From 0c507981fe0365c3243e46ec9b9c1fe71ab2fff5 Mon Sep 17 00:00:00 2001
From: Tom Tromey <tromey@redhat.com>
Date: Sun, 19 Mar 2000 22:34:19 +0000
Subject: [PATCH] 	More for PR automake/38: 	* automake.texi
 (Invoking Automake): Document --force-missing. 	* automake.in
 (force_missing): New global. 	(parse_arguments): Recognize --force-missing. 
 (initialize_global_constants): Document --force-missing. 
 (require_file_internal): Handle --force-missing.

---
 ChangeLog     |  7 +++++++
 automake.in   | 12 ++++++++++--
 automake.texi |  7 +++++++
 3 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 403b70d6..a0b25476 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2000-03-19  Tom Tromey  <tromey@cygnus.com>
 
+	More for PR automake/38:
+	* automake.texi (Invoking Automake): Document --force-missing.
+	* automake.in (force_missing): New global.
+	(parse_arguments): Recognize --force-missing.
+	(initialize_global_constants): Document --force-missing.
+	(require_file_internal): Handle --force-missing.
+
 	Fix for PR automake/38:
 	* automake.in (require_file_internal): Check for and handle
 	dangling symlinks.  Fixes symlink2.test.
diff --git a/automake.in b/automake.in
index 87c26934..b754d83f 100755
--- a/automake.in
+++ b/automake.in
@@ -109,6 +109,9 @@ $add_missing = 0;
 # TRUE if we should copy missing files; otherwise symlink if possible.
 $copy_missing = 0;
 
+# TRUE if we should always update files that we know about.
+$force_missing = 0;
+
 # Files found by scanning configure.in for LIBOBJS.
 %libsources = ();
 
@@ -468,6 +471,10 @@ sub parse_arguments
 	{
 	    $force_generation = 0;
 	}
+	elsif ($arglist[0] eq '--force-missing')
+	{
+	    $force_missing = 1;
+	}
 	elsif ($arglist[0] =~ /^--output-dir=(.*)$/)
 	{
 	    # Set output directory.
@@ -6654,6 +6661,7 @@ sub initialize_global_constants
   --amdir=DIR           directory storing config files
   -c, --copy            with -a, copy missing files (default is symlink)
   --cygnus              assume program is part of Cygnus-style tree
+  --force-missing       force update of standard files
   --foreign             set strictness to foreign
   --gnits               set strictness to gnits
   --gnu                 set strictness to gnu
@@ -7476,7 +7484,7 @@ sub require_file_internal
 	    }
 	}
 
-	if ($found_it)
+	if ($found_it && ! $force_missing)
 	{
 	    # Prune the path list.
 	    @require_file_paths = $save_dir;
@@ -7485,7 +7493,7 @@ sub require_file_internal
 	{
 	    if ($strictness >= $mystrict)
 	    {
-		if ($dangling_sym)
+		if ($dangling_sym || $force_missing)
 		{
 		    unlink ($fullfile);
 		}
diff --git a/automake.texi b/automake.texi
index 6b743f15..4f1b3c26 100644
--- a/automake.texi
+++ b/automake.texi
@@ -815,6 +815,13 @@ copied.  The default is to make a symbolic link.
 Causes the generated @file{Makefile.in}s to follow Cygnus rules, instead
 of GNU or Gnits rules.  For more information, see @ref{Cygnus}.
 
+@item --force-missing
+@opindex --force-missing
+When used with @code{--add-missing}, causes standard files to be rebuilt
+even if they already exist in the source tree.  This involves removing
+the file from the source tree before creating the new symlink (or, with
+@code{--copy}, copying the new file).
+
 @item --foreign
 @opindex --foreign
 Set the global strictness to @samp{foreign}.  For more information, see
-- 
2.43.5