From 216e4f0eed1d418fc179cca0794d5b82df8d6170 Mon Sep 17 00:00:00 2001
From: Jeffrey Townsend <jeffrey.townsend@bigswitch.com>
Date: Sat, 31 Dec 2016 20:59:27 +0000
Subject: [PATCH] Platform Kernel Module Support

Per-platform kernel modules can now be built out of tree against multiple kernel mbuild packages.
---
 make/kmodule.mk            | 14 ++++++++++++++
 tools/scripts/kmodbuild.sh | 21 +++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 make/kmodule.mk
 create mode 100755 tools/scripts/kmodbuild.sh

diff --git a/make/kmodule.mk b/make/kmodule.mk
new file mode 100644
index 00000000..84a7bfbb
--- /dev/null
+++ b/make/kmodule.mk
@@ -0,0 +1,14 @@
+ifndef KERNELS
+$(error $$KERNELS must be set)
+endif
+
+ifndef KMODULES
+$(error $$KMODULES must be set)
+endif
+
+ifndef PLATFORM
+$(error $$PLATFORM must be set)
+endif
+
+modules:
+	$(ONL)/tools/scripts/kmodbuild.sh "$(KERNELS)" "$(KMODULES)" $(PLATFORM)
diff --git a/tools/scripts/kmodbuild.sh b/tools/scripts/kmodbuild.sh
new file mode 100755
index 00000000..36d801cd
--- /dev/null
+++ b/tools/scripts/kmodbuild.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+set -e
+
+#
+# kmodbuild.sh kernel-packages module-directories platform-name
+#
+
+function build_module
+{
+    KERNEL=`onlpm --find-dir $1 mbuilds`
+    BUILD_DIR=`mktemp -d`
+    cp -R $2/* "$BUILD_DIR"
+    make -C $KERNEL M=$BUILD_DIR modules
+    make -C $KERNEL M=$BUILD_DIR INSTALL_MOD_PATH=`pwd` INSTALL_MOD_DIR="$3" modules_install
+}
+
+for kernel in $1; do
+    for module in $2; do
+        build_module $kernel $module $3
+    done
+done