This was a addon for Document Viewer which provided additional fonts.

Our MuPDF patches to support this no longer apply cleanly, so support for the font pack was dropped.

1. Have Android SDK "tools", "platform-tools", and "build-tools" directories in your PATH (http://developer.android.com/sdk/index.html)
2. Open the Android SDK Manager (shell command: android).
   Expand the Tools directory and select "Android SDK Build-tools" newest version.
   Expand the Extras directory and install "Android Support Repository"
   Select everything for the newest SDK
3. Export ANDROID_HOME pointing to your Android SDK
4. Execute ./gradlew build

The Academy fonts: http://lizard.phys.msu.su/home/compu_sci/oldfonts-eng.html

The Academy Old font pack: http://lizard.phys.msu.su/home/compu_sci/oldfonts-eng.html

The FreeFonts font pack: http://www.gnu.org/software/freefont/

Free URW symbol fonts: http://www.gnu.org/software/freefont/sources/resources.html#URW http://svn.ghostscript.com/ghostscript/trunk/ghostpdl/urwfonts/

Free NimbusL fonts: http://www.gnu.org/software/freefont/sources/resources.html#URW http://svn.ghostscript.com/ghostscript/trunk/ghostpdl/urwfonts/

DejaVu fonts: http://dejavu-fonts.org/

Linux Libertine and Biolinum fonts: http://linuxlibertine.org/