[PATCH v1 1/5] README: update minimum make to 4.1

[Edwin Török <edwin.torok@xxxxxxxxxx>]

Using .DEFAULT_GOAL requires at least GNU make 3.81.
It was suggested to update make to match ~2015 era gcc/binutils, hence
4.1.

Signed-off-by: Edwin Török <edwin.torok@xxxxxxxxxx>
Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
Link: 
https://lore.kernel.org/xen-devel/c0ba57bb-0d86-4209-b019-daf8328b5205@xxxxxxxx/
---
 README | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README b/README
index 889a4ea906..af1f539d29 100644
--- a/README
+++ b/README
@@ -35,7 +35,7 @@ Second, there are a number of prerequisites for building a 
Xen source
 release. Make sure you have all the following installed, either by
 visiting the project webpage or installing a pre-built package
 provided by your OS distributor:
-    * GNU Make v3.80 or later
+    * GNU Make v4.1 or later
     * C compiler and linker:
       - For x86:
         - GCC 5.1 or later
-- 
2.47.3