Links
Before you start
- Make sure you’ve configured /etc/makepkg.conf
 - Download the package’s PKGBUILD-file from AUR (under View PKGBUILD under Package Actions on the right side)
 
Making
- Put the PKGBUILD-file in a separate folder, maybe $HOME/tmp
 - cd to the folder
 - run 
makepkg -s - a. Does it want you to install any application? Press yes
 - b. Does it need some other package from AUR? Install that first
 - You should now have a pkg.tar.xz-file. Run 
pacman -U that.file.name.pkg.tar.xz