configure.info: Generate files

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Generate files

   Once you have written `configure.in', `Makefile.am', `acconfig.h',
and possibly `acinclude.m4', you must use autoconf and automake
programs to produce the first versions of the generated files.  This is
done by executing the following sequence of commands.
     aclocal
     autoconf
     autoheader
     automake
   The `aclocal' and `automake' commands are part of the automake
package, and the `autoconf' and `autoheader' commands are part of the
autoconf package.
   If you are using a `m4' subdirectory for your macros, you will need
to use the `-I m4' option when you run `aclocal'.
   If you are not using the Cygnus tree, use the `-a' option when
running `automake' command in order to copy the required support files
into your source directory.
   If you are using libtool, you must build and install the libtool
package with the same `--prefix' and `--exec-prefix' options as you
used with the autoconf and automake packages.  You must do this before
running any of the above commands.  If you are not using the Cygnus
tree, you will need to run the `libtoolize' program to copy the libtool
support files into your directory.
   Once you have managed to run these commands without getting any
errors, you should create a new empty directory, and run the `configure'
script which will have been created by `autoconf' with the
`--enable-maintainer-mode' option.  This will give you a set of
Makefiles which will include rules to automatically rebuild all the
generated files.
   After doing that, whenever you have changed some of the input files
and want to regenerated the other files, go to your object directory
and run `make'.  Doing this is more reliable than trying to rebuild the
files manually, because there are complex order dependencies and it is
easy to forget something.