Cleaning up
-----------
The basic command is `make distclean'. This removes all files created
by the build.
Alternatively,
* `make mostlyclean' if you intend to compile on another
architecture. For Web2C, since the generated C files are portable,
they are not removed. If the `lex' vs. `flex' situation is going
to be different on the next machine, `rm web2c/lex.yy.c'.
* `make clean' to remove files created by compiling, but leave
configuration files and Makefiles.
* `make maintainer-clean' to remove everything that the Makefiles can
rebuild. This is more than `distclean' removes, and you should
only use it if you are thoroughly conversant with (and have the
necessary versions of) Autoconf.
* `make extraclean' to remove other junk, e.g., core files, log
files, patch rejects. This is independent of the other `clean'
targets.