#
# Copyright (c) 2011-2015, Emulex
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

NO_TARGET=$(error Target driver must be built first)
-include $(PWD)/Makefile.incl

KMOD = ocs_openiscsi
OCS = ../../common/ocs
IHAL = ../../common/ihal
ISCSI = ../../common/ocs_iscsi
LINUXCOMMON = ../common
# include ocs_template to get the ocs_scsi_ini_template_t structure declaration
TEMPLATE = ../../common/ocs_template
# For now, our initiator source directory is located here, consisting of ocs_openiscsi_ini.c
INITIATOR = .

ifndef KERN_VERS
       KERN_VERS=$(shell uname -r)
endif
ifndef VERSION
        VERSION=$(shell pwd|cut -f5 -d/)
endif

EXTRA_CFLAGS += -g -Werror -DOCS_INCLUDE_DEBUG -DOCS_QUEUE_LIMIT=256
EXTRA_CFLAGS += -Wextra -Wno-missing-field-initializers -Wall -Wno-unused-parameter -Wno-ignored-qualifiers
EXTRA_CFLAGS += -Wframe-larger-than=2048

SRC_TAR = $(KMOD)-src.tgz
DOC_TAR = $(KMOD)-doc.tgz

obj-m := $(KMOD).o

ccflags-y :=	-I$(src) \
		-I$(src)/$(IHAL) \
		-I$(src)/$(OCS) \
		-I$(src)/$(ISCSI) \
		-I$(src)/$(TARGET) \
		-I$(src)/$(INITIATOR) \
		-I$(src)/$(LINUXCOMMON) \
		-I$(src)/$(TEMPLATE)

$(KMOD)-y :=	ocs_lnx.o
$(KMOD)-y +=	$(INITIATOR)/ocs_openiscsi_ini.o

clean-files := $($(KMOD)-y)

# files from this directory to include in a release
RELEASE_FILES = \
	Makefile \
	ocs.h \
	ocs_lnx.c \
	ocs_openiscsi_ini.c \
	ocs_scsi_ini.h \
	README \
	ocs_openiscsi.patch \
	ocs_gen_incl.sh \
	version.h

all:	Module.symvers
	make -C /lib/modules/$(KERN_VERS)/build M=$(PWD) modules

# Module.symvers - we need the exported symbols from one of the target
# drivers (ocs_iscsi_ramd or ocs_iscsi_scst).
# When the target is built, it will set the SYMVERS variable to copy the
# right Module.symvers file.  NO_TARGET will be set to nothing.
# If the target has not been built, then NO_TARGET will generate an error.
Module.symvers:
	$(NO_TARGET)
	cp $(SYMVERS) .

clean:
	make -C /lib/modules/$(KERN_VERS)/build M=$(PWD) $@
	rm -f $(SRC_TAR) $(DOC_TAR)
#	rm -f Makefile.incl

list_release_files:
	@echo $(RELEASE_FILES)

docdist:
	@echo "$@ not a valid build target"
