#!/usr/bin/make -f

NAME := $(shell awk '$$1 == "Name:" { print $$2; }' META)
VERSION := $(shell dpkg-parsechangelog \
  | awk '$$1 == "Version:" { print $$2; }' | cut -d- -f1)
REVISION := $(shell dpkg-parsechangelog \
  | awk '$$1 == "Version:" { print $$2; }' | cut -d- -f2-)

%:
	dh $@ --with autoreconf

override_dh_auto_configure:
	@# Embed the downstream version in the module.
	@sed \
	  -e 's/^Version:.*/Version:      $(VERSION)/' \
	  -e 's/^Release:.*/Release:      $(REVISION)/' \
	  -i.orig META

	@# Create the makefiles and configure script.
	./autogen.sh

	@# Build the userland, but don't build the kernel modules.
	dh_auto_configure -- --with-config=user
	
override_dh_auto_test:
	# scripts/check.sh tries insmod and rmmod, so it cannot
	# run in an unprivileged build environment.

override_dh_auto_install:
	@# Install the utilities.
	make install DESTDIR='$(CURDIR)/debian/tmp'

	@# Create a dummy hostid file for the zfs-initramfs package.
	@# NB: Commentary in the spl.postinst script.
	mkdir -p '$(CURDIR)/debian/tmp/etc/'
	/usr/bin/printf '\xFF\xFF\xFF\xFF' >'$(CURDIR)/debian/tmp/etc/hostid'

	@# Get a bare copy of the source code.
	@# This creates the $(CURDIR)/$(NAME)-$(VERSION)/ tree.
	make distdir

	@# Delete boilerplate to satisfy the lintian extra-license-file check.
	rm '$(CURDIR)/$(NAME)-$(VERSION)/COPYING'

	@# This shunt allows DKMS to install the Module.symvers and spl_config.h
	@# files to the ${dkms_tree} area through the POST_INSTALL directive.
	echo '#!/bin/sh'  >'$(CURDIR)/$(NAME)-$(VERSION)/cp'
	echo 'cp "$$@"'  >>'$(CURDIR)/$(NAME)-$(VERSION)/cp'
	chmod 755 '$(CURDIR)/$(NAME)-$(VERSION)/cp'

	# Install the DKMS source.
	mkdir -p '$(CURDIR)/debian/tmp/usr/src/'
	mv '$(CURDIR)/$(NAME)-$(VERSION)' '$(CURDIR)/debian/tmp/usr/src/'

	# Install the dkms.conf file.
	dh_dkms -V $(VERSION)

override_dh_auto_clean:
	dh_auto_clean
	@if test -e META.orig; then mv META.orig META; fi

%:
	dh $@