You may want to distribute a pre-compiled package for an other person to use. With qiBuild, this is easy.
Simply run:
$ qibuild package --runtime foo
This will configure, build and install the foo project in QI_WORK_TREE/package/foo, and and generate a re-distributable binary package in QI_WORK_TREE/package/foo.tar.gz) (or foo.zip if you are on windows)
The archive will by default contain only the runtime components (executables, dependent libraries, data ...)
If you want to provide a pre-compiled package so that other people can compile their own software with it, run:
$ qibuild package foo
The archive will contain the static libraries, the headers (provided you used the correct install rule), the cmake files, and so on. Notes: depedencies will not be installed inside the devel package, because this package is supposed to be use inside a toolchain.
More on this in the Using toolchains tutorial.