint10.mf'
(generated esint10.tfm)

I also copied this file to the root folder of my texstudio project.

In my tex file I added usepackage{esint}.

On compile, texstudio just says process exited with errors. If I remove the line usepackage{esint} then this error disappears.

I think I may have put the files in the wrong locations – perhaps only the .sty file should be in the root folder of my texstudio project folder?

What have I done wrong?