From e91a9e852536e284b2e37c604b066bdfbc2fa5eb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kamil=20Doma=C5=84ski?= <kamil@domanski.co>
Date: Thu, 17 Dec 2015 17:30:19 +0100
Subject: [PATCH] preserve 'System.map' during kernel build

allows the proper operation of 'depmod' when building out-of-tree modules
---
 .../third_party/coreos-overlay/eclass/coreos-kernel.eclass   | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sdk_container/src/third_party/coreos-overlay/eclass/coreos-kernel.eclass b/sdk_container/src/third_party/coreos-overlay/eclass/coreos-kernel.eclass
index 678800a401..35742e1040 100644
--- a/sdk_container/src/third_party/coreos-overlay/eclass/coreos-kernel.eclass
+++ b/sdk_container/src/third_party/coreos-overlay/eclass/coreos-kernel.eclass
@@ -156,6 +156,11 @@ prepare-lib-modules-release-dirs() {
 		"${D}/usr/lib/modules/${version}" || die
 
 	# Clean up the build tree and install for out-of-tree module builds
+	find "build/" -follow -maxdepth 1 -name 'System.map' -print \
+		| cpio -pd \
+		--preserve-modification-time \
+		--owner=root:root \
+		"${D}/usr/lib/modules/${version}" || die
 	kmake clean
 	find "build/" -type d -empty -delete || die
 	rm --recursive \