The ICEpdf distribution bundle contains "./libs-source" folder that contains the source for the core and viewer modules. This was intended for incorporation with a developers IDE and was not designed for building the library from source.
Building the ICEpdf library from source first requires that the libraries source is checked out using a SVN client from [http://anonsvn.icesoft.org/repo/icepdf/trunk/icepdf/. Once downloaded the project can be build using Gradle or Maven.
For specific instructions click on one of the build options below.