I executed the minimal building directions of xcape:
$ sudo apt-get install git gcc make pkg-config libx11-dev libxtst-dev libxi-dev
$ mkdir xcape
$ cd xcape
$ git clone https://github.com/alols/xcape.git .
$ make
But when I press xcape it says xcape: command not found. It errors even when I'm in the xcape folder with a program that seems to be called xcape inside it. Why is this?