execstack | ELF GNU_STACK program header editing utility | Mehr ...
The execstack package contains a utility which modifies (or adds) the GNU_STACK program header to ELF binaries, and allows changing the executable flag.
prelink | ELF prelinking utility to speed up dynamic linking | Mehr ...
The prelink package contains a utility which modifies ELF shared libraries and executables, so that far fewer relocations need to be resolved at runtime and thus programs come up faster.