From 6d23af9306af875d25963d35e7b0e2556e6bcb60 Mon Sep 17 00:00:00 2001
From: Tom Tromey <tromey@redhat.com>
Date: Mon, 18 Jun 2001 01:08:34 +0000
Subject: [PATCH] 	* automake.in (require_file_internal): Check for
 already-required 	file after searching for it, and only if it is not
 found.  Don't 	use `readlink' when checking for dangling symlink.  Work if 
 --force-missing specified. 	* tests/acoutput2.test: Also test
 --force-missing.

---
 ChangeLog            |  6 ++++++
 automake.in          | 26 ++++++++++++++++++++------
 tests/acoutput2.test |  6 +++++-
 3 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index ca600e83..261bba82 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2001-06-17  Tom Tromey  <tromey@redhat.com>
 
+	* automake.in (require_file_internal): Check for already-required
+	file after searching for it, and only if it is not found.  Don't
+	use `readlink' when checking for dangling symlink.  Work if
+	--force-missing specified.
+	* tests/acoutput2.test: Also test --force-missing.
+
 	Fix for libtool.test:
 	* automake.in (generate_makefile): Call handle_libtool.
 	(handle_libtool): New sub.
diff --git a/automake.in b/automake.in
index 4fe79c9d..db182a8b 100755
--- a/automake.in
+++ b/automake.in
@@ -7354,10 +7354,6 @@ sub require_file_internal
 	my $errfile;
 	my $save_dir;
 
-	# If we've already looked for it, we're done.
-	next if defined $require_file_found{$file};
-	$require_file_found{$file} = 1;
-
 	my $found_it = 0;
 	my $dangling_sym = 0;
 	foreach my $dir (@require_file_paths)
@@ -7371,7 +7367,7 @@ sub require_file_internal
 	    # config_aux_path.
 	    $errfile = $errdir . '/' . $file;
 
-	    if (-l $fullfile && ! -f readlink ($fullfile))
+	    if (-l $fullfile && ! -f $fullfile)
 	    {
 		$dangling_sym = 1;
 		last;
@@ -7385,13 +7381,26 @@ sub require_file_internal
 	    }
 	}
 
-	if ($found_it && ! $force_missing)
+	# `--force-missing' only has an effect if `--add-missing' is
+	# specified.
+	if ($found_it && (! $add_missing || ! $force_missing))
 	{
 	    # Prune the path list.
 	    @require_file_paths = $save_dir;
 	}
 	else
 	{
+	    # If we've already looked for it, we're done.  You might
+	    # wonder why we don't do this before searching for the
+	    # file.  If we do that, then something like
+	    # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
+	    # DIST_COMMON.
+	    if (! $found_it)
+	    {
+		next if defined $require_file_found{$file};
+		$require_file_found{$file} = 1;
+	    }
+
 	    if ($strictness >= $mystrict)
 	    {
 		if ($dangling_sym && $add_missing)
@@ -7452,6 +7461,11 @@ sub require_file_internal
 		    @require_file_paths = &dirname ($errfile);
 		}
 
+		# If --force-missing was specified, and we have
+		# actually found the file, then do nothing.
+		next
+		    if $found_it && $force_missing;
+
 		if ($suppress)
 		{
 		    if ($is_configure)
diff --git a/tests/acoutput2.test b/tests/acoutput2.test
index fdefa027..28d542b7 100755
--- a/tests/acoutput2.test
+++ b/tests/acoutput2.test
@@ -18,4 +18,8 @@ mkdir subdir
 
 $AUTOMAKE || exit 1
 
-grep '^DIST_COMMON =.*foo\.in' Makefile.in
+count=`fgrep foo.in Makefile.in | wc -l`
+test $count -eq 2 || exit 1
+
+# This ought to work as well.
+$AUTOMAKE --add-missing --force-missing
-- 
2.43.5