From b57272f1379a584e68e5323c41041e4fc213c6e9 Mon Sep 17 00:00:00 2001
From: Kalimuthu-Velappan
 <53821802+Kalimuthu-Velappan@users.noreply.github.com>
Date: Sat, 17 Oct 2020 17:28:45 +0530
Subject: [PATCH] [build]: Fixes the DPKG cache break because of SAI package
 content changes without changing its version (#5651)

- The issue is that the SAI package content is changed without changing its version. The DPKG caches the wrong version of SAI package.
- The fix is to include the SAI package content header for SHA calcaulation. This will detect if there is any change in the SAI package.
---
 platform/broadcom/sai.dep | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/platform/broadcom/sai.dep b/platform/broadcom/sai.dep
index 11cc72b192..21455ca546 100644
--- a/platform/broadcom/sai.dep
+++ b/platform/broadcom/sai.dep
@@ -3,12 +3,16 @@
 SPATH       := $($(BRCM_SAI)_SRC_PATH)
 DEP_FILES   := $(SONIC_COMMON_FILES_LIST) platform/broadcom/sai.mk platform/broadcom/sai.dep   
 DEP_FILES   += $(SONIC_COMMON_BASE_FILES_LIST)
+# Get the Latest HTTP Header and calculate the SHA value as it is a softlink that always points to LATEST_INT_OCP_SAI_X.X.X
+SAI_FLAGS   := $(shell wget --spider --server-response $($(BRCM_SAI)_URL) $($(BRCM_SAI_DEV)_URL)  2>&1 \
+			   | grep -Ev -- '--|Date:'|sha256sum|awk '{print $$1}' )
 
 $(BRCM_SAI)_CACHE_MODE  := GIT_CONTENT_SHA 
-$(BRCM_SAI)_DEP_FLAGS   := $(SONIC_COMMON_FLAGS_LIST)
+$(BRCM_SAI)_DEP_FLAGS   := $(SONIC_COMMON_FLAGS_LIST) $(SAI_FLAGS)
 $(BRCM_SAI)_DEP_FILES   := $(DEP_FILES)
 
+
 $(BRCM_SAI_DEV)_CACHE_MODE  := GIT_CONTENT_SHA 
-$(BRCM_SAI_DEV)_DEP_FLAGS   := $(SONIC_COMMON_FLAGS_LIST)
+$(BRCM_SAI_DEV)_DEP_FLAGS   := $(SONIC_COMMON_FLAGS_LIST) $(SAI_FLAGS)
 $(BRCM_SAI_DEV)_DEP_FILES   := $(DEP_FILES)