From daf18762e1b906bf8c80193358c73a1fd10691cd Mon Sep 17 00:00:00 2001
From: Greg Troxel <gdt@lexort.com>
Date: Sat, 9 Jul 2022 23:52:29 +0000
Subject: [PATCH] GNUMakefile: Adjust cp invocation to what POSIX requires

"cp -a" is nonportable, as POSIX does not specify -a:
  https://pubs.opengroup.org/onlinepubs/9699919799/utilities/cp.html
Use -R -p instead.

Signed-off-by: Greg Troxel <gdt@lexort.com>
Reviewed-by: Rob Browning <rlb@defaultvalue.org>
Tested-by: Rob Browning <rlb@defaultvalue.org>
---
 GNUmakefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/GNUmakefile b/GNUmakefile
index 812ea38..767b0ee 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -176,7 +176,7 @@ dev/python-proposed: dev/python.c src/bup/compat.c src/bup/io.c
 clean_paths += dev/python
 dev/python: dev/python-proposed
 	dev/validate-python $@-proposed
-	cp -a $@-proposed $@
+	cp -R -p $@-proposed $@
 
 clean_paths += dev/bup-exec
 generated_dependencies += dev/bup-exec.d
-- 
2.39.2