Some may have a better way to do it, but this is the only one I know ...
Install the fontconfig package (no X deps).
According to man fc-cache :
"fc-cache scans the font directories on the system and builds font information cache files for applications using fontconfig for their font handling."
Create any subdir for your fonts in /usr/share/fonts (not mandatory but useful)
System-wide : # mkdir -p /usr/share/fonts/greatvibes
User only : mkdir ~/.fonts
Copy your font files in the appropriate folder and "register" them in the system with :
# fc-cache -f -v
Hope it helped.