SHELL=/bin/bash

DEV_HANDLERS_DIR = dev_handlers

ifneq ($(PATCHLEVEL),)
SCST_INC_DIR := $(SUBDIRS)/../include

obj-m := scst.o

scst-y        += scst_main.o
scst-y        += scst_targ.o
scst-y        += scst_lib.o
#scst-y        += scst_proc.o
scst-y        += scst_sysfs.o
scst-y        += scst_mem.o
scst-y        += scst_debug.o
scst-y        += scst_pres.o
obj-$(CONFIG_SCST)   += scst.o dev_handlers/

obj-$(BUILD_DEV) += $(DEV_HANDLERS_DIR)/

else
ifeq ($(KVER),)
  ifeq ($(KDIR),)
    KVER = $(shell uname -r)
    KDIR := /lib/modules/$(KVER)/build
  endif
else
  KDIR := /lib/modules/$(KVER)/build
endif

all:
	$(MAKE) -C $(KDIR) SUBDIRS=$(shell pwd) BUILD_DEV=m

scst:
	$(MAKE) -C $(KDIR) SUBDIRS=$(shell pwd) BUILD_DEV=n

MODS_VERS := $(shell ls Modules.symvers 2>/dev/null)
# It's renamed in 2.6.18
MOD_VERS := $(shell ls Module.symvers 2>/dev/null)

install: all
	-rm -f $(INSTALL_DIR)/scsi_tgt.ko
	$(MAKE) -C $(KDIR) SUBDIRS=$(shell pwd) BUILD_DEV=m \
		modules_install
	install -d $(INSTALL_DIR_H)
	install -m 644 ../include/scst.h $(INSTALL_DIR_H)
	install -m 644 ../include/scst_sgv.h $(INSTALL_DIR_H)
	install -m 644 ../include/scst_debug.h $(INSTALL_DIR_H)
	install -m 644 ../include/scst_user.h $(INSTALL_DIR_H)
	install -m 644 ../include/scst_const.h $(INSTALL_DIR_H)
ifneq ($(MODS_VERS),)
	rm -f $(INSTALL_DIR_H)/Module.symvers
	install -m 644 Modules.symvers $(INSTALL_DIR_H)
endif
ifneq ($(MOD_VERS),)
	rm -f $(INSTALL_DIR_H)/Modules.symvers
	install -m 644 Module.symvers $(INSTALL_DIR_H)
endif
	-/sbin/depmod -a $(KVER)
	mkdir -p /var/lib/scst/pr
	@echo "****************************************************************"
	@echo "*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*"
	@echo "*!!                                                          !!*"
	@echo "*!!  Now don't forget to rebuild and reinstall all your      !!*"
	@echo "*!!  target drivers, custom dev handlers and necessary user  !!*"
	@echo "*!!  space applications. Otherwise, because of the versions  !!*"
	@echo "*!!  mismatch, you could have many problems and crashes.     !!*"
	@echo "*!!  See IMPORTANT note in the \"Installation\" section of     !!*"
	@echo "*!!  SCST's README file for more info.                       !!*"
	@echo "*!!                                                          !!*"
	@echo "*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*"
	@echo "****************************************************************"

uninstall:
	cd $(DEV_HANDLERS_DIR) && $(MAKE) $@
	rm -f $(INSTALL_DIR)/scst.ko
	-rmdir $(INSTALL_DIR) 2>/dev/null
	-/sbin/depmod -a $(KVER)
	rm -rf $(INSTALL_DIR_H)
endif

ifeq ($(KVER),)
INSTALL_DIR := $(DESTDIR)/lib/modules/$(shell uname -r)/extra
else
INSTALL_DIR := $(DESTDIR)/lib/modules/$(KVER)/extra
endif
INSTALL_DIR_H := $(DESTDIR)/usr/local/include/scst

EXTRA_CFLAGS += -I$(SCST_INC_DIR) -Wextra -Wno-unused-parameter \
		-Wno-missing-field-initializers

#EXTRA_CFLAGS += -DCONFIG_SCST_STRICT_SERIALIZING

EXTRA_CFLAGS += -DCONFIG_SCST_EXTRACHECKS

#EXTRA_CFLAGS += -DCONFIG_SCST_USE_EXPECTED_VALUES
#EXTRA_CFLAGS += -DCONFIG_SCST_TEST_IO_IN_SIRQ
#EXTRA_CFLAGS += -DCONFIG_SCST_ABORT_CONSIDER_FINISHED_TASKS_AS_NOT_EXISTING

#EXTRA_CFLAGS += -fno-inline

#EXTRA_CFLAGS += -DCONFIG_SCST_TRACING

EXTRA_CFLAGS += -DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions
#EXTRA_CFLAGS += -DCONFIG_SCST_DEBUG_TM -DCONFIG_SCST_TM_DBG_GO_OFFLINE
#EXTRA_CFLAGS += -DCONFIG_SCST_DEBUG_RETRY
#EXTRA_CFLAGS += -DCONFIG_SCST_DEBUG_OOM
#EXTRA_CFLAGS += -DCONFIG_SCST_DEBUG_SN

#EXTRA_CFLAGS += -DCONFIG_SCST_MEASURE_LATENCY

# If defined, makes SCST zero allocated data buffers. 
# Undefining it considerably improves performance and eases CPU load, 
# but could create a security hole (information leakage), so 
# enable it if you have strict security requirements.
#EXTRA_CFLAGS += -DSCST_STRICT_SECURITY

.PHONY: all install uninstall