Copies of "zip" programs are provided for PocketBook ereaders.
"zip-arm-linux" is for the older 30X and 360 models, while
"zip-arm-none-linux-gnueabi" is for the newer Pro and 360+
models.  Just copy the relevant one to your device for use
(and rename it to "zip" if you like).

The binaries were built from the provided source file simply
by editing the unix/Makefile and replacing the "CC = cc" line
with "CC = arm-linux-gcc" or "CC = arm-none-linux-gnueabi-gcc".

The LICENSE file shows the license for distributing the InfoZip
programs.