Clean ran for a project will clean only the project files.
Clean-all ran for a project will clean also the library files on which the project depends.
The clean commands will only remove specific files and directories.
The top Makefile allows several options(per suggestion from jameyhicks):
make fmcomms1.zed will run "make all" in projects/fmcomms1/zed/
make clean will run "make clean" for all the projects
make clean-all will run "make clean" for all the projects and libraries
make lib will run "make all" for the library files
The ILA can not work at 250MHz on ZED/ZC702. Because of this, the data
path was modified from 28bits@250MHz to 56bits@125MHz, by using a FIFO.
The ZED/ZC702 max BUFG frequency is 464MHz, which corresponds to a 2.16
period so the constraints were modified accordingly.