KERNEL_SRC_DIR ?= /lib/modules/`uname -r`/build
#KERNEL_SRC_DIR = /usr/src/android/3.0-mid

ifeq ($(ARCH),i386)
elf-size := elf32
asm-path := i386
else
elf-size := elf64
asm-path := amd64
endif

chipsec-objs := chipsec_km.o $(asm-path)/cpu.o
obj-m += chipsec.o

all: chipsec

check_kernel_dir:
	@if [ ! -d $(KERNEL_SRC_DIR) ]; then \
		echo "Unable to find the Linux source tree."; \
		exit 1; \
	fi

chipsec: check_kernel_dir clean
	nasm -f $(elf-size) -o $(asm-path)/cpu.o $(asm-path)/cpu.asm
	make -C $(KERNEL_SRC_DIR) SUBDIRS=${CURDIR} modules

clean: check_kernel_dir
	make -C $(KERNEL_SRC_DIR) SUBDIRS=${CURDIR} clean
	rm -f ${asm-path}/cpu.o