Platform Kernel Module Support

Per-platform kernel modules can now be built out of tree against multiple kernel mbuild packages.

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)

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