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#
# Makefile for the Linux Kernel iSCSI Initiator
#
# This Makefile invokes KBuild from outside the kernel directory when
# used from the main open-iscsi package. It also contains all of the
# KBuild stuff needed to build the modules.
#
# Kbuild stuff, the following is the only part of this file that KBuild
# actually uses itself.
EXTRA_CFLAGS += -I$(obj) -I$(obj)/../include
ifeq ($(DEBUG_SCSI), 1)
EXTRA_CFLAGS += -DDEBUG_SCSI=1
endif
ifeq ($(DEBUG_TCP), 1)
EXTRA_CFLAGS += -DDEBUG_TCP=1
endif
obj-m += scsi_transport_iscsi.o
obj-m += libiscsi.o
obj-m += iscsi_tcp.o
# Everything beyond this point is used to call KBuild or handle support
# for multiple kernel versions.
# Kbuild verbosity
V ?= 0
# allow users to override these
# eg to compile for a kernel that you aren't currently running
KERNELRELEASE ?= $(shell uname -r)
KSRC ?= /lib/modules/$(KERNELRELEASE)/build
KBUILD_OUTPUT ?=
# this is the basic Kbuild invocation, just append your make target
KBUILD_BASE = +$(MAKE) -C $(KSRC) M=`pwd` KBUILD_OUTPUT=$(KBUILD_OUTPUT) $(KARCH) V=$(V)
all: kernel_check
$(KBUILD_BASE) modules
# ============ BEGIN code for kernel_check and source patching ================
# We calculate the Linux version for compilation. Than according to version,
# if needed, we patch source-code to match the compiling kernel.
# if you need a new kernel sub-version just add a target below.
#
# IMPORTANT: do "make clean" before submitting to SVN so source is in unpatched
# form.
#some constants
14to19_patch=2.6.14-19_compat.patch
20to21_patch=2.6.20-21_compat.patch
24_patch=2.6.24_compat.patch
all_patches=14to21_patch 20to21_patch 24_patch
cur_patched=cur_patched
## fun stuff for maintaining multiple versions
# check to see if code is unpatched
unpatch_code=$(shell test -e $(cur_patched) && echo do_unpatch_code )
KSUBLEVEL = $(shell cat $(KSRC)/Makefile | awk -F= '/^SUBLEVEL =/ {print $$2}' | \
sed 's/^[ \t]*//;s/[ \t]*$$//')
KERNEL_TARGET=linux_2_6_$(KSUBLEVEL)
kernel_check: $(KERNEL_TARGET)
linux_2_6_14: has_14to19_patch
linux_2_6_15: has_14to19_patch
linux_2_6_16: has_14to19_patch
linux_2_6_17: has_14to19_patch
linux_2_6_18: has_14to19_patch
linux_2_6_19: has_14to19_patch
linux_2_6_20: has_20to21_patch
linux_2_6_21: has_20to21_patch
linux_2_6_22: has_20to21_patch
linux_2_6_23: has_20to21_patch
linux_2_6_24: has_24_patch
linux_2_6_25: $(unpatch_code)
do_unpatch_code:
echo "Un-patching source code for use with linux-2.6.14 and up ..."
patch -R -E -p1 < $(cur_patched)
rm -f `readlink $(cur_patched)`
rm -f $(cur_patched)
# these below targets must be the same as the variable name prefixed by has_
# otherwise below compat_patch: target will not work
has_14to19_patch: $(14to19_patch)
echo "Patching source code for linux-2.6.14-19 ..."
if [ -e $(cur_patched) ]; then \
make -C . clean; \
fi
patch -p1 < $(14to19_patch)
cp $(14to19_patch) $@
ln -s $@ $(cur_patched)
has_20to21_patch: $(20to21_patch)
echo "Patching source code for linux-2.6.20-21 ..."
if [ -e $(cur_patched) ]; then \
make -C . clean; \
fi
patch -p1 < $(20to21_patch)
cp $(20to21_patch) $@
ln -s $@ $(cur_patched)
has_24_patch: $(24_patch)
echo "Patching source code for linux-2.6.24 ..."
if [ -e $(cur_patched) ]; then \
make -C . clean; \
fi
patch -p1 < $(24_patch)
cp $(24_patch) $@
ln -s $@ $(cur_patched)
# ============ END code for kernel_check and source patching =================
clean: $(unpatch_code)
$(KBUILD_BASE) clean
rm -f Module.symvers
## The folowing compat_patch target is what we need to do to prepare a clean
# compat_patch set after new code is check-in to svn. To keep patches fuzzless.
# the new patches are writen into .new files so svn diff of next file will
# not trip on them.
compat_patch: $(unpatch_code)
test -z "$(svn diff|head)" || { \
echo "please run make compat_patch after changse are submited to svn"; \
exit 1; \
}
for the_patch in all_patches ; do \
make -C . has_$(the_patch); \
svn diff > ${!the_patch}.new; \
done
# the following is only for convienience
# do not submit to Linus
# it's also called from the toplevel makefile
# INSTALL_MOD_DIR is set so that the drivers go into the correct location using Kbuild
# it defaults to 'extra' otherwise
INSTALL_MOD_DIR ?= kernel/drivers/scsi
# this allows packaging of modules
ifdef DESTDIR
INSTALL_MOD_PATH=$(DESTDIR)
else
INSTALL_MOD_PATH=
endif
# this evil rule ensures that the modules get build if you specify $(ko)
# as a dependancy.
ko = $(patsubst %.o,%.ko,$(obj-m))
$(ko): all
# now the actual command
install_kernel: $(ko)
$(KBUILD_BASE) modules_install INSTALL_MOD_DIR=$(INSTALL_MOD_DIR) INSTALL_MOD_PATH=$(INSTALL_MOD_PATH)
dpkg_divert:
for module in $(ko) ; do \
dpkg-divert --rename /lib/modules/$(KERNELRELEASE)/$(INSTALL_MOD_DIR)/$$module ; \
done
# vim: ft=make tw=72 sw=4 ts=4:
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