From 3560533c3fb0be8b6c17234156db297e4f2e1329 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Tue, 6 Nov 2018 16:23:03 +0100
Subject: Add check for config.previous, and use it if it exists

---
 PKGBUILD | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/PKGBUILD b/PKGBUILD
index 5e4373e..489c6bd 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -108,7 +108,12 @@ prepare() {
 
 
   msg2 "Setting config..."
-  cp ../config.x86_64 .config
+  # we are in src/linux-x.yy.zz, looking for a config next to the pkgbuild
+  if [ -f ../../config.previous ]; then
+    cp ../../config.previous .config
+  else
+    cp ../config.x86_64 .config
+  fi
 
   ### Optionally disable NUMA for 64-bit kernels only
   # (x86 kernels do not support NUMA)
@@ -132,6 +137,9 @@ prepare() {
 
   make -s kernelrelease > ../version
   msg2 "Prepared %s version %s" "$pkgbase" "$(<../version)"
+
+  # back up the config
+  cp .config ../../config.previous
 }
 
 build() {
-- 
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