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Re: AC_DEFINE_UNQUOTED and autoheader

From: Paul Eggert
Subject: Re: AC_DEFINE_UNQUOTED and autoheader
Date: Sat, 27 May 2006 15:28:56 -0700
User-agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.4 (gnu/linux)

Ralf Wildenhues <address@hidden> writes:

> I suggest the following change:

Thanks.  I reworded it slightly, as footnotes should be avoided
technical manuals (this isn't comparative English literature :-), and
installed this patch.

2006-05-27  Ralf Wildenhues  <address@hidden>
        and Paul Eggert  <address@hidden>

        * doc/autoconf.texi (autoheader Invocation): The first argument to
        `AC_DEFINE_UNQUOTED' need not be a literal.  Mention the
        alternatives and clear up the language a bit.

--- doc/autoconf.texi.~1.1028.~ 2006-05-26 19:54:33.000000000 -0700
+++ doc/autoconf.texi   2006-05-27 15:17:44.000000000 -0700
@@ -2885,13 +2885,14 @@ arguments are given, the first one is us
 @command{autoheader} creates @file{}.
 In order to do its job, @command{autoheader} needs you to document all
-of the symbols that you might use; i.e., there must be at least one
address@hidden or one @code{AC_DEFINE_UNQUOTED} call with a third
-argument for each symbol (@pxref{Defining Symbols}).  An additional
-constraint is that the first argument of @code{AC_DEFINE}
-or @code{AC_DEFINE_UNQUOTED} must be a
-literal.  Note that all symbols defined by Autoconf's builtin tests are
-already documented properly; you only need to document those that you
+of the symbols that you might use.  Typically this is done via an
address@hidden or @code{AC_DEFINE_UNQUOTED} call whose first argument
+is a literal symbol and whose third argument describes the symbol
+(@pxref{Defining Symbols}).  Alternatively, you can use
address@hidden (@pxref{Autoheader Macros}), or you can supply a
+suitable input file for a subsequent configuration header file.
+Symbols defined by Autoconf's builtin tests are already documented properly;
+you need to document only those that you
 define yourself.
 You might wonder why @command{autoheader} is needed: after all, why

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