26.2 Specifying the Target
By default, the `configure' script will assume that the target is
the same as the host. This is the more common case; for example, when
the target is the same as the host, you get a native compiler rather
than a cross compiler.
If you want to build a cross compilation tool, you must specify the
target explicitly by using the `--target' option when you run
`configure' See section 3. How to run configure and make. The argument to
`--target' is the configuration name of the system for which you
wish to generate code. See section 3.4 Configuration Names. For example, to
build tools which generate code for a MIPS ELF embedded
system, you would use `--target mips-elf'.