The install script script_gpstk.sh which is mentioned in the INSTALL.txt file is missing from the gpstk-2.5.src.tar.gz archive.
It seems that this script did not want to be packaged, my apologies. A new gpstk-2.5.src.tar.gz has been uploaded with the script.
It seems that this script did not want to be packaged, my apologies. A new gpstk-2.5.src.tar.gz has been uploaded with the script.