#
# 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).

SHELL=/bin/bash

SUBDIRS := $(shell pwd)

#SCST_INC_DIR := /usr/local/include/scst
SCST_INC_DIR := $(SUBDIRS)/../scst/include
#SCST_DIR := $(SCST_INC_DIR)
SCST_DIR := $(shell pwd)/../scst/src
SBINDIR := /usr/local/sbin
INITDIR := /etc/init.d
RCDIR := /etc/rc.d
KMOD := $(shell pwd)/kernel
INCDIR := $(shell pwd)/include

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

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

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 755 usr/iscsi-scst-adm $(DESTDIR)$(SBINDIR)/iscsi-scst-adm
	if [ -f /etc/debian_version ]; then \
		install -vD -m 755 etc/initd/initd.debian $(DESTDIR)$(INITDIR)/iscsi-scst; \
	elif [ -f /etc/redhat-release ]; then \
		install -vD -m 755 etc/initd/initd.redhat $(DESTDIR)$(INITDIR)/iscsi-scst; \
	elif [ -f /etc/gentoo-release ]; then \
		install -vD -m 755 etc/initd/initd.gentoo $(DESTDIR)$(INITDIR)/iscsi-scst; \
	elif [ -f /etc/slackware-version ]; then \
		install -vD -m 755 etc/initd/initd $(DESTDIR)$(RCDIR)/iscsi-scst; \
	else \
		install -vD -m 755 etc/initd/initd $(DESTDIR)$(INITDIR)/iscsi-scst; \
	fi
	@eval `sed -n 's/#define UTS_RELEASE /KERNELRELEASE=/p' $(KDIR)/include/linux/version.h $(KDIR)/include/linux/utsrelease.h 2>/dev/null`; \
	install -vD -m 644 kernel/iscsi-scst.ko \
	$(DESTDIR)$(INSTALL_MOD_PATH)/lib/modules/$(KVER)/extra/iscsi-scst.ko
	-/sbin/depmod -aq $(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

debug2release:
	sed -i.aa s/"^EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ $(KMOD)/Makefile
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	sed -i.aa s/"#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/"EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/ $(KMOD)/Makefile
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	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
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	rm $(KMOD)/Makefile.aa

release2debug:
	sed -i.aa s/"#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ $(KMOD)/Makefile
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	sed -i.aa s/"^EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/ $(KMOD)/Makefile
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	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
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	rm $(KMOD)/Makefile.aa

debug2perf:
	sed -i.aa s/"^EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ $(KMOD)/Makefile
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	sed -i.aa s/"^EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/ $(KMOD)/Makefile
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	rm $(KMOD)/Makefile.aa

perf2debug:
	sed -i.aa s/"#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ $(KMOD)/Makefile
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	sed -i.aa s/"#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/"EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/ $(KMOD)/Makefile
	@cmp $(KMOD)/Makefile $(KMOD)/Makefile.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(KMOD)/Makefile.aa; echo "sed failed: wrong original state?"; false; fi
	rm $(KMOD)/Makefile.aa

disable_proc:
	sed -i.aa s/"^#define CONFIG_SCST_PROC"/"\/* #define CONFIG_SCST_PROC *\/"/ $(INCDIR)/iscsi_scst_ver.h
	@cmp $(INCDIR)/iscsi_scst_ver.h $(INCDIR)/iscsi_scst_ver.h.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(INCDIR)/iscsi_scst_ver.h.aa; echo "sed failed: wrong original state?"; false; fi
	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
	@cmp $(INCDIR)/iscsi_scst_ver.h $(INCDIR)/iscsi_scst_ver.h.aa >/dev/null; if [[ $$? = 0 ]]; then rm $(INCDIR)/iscsi_scst_ver.h.aa; echo "sed failed: wrong original state?"; false; fi
	rm $(INCDIR)/iscsi_scst_ver.h.aa

.PHONY: all mods progs install clean extraclean debug2release release2debug debug2perf perf2debug disable_proc enable_proc
