infra: add standalone make

kernel/Makefile

@@ -0,0 +1,41 @@
+#
+# Makefile for out-of-tree build of MARS module
+#
+#
+# By Benjamin Kübler <benjamin.kuebler@1und1.de>
+#
+# usage make [ KDIR =/path/to/kernel/source ]
+
+ifneq ($(KERNELRELEASE),)
+
+# in-tree-build process
+include Kbuild
+
+else
+# out-of-tree-build process
+
+MARSSRC := $(shell pwd)
+DESTDIR ?= /
+KDIR ?= /lib/modules/`uname -r`/build
+
+.PHONY: greeting install default clean config
+
+default: greeting 
+	$(MAKE) -C $(KDIR) M=$(PWD)
+
+greeting:
+	@echo "Building MARS Module again: KDIR=$(KDIR)" ;
+	@if ! test -e $(KDIR)/Makefile ; then \
+		echo -e "Sorry, kernel makefile not found. You need to tell me a correct KDIR!\n" ; \
+		false; \
+	fi
+
+clean:
+	$(MAKE) -C $(KDIR) M=$(PWD) clean
+
+config:
+	$(MAKE) -C $(KDIR) M=$(PWD) config
+
+install:
+	$(MAKE) -C $(KDIR) M=$(PWD) modules_install
+endif