From ae663c98e9036f78bc04893073602eff96fc60c6 Mon Sep 17 00:00:00 2001
From: Andre Heider <a.heider@gmail.com>
Date: Mon, 2 Dec 2019 08:01:49 +0100
Subject: [PATCH] build: fix calculate_stamp() for multiple corner cases

- follow symlinks (as used by RPi/Slice)
- don't include hidden files like vi swap files (lol)
- remove duplicates (like $LINUX_DEPENDS for linux itself)
- sort by filename, not by hash
- don't use one sha256sum process per file, use xargs to pass all files to
  one process.
---
 config/functions | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/config/functions b/config/functions
index 552488d5e2..e9dcdcd0f0 100644
--- a/config/functions
+++ b/config/functions
@@ -851,10 +851,10 @@ calculate_stamp() {
   [ -n "$DEVICE" ] && stamp+=" $PROJECT_DIR/$PROJECT/devices/$DEVICE/patches/$PKG_NAME"
   [ -n "$PKG_NEED_UNPACK" ] && stamp+=" $PKG_NEED_UNPACK"
 
-  data="$(find ${stamp} -exec sha256sum {} \; 2>/dev/null | sed "s/ ${ROOT//\//\\/}\// /")"
+  data="$(find -L ${stamp} -type f -not -name '.*' 2>/dev/null | sed "s|^${ROOT}/||" | LC_ALL=C sort -u | xargs sha256sum)"
   [ -n "${PKG_STAMP}" ] && data+=$'\n'"$(echo "${PKG_STAMP}" | sha256sum)"
 
-  echo "${data}" | sort | sha256sum | cut -d" " -f1
+  echo "${data}" | sha256sum | cut -d" " -f1
 }
 
 target_has_feature() {