#!/usr/bin/make -f

include /usr/share/dpkg/pkg-info.mk

NAME := spl
VERSION := $(DEB_VERSION_UPSTREAM)
REVISION := $(shell echo $(DEB_VERSION) | cut -d- -f2)
LINUX_NEXT := $(shell awk -F. '{print $$1 "." $$2+1}' debian/linux_compat)

export DEB_BUILD_MAINT_OPTIONS = hardening=+all
DEB_HOST_ARCH ?= $(shell dpkg-architecture -qDEB_HOST_ARCH)

ifndef KVERS
KVERS=$(shell uname -r)
endif

non_epoch_version=$(shell echo $(KVERS) | perl -pe 's/^\d+://')
pmodules = $(NAME)-modules-$(non_epoch_version)

%:
	dh $@ --with dkms,autoreconf --parallel

override_dh_auto_configure:
	sed "s/@LINUX_COMPAT@/linux-libc-dev \(<< $(LINUX_NEXT)~\)/" debian/control.in > debian/control

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

	@# Build the userland, but don't build the kernel modules.
	dh_auto_configure -- --with-config=user --disable-debug-kmem

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'

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

	@# 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/'

override_dh_dkms:
	dh_dkms -V $(VERSION)

override_dh_auto_clean:
	dh_auto_clean
	@if test -e META.orig; then mv META.orig META; fi
	sed "s/@LINUX_COMPAT@/linux-libc-dev \(<< $(LINUX_NEXT)~\)/" debian/control.in > debian/control

# ------------

override_dh_prep-deb-files:
	for templ in $(wildcard $(CURDIR)/debian/*_KVERS_*.in); do \
		sed -e 's/##KVERS##/$(KVERS)/g ; s/#KVERS#/$(KVERS)/g ; s/_KVERS_/$(KVERS)/g ; s/##KDREV##/$(KDREV)/g ; s/#KDREV#/$(KDREV)/g ; s/_KDREV_/$(KDREV)/g ;  s/_ARCH_/$(DEB_HOST_ARCH)/g' \
		< $$templ > `echo $$templ | sed -e 's/_KVERS_/$(KVERS)/g ; s/_ARCH_/$(DEB_HOST_ARCH)/g ; s/\.in$$//'` ; \
	done
	sed -e 's/##KVERS##/$(KVERS)/g ; s/#KVERS#/$(KVERS)/g ; s/_KVERS_/$(KVERS)/g ; s/##KDREV##/$(KDREV)/g ; s/#KDREV#/$(KDREV)/g ; s/_KDREV_/$(KDREV)/g ; s/_ARCH_/$(DEB_HOST_ARCH)/g' \
	< debian/control.modules.in > debian/control

override_dh_configure_modules: override_dh_configure_modules_stamp
override_dh_configure_modules_stamp:
	./configure --with-config=kernel --with-linux=$(KSRC) \
		--with-linux-obj=$(KOBJ) \
		--disable-debug-kmem
	touch override_dh_configure_modules_stamp

override_dh_binary-modules-udeb: override_dh_prep-deb-files override_dh_configure_modules
	dh_testdir
	dh_testroot
	dh_prep

	$(MAKE) -C $(CURDIR)/module modules

	dh_installdirs -p${pmodules}-di
	dh_install -p${pmodules}-di
	dh_gencontrol -p${pmodules}-di

	dh_builddeb -p${pmodules}-di

override_dh_binary-modules: override_dh_prep-deb-files override_dh_configure_modules
	dh_testdir
	dh_testroot
	dh_prep

	$(MAKE) -C $(CURDIR)/module modules

	dh_installdocs -p${pmodules}
	dh_install -p${pmodules}
	dh_installchangelogs -p${pmodules}
	dh_compress -p${pmodules}
	dh_strip -p${pmodules}
	dh_fixperms -p${pmodules}
	dh_installdeb -p${pmodules}
	dh_gencontrol -p${pmodules}
	dh_md5sums -p${pmodules}

	dh_builddeb -p${pmodules}