From 6f97a5881773a20ded15041b36c511881c9bc579 Mon Sep 17 00:00:00 2001
From: Richard Purdie <rpurdie@linux.intel.com>
Date: Mon, 27 Oct 2008 18:46:51 +0000
Subject: [PATCH] classes/conf: Handle Distro PR change in sanity.bbclass

This patch:
* Moves the ABI variables into a new abi_version.conf (like Poky).
* Renames SANITY_ABI to OELAYOUT_ABI since it has uses outside
  sanity.bbclass and sanity.conf.
* Adds checks to sanity.bbclass so the user is notified when DISTRO_PR
  changes in a similar way to the OELAYOUT_ABI versions.
---
 classes/sanity.bbclass | 18 +++++++++++++++++-
 conf/bitbake.conf      |  1 +
 conf/sanity.conf       |  8 +-------
 3 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/classes/sanity.bbclass b/classes/sanity.bbclass
index b925d05e18..c9effb5596 100644
--- a/classes/sanity.bbclass
+++ b/classes/sanity.bbclass
@@ -140,7 +140,7 @@ def check_sanity(e):
 	#
 	# Check the 'ABI' of TMPDIR
 	#
-	current_abi = data.getVar('SANITY_ABI', e.data, True)
+	current_abi = data.getVar('OELAYOUT_ABI', e.data, True)
 	abifile = data.getVar('SANITY_ABIFILE', e.data, True)
 	if os.path.exists(abifile):
 		f = file(abifile, "r")
@@ -156,6 +156,22 @@ def check_sanity(e):
 		f.write(current_abi)
 	f.close()
 
+	#
+	# Check the Distro PR value didn't change
+	#
+	distro_pr = data.getVar('DISTRO_PR', e.data, True)
+	prfile = data.getVar('SANITY_PRFILE', e.data, True)
+	if os.path.exists(prfile):
+		f = file(prfile, "r")
+		pr = f.read().strip()
+		if (pr != distro_pr):
+			# Code to convert from one ABI to another could go here if possible.
+			messages = messages + "Error, DISTRO_PR has changed (%s to %s) which means all packages need to rebuild. Please remove your TMPDIR so this can happen. For autobuilder setups you can avoid this by using a TMPDIR that include DISTRO_PR in the path.\n" % (pr, distro_pr)
+	else:
+		f = file(prfile, "w")
+		f.write(distro_pr)
+	f.close()
+
 	if messages != "":
 		raise_sanity_error(messages)
 
diff --git a/conf/bitbake.conf b/conf/bitbake.conf
index ab8fa9dcf2..6207e5be50 100644
--- a/conf/bitbake.conf
+++ b/conf/bitbake.conf
@@ -580,6 +580,7 @@ include conf/machine/${MACHINE}.conf
 include conf/distro/${DISTRO}.conf
 include conf/documentation.conf
 require conf/sanity.conf
+require conf/abi_version.conf
 
 ##################################################################
 # Weak variables (usually to retain backwards compatibility)
diff --git a/conf/sanity.conf b/conf/sanity.conf
index e5fe74894d..d6ecfa6765 100644
--- a/conf/sanity.conf
+++ b/conf/sanity.conf
@@ -5,14 +5,8 @@
 # Expert users can confirm their sanity with "touch conf/sanity.conf"
 BB_MIN_VERSION = "1.8.10"
 
-#
-# SANITY_ABI allows us to notify users when the format of TMPDIR changes in 
-# an incompatible way. Such changes should usually be detailed in the commit
-# that breaks the format and have been previously discussed on the mailing list 
-# with general agreement from the core team.
-#
-SANITY_ABI = "2"
 SANITY_ABIFILE = "${TMPDIR}/abi_version"
+SANITY_PRFILE = "${TMPDIR}/distro_pr"
 
 INHERIT += "sanity"
 
-- 
2.39.5