Use empty rule rather than touch when there are no perms/tree inputs

1 files changed, 2 insertions, 2 deletions

diff --git a/setup.rc b/setup.rc
index 28860110..300b9f40 100755
--- a/setup.rc
+++ b/setup.rc
@@ -52,9 +52,9 @@ fn gen {
 			printf '%s\n' $tree_perms >$absdir/local.perms
 			perms_inputs=($perms_inputs '$dir'/local.perms)
 		}
-		if(~ $#perms_inputs 0) build '$outdir/root.perms' touch
+		if(~ $#perms_inputs 0) build '$outdir/root.perms' empty
 		if not build '$outdir/root.perms' cat $perms_inputs
-		if(~ $#tree_inputs 0) build '$outdir/root.tree' touch
+		if(~ $#tree_inputs 0) build '$outdir/root.tree' empty
 		if not build '$outdir/root.tree' cat $tree_inputs
 	} >local.ninja.tmp
 	mv $absdir/^(local.ninja.tmp local.ninja)