From: Jack Lange <jacklange@cs.pitt.edu>
Date: Wed, 16 Mar 2011 00:11:45 +0000 (-0500)
Subject: reworked build system to automatically compile Linux kernel module when selected... 
X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=commitdiff_plain;h=ed4aa27a4901310df5fa1127ad62645da1bb4802;p=palacios.git

reworked build system to automatically compile Linux kernel module when selected as the target OS
---

diff --git a/Kconfig b/Kconfig
index 6c11bac..5374402 100644
--- a/Kconfig
+++ b/Kconfig
@@ -17,8 +17,8 @@ config KITTEN
 	help
 	  This enables the necesary options to compile Palacios with Kitten
 
-config LINUX
-	bool "Linux 2.6"
+config LINUX_BUILTIN
+	bool "OLD Linux (Built in) -- to be deprecated"
 	select BUILT_IN_STDLIB
 	select BUILT_IN_ATOI
 	select FILE
@@ -26,6 +26,23 @@ config LINUX
 	  This enables the necessary options to compile Palacios with Linux 2.6
           Currently, this is in development, and only 2.6.32 is verified to work
 
+
+config LINUX
+	bool "Linux Module"
+	select BUILT_IN_STDLIB
+	select BUILT_IN_ATOI
+	select FILE
+	help
+	  This enables the necessary options to compile Palacios as a Linux module
+ 
+
+config LINUX_KERN
+	depends on LINUX
+	string "Linux Kernel Source directory" 
+	default "/usr/src/linux"
+	help 
+	  This is the directory containing the linux source for the kernel module to be built
+
 config MINIX
 	bool "MINIX 3"
 	help
diff --git a/Makefile b/Makefile
index 9acf2de..eb383bd 100644
--- a/Makefile
+++ b/Makefile
@@ -298,8 +298,10 @@ V3_INCLUDE      := -Ipalacios/include \
 
 CPPFLAGS        := $(V3_INCLUDE) -D__V3VEE__
 
-CFLAGS 		:=  -fno-stack-protector -Wall -Werror -fPIC -mno-red-zone -fno-common
-#-fPIC
+CFLAGS 		:=  -fno-stack-protector -Wall -Werror  -mno-red-zone -fno-common 
+
+
+
 #-ffreestanding
 
 
@@ -434,6 +436,9 @@ libs-y		:= palacios/lib/$(ARCH)/
 devices-y       := palacios/src/devices/
 modules-y       := modules/
 
+
+
+
 ifeq ($(dot-config),1)
 # In this section, we need .config
 
@@ -460,7 +465,12 @@ else
 palacios/include/autoconf.h: ;
 endif
 
+
+ifdef CONFIG_LINUX
+DEFAULT_EXTRA_TARGETS=linux_module
+else
 DEFAULT_EXTRA_TARGETS=
+endif
 
 # The all: target is the default when no target is given on the
 # command line.
@@ -469,6 +479,12 @@ DEFAULT_EXTRA_TARGETS=
 all: palacios $(DEFAULT_EXTRA_TARGETS)
 
 
+ifdef CONFIG_LINUX
+CFLAGS          += -mcmodel=kernel 
+else
+CFLAGS          += -fPIC
+endif
+
 ifdef CONFIG_FRAME_POINTER
 CFLAGS		+= -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
 else
@@ -529,6 +545,7 @@ core-y		:= $(patsubst %/, %/built-in.o, $(core-y))
 devices-y	:= $(patsubst %/, %/built-in.o, $(devices-y))
 libs-y		:= $(patsubst %/, %/built-in.o, $(libs-y))
 modules-y       := $(patsubst %/, %/built-in.o, $(modules-y))
+
 #core-y		:= $(patsubst %/, %/lib.a, $(core-y))
 #devices-y	:= $(patsubst %/, %/lib.a, $(devices-y))
 
@@ -553,7 +570,8 @@ modules-y       := $(patsubst %/, %/built-in.o, $(modules-y))
 
 palacios := $(core-y) $(devices-y) $(libs-y) $(modules-y)
 
-# Rule to link palacios - also used during CONFIG_KALLSYMS
+
+# Rule to link palacios - also used during CONFIG_CONFIGKALLSYMS
 # May be overridden by /Makefile.$(ARCH)
 quiet_cmd_palacios__ ?= AR $@ 
       cmd_palacios__ ?= $(AR) rcs $@ $^
@@ -592,6 +610,14 @@ libv3vee.a: $(palacios)
 
 palacios: libv3vee.a
 
+
+linux_module/v3vee.ko:
+	cd linux_module/ && make CONFIG_LINUX_KERN=$(CONFIG_LINUX_KERN)
+	cp linux_module/v3vee.ko v3vee.ko
+
+
+linux_module: linux_module/v3vee.ko
+
 palacios.asm: palacios
 	$(OBJDUMP) --disassemble $< > $@
 
@@ -707,7 +733,7 @@ clean: archclean $(clean-dirs)
 	@find . $(RCS_FIND_IGNORE) \
 		\( -name 'lib' \) -prune -o \
 	 	\( -name '*.[oas]' -o -name '.*.cmd' \
-		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
+		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' -o -name '*.ko' \) \
 		-type f -print | xargs rm -f
 
 # mrproper - Delete all generated files, including .config
diff --git a/linux_module/Makefile b/linux_module/Makefile
index 55eb199..92cb318 100644
--- a/linux_module/Makefile
+++ b/linux_module/Makefile
@@ -1,33 +1,35 @@
-KERNELDIR  := ../../linux-2.6.32.y/
-CONFIG_PALACIOS_PATH := /home/jarusl/palacios
 
+LDFLAGS += --whole-archive  --script=$(PWD)/link.cmd
 
+EXTRA_CFLAGS  += -I$(PWD)/../palacios/include/ -DMODULE=1 -D__KERNEL__=1
 
 
-v3vee-objs := palacios.o palacios-dev.o palacios-vm.o palacios-file.o palacios-stream.o palacios-console.o palacios-mm.o palacios-serial.o palacios-queue.o palacios-ringbuffer.o 
+v3vee-objs:= 	palacios.o \
+		palacios-dev.o \
+		palacios-vm.o \
+		palacios-file.o \
+		palacios-stream.o \
+		palacios-console.o \
+		palacios-mm.o \
+		palacios-serial.o \
+		palacios-queue.o \
+		palacios-ringbuffer.o 
+
 #palacios-socket.o 
 #palacios-vnet.o palacios-packet.o 
 
-v3vee-objs += ../../palacios/libv3vee.a 
+v3vee-objs += ../libv3vee.a 
 
 
 obj-m := v3vee.o
 
 
-LDFLAGS = --whole-archive  --script=$(PWD)/link.cmd
-
-
-EXTRA_CFLAGS := -I$(CONFIG_PALACIOS_PATH)/palacios/include/ -DMODULE=1 -D__KERNEL__=1
-
-
 
 all:
-	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
+	$(MAKE) -C $(CONFIG_LINUX_KERN) M=$(PWD) modules
 
 
-clean:
-	$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
 
-install:
-	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install /sbin/ -ae
+clean:
+	$(MAKE) -C $(CONFIG_LINUX_KERN) M=$(PWD) clean