The GNU Development Tools can be built on a wide variety of hosts. So, of course, they must be configured. Like the last example,
./configure sun4 --prefix=/local ./configure sun3 --prefix=/local
will configure the source to be built in subdirectories, in order to keep the intermediate pieces separate, and to be installed in `/local'.
When built with suitable development environments, these will be native tools. We'll explain the term native later.