configure from `configure.in', run the
autoconf program with no arguments.
`configure.in' with the
m4 macro processor, using the
Autoconf macros. If you give
autoconf an argument, it reads that
file instead of `configure.in' and writes the configuration script
to the standard output instead of to
configure. If you give
autoconf the argument `-', it reads the standard input
instead of `configure.in' and writes the configuration script on
the standard output.
The Autoconf macros are defined in several files. Some of the files are
distributed with Autoconf;
autoconf reads them first. Then it
looks for the optional file `acsite.m4' in the directory that
contains the distributed Autoconf macro files, and for the optional file
`aclocal.m4' in the current directory. Those files can contain
your site's or the package's own Autoconf macro definitions
(see section Writing Macros, for more information). If a macro is defined
in more than one of the files that
autoconf reads, the last
definition it reads overrides the earlier ones.
autoconf accepts the following options:
AC_MACRODIRenvironment variable to a directory; this option overrides the environment variable.
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