These are the tools needed in the PCP build. We cannot use the binaries built in the sibling directories, as these may involve other libraries from $ROOT (e.g. libc), and be in a.out formats that are not supported on the build machine. The former problem could be overcome with LD_LIBRARY_PATH and related controls. The latter problem in unsolvable! So, we recompile these tools using the local libraries and compilers on the build machine.