From eef3f4d3c1256a059e3aee50d19f3d9dba3475a8 Mon Sep 17 00:00:00 2001
From: Cyril Brulebois <cyril@debamax.com>
Date: Sat, 28 Aug 2021 06:02:43 +0200
Subject: [PATCH] Use the $< automatic variable.

That's the name of the first prerequisite.
---
 Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 77a60e4..d41c60c 100644
--- a/Makefile
+++ b/Makefile
@@ -122,14 +122,14 @@ raspi_4_bullseye.yaml: raspi_base_bullseye.yaml
 
 %.img.sha256: %.img
 	echo $@
-	sha256sum $(@:img.sha256=img) > $@
+	sha256sum $< > $@
 
 %.img.xz.sha256: %.img.xz
 	echo $@
-	sha256sum $(@:img.xz.sha256=img.xz) > $@
+	sha256sum $< > $@
 
 %.img.xz: %.img
-	xz -f -k -z -9 $(@:.xz=)
+	xz -f -k -z -9 $<
 
 %.img.bmap: %.img
 	bmaptool create -o $@ $<