#
# Makefile for iSCSI-SCST
#
# Note! Dependencies are done automatically by 'make dep', which also
# removes any old dependencies. DON'T put your own dependencies here
# unless it's something special (not a .c file).

ifndef PREFIX
        PREFIX=/usr/local
endif

SHELL=/bin/bash

SUBDIRS := $(shell pwd)

SCST_INC_DIR := $(shell if [ -e "$$PWD/../scst" ];			\
                  then echo "$$PWD/../scst/include";			\
                  else echo "$(DESTDIR)$(PREFIX)/include/scst"; fi)
SCST_DIR := $(shell if [ -e "$$PWD/../scst" ]; then echo "$$PWD/../scst/src"; \
		else echo "$(DESTDIR)$(PREFIX)/include/scst"; fi)
SBINDIR := $(PREFIX)/sbin
INITDIR := /etc/init.d
RCDIR := /etc/rc.d
MANDIR ?= $(PREFIX)/man
KMOD := $(shell pwd)/kernel
INCDIR := $(shell pwd)/include

ifeq ($(KVER),)
  ifeq ($(KDIR),)
    KVER := $(shell uname -r)
    KDIR := /lib/modules/$(KVER)/build
  else
    ifeq ($(KERNELRELEASE),)
      KVER := $(strip $(shell						\
	cat $(KDIR)/include/config/kernel.release 2>/dev/null ||	\
	make -s -C $(KDIR) kernelversion))
    else
      KVER := $(KERNELRELEASE)
    endif
  endif
else
  KDIR := /lib/modules/$(KVER)/build
endif

ifeq ($(INSTALL_MOD_PATH),)
  export INSTALL_MOD_PATH := $(DESTDIR)
endif

INSTALL_DIR := $(INSTALL_MOD_PATH)/lib/modules/$(KVER)/extra

all: include/iscsi_scst_itf_ver.h progs mods

mods: Modules.symvers Module.symvers
	$(MAKE) -C $(KDIR) SCST_INC_DIR=$(SCST_INC_DIR) SUBDIRS=$(KMOD) modules

progs:
	$(MAKE) -C usr SCST_INC_DIR=$(SCST_INC_DIR)

include/iscsi_scst_itf_ver.h: include/iscsi_scst.h
	echo "/* Autogenerated, don't edit */" >include/iscsi_scst_itf_ver.h
	echo "" >>include/iscsi_scst_itf_ver.h
	echo -n "#define ISCSI_SCST_INTERFACE_VERSION " >>include/iscsi_scst_itf_ver.h
	echo -n "ISCSI_VERSION_STRING \"_" >>include/iscsi_scst_itf_ver.h
	echo "`sha1sum include/iscsi_scst.h|awk '{printf $$1}'`\"" >>include/iscsi_scst_itf_ver.h

install: all
	@install -vD -m 755 usr/iscsi-scstd $(DESTDIR)$(SBINDIR)/iscsi-scstd
	@install -vD -m 644 doc/manpages/iscsi-scstd.conf.5 $(DESTDIR)$(MANDIR)/man5/iscsi-scstd.conf.5
	@install -vD -m 644 doc/manpages/iscsi-scstd.8 $(DESTDIR)$(MANDIR)/man8/iscsi-scstd.8
	@install -vD -m 755 usr/iscsi-scst-adm $(DESTDIR)$(SBINDIR)/iscsi-scst-adm
	@install -vD -m 644 doc/manpages/iscsi-scst-adm.8 $(DESTDIR)$(MANDIR)/man8/iscsi-scst-adm.8
	$(MAKE) -C $(KDIR) SCST_INC_DIR=$(SCST_INC_DIR) SUBDIRS=$(KMOD) \
	  $$([ -n "$(DESTDIR)$(INSTALL_MOD_PATH)" ] && echo DEPMOD=true) \
	  modules_install

uninstall:
	rm -f $(DESTDIR)$(SBINDIR)/iscsi-scstd \
		$(DESTDIR)$(MANDIR)/man5/iscsi-scstd.conf.5 \
		$(DESTDIR)$(MANDIR)/man8/iscsi-scstd.8 \
		$(DESTDIR)$(SBINDIR)/iscsi-scst-adm \
		$(DESTDIR)$(MANDIR)/man8/iscsi-scst-adm.8 \
		$(INSTALL_DIR)/iscsi-scst.ko
	-/sbin/depmod -b $(INSTALL_MOD_PATH)/ -a $(KVER)

SCST_MOD_VERS := $(shell ls $(SCST_DIR)/Modules.symvers 2>/dev/null)
ifneq ($(SCST_MOD_VERS),)
Modules.symvers: $(SCST_DIR)/Modules.symvers
	echo $(SCST_MOD_VERS)
	cp $(SCST_DIR)/Modules.symvers kernel/
else
.PHONY: Modules.symvers
endif

# It's renamed in 2.6.18
SCST_MOD_VERS := $(shell ls $(SCST_DIR)/Module.symvers 2>/dev/null)
ifneq ($(SCST_MOD_VERS),)
Module.symvers: $(SCST_DIR)/Module.symvers
	cp $(SCST_DIR)/Module.symvers kernel/
else
.PHONY: Module.symvers
endif

clean:
	$(MAKE) -C usr $@
	$(MAKE) -C $(KDIR) SUBDIRS=$(KMOD) $@
	rm -f kernel/Modules.symvers kernel/Module.symvers \
		kernel/Module.markers kernel/modules.order \
		include/iscsi_scst_itf_ver.h

extraclean:
	$(MAKE) -C usr $@
	$(MAKE) -C $(KDIR) SUBDIRS=$(KMOD) clean
	rm -f kernel/Modules.symvers kernel/Module.symvers \
		kernel/Module.markers kernel/modules.order \
		include/iscsi_scst_itf_ver.h \
		kernel/*.orig kernel/*.rej

2release:
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ $(KMOD)/Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS" $(KMOD)/Makefile >/dev/null
	sed -i.aa s/"^#\?EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/"EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/ $(KMOD)/Makefile
	grep "^EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING" $(KMOD)/Makefile >/dev/null
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/ $(KMOD)/Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions" $(KMOD)/Makefile >/dev/null
	rm $(KMOD)/Makefile.aa

2debug:
	sed -i.aa s/"^#\?EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ $(KMOD)/Makefile
	grep "^EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS" $(KMOD)/Makefile >/dev/null
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/ $(KMOD)/Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING" $(KMOD)/Makefile >/dev/null
	sed -i.aa s/"^#\?EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/"EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/ $(KMOD)/Makefile
	grep "^EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions" $(KMOD)/Makefile >/dev/null
	rm $(KMOD)/Makefile.aa

2perf:
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ $(KMOD)/Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS" $(KMOD)/Makefile >/dev/null
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/ $(KMOD)/Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING" $(KMOD)/Makefile >/dev/null
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/ $(KMOD)/Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions" $(KMOD)/Makefile >/dev/null
	rm $(KMOD)/Makefile.aa

disable_proc:
	sed -i.aa s/"^#\?define CONFIG_SCST_PROC"/"\/* #define CONFIG_SCST_PROC *\/"/ $(INCDIR)/iscsi_scst_ver.h
	grep "^\/\* #define CONFIG_SCST_PROC \*\/" $(INCDIR)/iscsi_scst_ver.h >/dev/null
	rm $(INCDIR)/iscsi_scst_ver.h.aa

enable_proc:
	sed -i.aa s/"^\/\?\* #define CONFIG_SCST_PROC \*\/"/"#define CONFIG_SCST_PROC"/ $(INCDIR)/iscsi_scst_ver.h
	grep "^#define CONFIG_SCST_PROC" $(INCDIR)/iscsi_scst_ver.h >/dev/null
	rm $(INCDIR)/iscsi_scst_ver.h.aa

release-archive:
	../scripts/generate-release-archive iscsi-scst "$$(sed -n 's/^#define[[:blank:]]ISCSI_VERSION_STRING[[:blank:]]*\"\([^\"]*\)\".*/\1/p' include/iscsi_scst_ver.h)"

.PHONY: all mods progs install clean extraclean 2release 2debug 2perf disable_proc enable_proc