#!/usr/bin/make -f
# See debhelper(7) (uncomment to enable)
# output every command that modifies files on the build system.
#export DH_VERBOSE = 1


# see FEATURE AREAS in dpkg-buildflags(1)
export DEB_BUILD_MAINT_OPTIONS = hardening=+all

# see ENVIRONMENT in dpkg-buildflags(1)
# package maintainers to append CFLAGS
#export DEB_CFLAGS_MAINT_APPEND  = -Wall -pedantic
# package maintainers to append LDFLAGS
export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed

# Normal situation
#VNC_PATCH = $(CURDIR)/unix/xserver120.patch
# However in this case we do not have this file from upstream so we use a
# debian specific copy instead.
VNC_PATCH = $(CURDIR)/debian/xserver121.patch

VNC_LIBTOOL_PATCH = $(CURDIR)/contrib/packages/deb/ubuntu-xenial/debian/xorg-source-patches/debian_libtool.patch

include /usr/share/dpkg/architecture.mk
include /usr/share/dpkg/buildflags.mk

# This is stolen from xorg-server/debian/xsfbs/xsfbs.mk
# Determine (source) package name from Debian changelog.
SOURCE_NAME:=$(shell dpkg-parsechangelog -SSource)

# Determine package version from Debian changelog.
SOURCE_VERSION:=$(shell dpkg-parsechangelog -SVersion)

# Determine package date from Debian changelog.
BUILD_TIMESTAMP:=$(shell dpkg-parsechangelog -SDate | date -u -f- '+%Y-%m-%d %H:%M')
export BUILD_TIMESTAMP

# Strip a possible epoch marker from source version.
NO_EPOCH_VER:=$(shell echo $(SOURCE_VERSION) | sed 's/^.://')

# Determine upstream version number for make get-orig-source
UPSTREAM_DFSG_VERSION:=$(shell echo $(NO_EPOCH_VER) | sed 's/-.*//')

# Determine upstream version number.
UPSTREAM_VERSION:=$(shell echo $(UPSTREAM_DFSG_VERSION) | cut -d"+" -f1)

DEB_DESTDIR := $(CURDIR)/debian/tmp

TIGERVNC_SRCDIR		:= $(CURDIR)
TIGERVNC_BUILDDIR	:= $(CURDIR)/obj-$(DEB_HOST_MULTIARCH)

XTIGERVNC_SRCDIR	:= $(CURDIR)/unix/xserver
XTIGERVNC_BUILDDIR	:= $(CURDIR)/obj-$(DEB_HOST_MULTIARCH)/unix/xserver

# Work around bug #641051 (See https://bugs.debian.org/641051)
DEB_CMAKE_EXTRA_FLAGS	:= -DCMAKE_LIBRARY_PATH=$(DEB_HOST_MULTIARCH)

#DEB_CMAKE_EXTRA_FLAGS	+= -DENABLE_LIBWRAP:BOOL=ON
DEB_CMAKE_EXTRA_FLAGS	+= -DENABLE_NLS:BOOL=ON
DEB_CMAKE_EXTRA_FLAGS	+= -DENABLE_GNUTLS:BOOL=ON
DEB_CMAKE_EXTRA_FLAGS	+= -DENABLE_PAM:BOOL=ON
#DEB_CMAKE_EXTRA_FLAGS	+= -DBUILD_JAVA=1
DEB_CMAKE_EXTRA_FLAGS   += -DBUILD_TIMESTAMP="$(BUILD_TIMESTAMP)"

# Unfortunately quoting in /usr/share/xserver-xorg/configure_flags.mk is fucked
# up in buster and ${xxx} is not escaped correctly.
xserver_confflags := $(shell cat /usr/share/xserver-xorg/configure_flags.mk | \
  sed -ne '/^xserver_confflags\s*=/{s/^[^=]*=//;s/--with-builderstring="[^"]*"//;p}')

#-include /usr/share/xserver-xorg/configure_flags.mk
#xserver_confflags := $(shell echo '$(xserver_confflags)' | sed 's/--with-builderstring="[^"]*"//')

XORG_DEBIAN_CONFIGURE_FLAGS := \
	$(filter-out \
		--prefix=% \
		--mandir=% \
		--infodir=% \
		--sysconfdir=% \
		--localstatedir=% \
		--build=% \
		--host=% \
		--enable-xwayland \
		--enable-dmx \
		--enable-xvfb \
		--enable-xnest \
		--enable-xephyr \
		--enable-xorg \
		--enable-dri \
		--enable-dri2 \
		--enable-dri3 \
		--enable-xmir \
	    , $(xserver_confflags) \
	)

DEB_CONFIGURE_EXTRA_FLAGS := \
	--disable-selective-werror \
	--with-builderstring="tigervnc-xorg-server $(NO_EPOCH_VER) (TigerVNC Packaging Team <pkg-tigervnc-devel@lists.alioth.debian.org>)" \
	--disable-xwayland \
	--disable-dmx \
	--disable-xvfb \
	--disable-xnest \
	--disable-xephyr \
	--disable-xorg \
	--disable-dri \
	--disable-dri2 \
	--disable-dri3

# Don't use libunwind for armel, armhf, and arm64 as this library is buggy
# (bug #923962) on those architectures.
ifneq (,$(filter $(DEB_HOST_ARCH), armel armhf arm64))
	DEB_CONFIGURE_EXTRA_FLAGS += --disable-libunwind
	XORG_DEBIAN_CONFIGURE_FLAGS := \
	    $(filter-out --enable-libunwind, $(XORG_DEBIAN_CONFIGURE_FLAGS))
endif
DEB_CONFIGURE_EXTRA_FLAGS += \
	CPPFLAGS='$(CPPFLAGS) -DBUILD_TIMESTAMP="\"$${BUILD_TIMESTAMP}\""'

.PHONY: debug-debian-rules
debug-debian-rules:
	@echo '$$(SOURCE_NAME) $(SOURCE_NAME)'
	@echo '$$(BUILD_TIMESTAMP) $(BUILD_TIMESTAMP)'
	@echo '$$(SOURCE_VERSION) $(SOURCE_VERSION)'
	@echo '$$(NO_EPOCH_VER) $(NO_EPOCH_VER)'
	@echo '$$(UPSTREAM_DFSG_VERSION) $(UPSTREAM_DFSG_VERSION)'
	@echo '$$(UPSTREAM_VERSION) $(UPSTREAM_VERSION)'
	@echo '$$(TIGERVNC_SRCDIR) $(TIGERVNC_SRCDIR)'
	@echo '$$(TIGERVNC_BUILDDIR) $(TIGERVNC_BUILDDIR)'
	@echo '$$(XTIGERVNC_SRCDIR) $(XTIGERVNC_SRCDIR)'
	@echo '$$(XTIGERVNC_BUILDDIR) $(XTIGERVNC_BUILDDIR)'
	@echo '$$(DEB_HOST_ARCH) $(DEB_HOST_ARCH)'
	@echo '$$(DEB_HOST_MULTIARCH) $(DEB_HOST_MULTIARCH)'
	@echo '$$(XORG_DEBIAN_CONFIGURE_FLAGS) $(XORG_DEBIAN_CONFIGURE_FLAGS)'
	@echo '$$(DEB_CMAKE_EXTRA_FLAGS) $(DEB_CMAKE_EXTRA_FLAGS)'
	@echo '$$(DEB_CONFIGURE_EXTRA_FLAGS) $(DEB_CONFIGURE_EXTRA_FLAGS)'
	@echo '$$(DEB_DESTDIR) $(DEB_DESTDIR)'

.PHONY: override_dh_autoreconf
override_dh_autoreconf:
	dh_autoreconf
	cd $(XTIGERVNC_SRCDIR) && { \
	    patch --no-backup-if-mismatch -p1 < $(VNC_LIBTOOL_PATCH); \
	  }

.PHONY: override_dh_auto_configure
override_dh_auto_configure:
	dh_auto_configure -D$(TIGERVNC_SRCDIR) -B$(TIGERVNC_BUILDDIR) -- \
		$(DEB_CMAKE_EXTRA_FLAGS)
	dh_auto_configure -D$(XTIGERVNC_SRCDIR) -B$(XTIGERVNC_BUILDDIR) -- \
		$(XORG_DEBIAN_CONFIGURE_FLAGS) \
		$(DEB_CONFIGURE_EXTRA_FLAGS)

.PHONY: override_dh_auto_build
override_dh_auto_build:
	dh_auto_build -D$(TIGERVNC_SRCDIR) -B$(TIGERVNC_BUILDDIR)
	dh_auto_build -D$(XTIGERVNC_SRCDIR) -B$(XTIGERVNC_BUILDDIR)

.PHONY: override_dh_auto_install
override_dh_auto_install:
	dh_auto_install -D$(TIGERVNC_SRCDIR) -B$(TIGERVNC_BUILDDIR)
	dh_auto_install -D$(XTIGERVNC_SRCDIR) -B$(XTIGERVNC_BUILDDIR)
	mv $(DEB_DESTDIR)/usr/share/doc/tigervnc \
	  $(DEB_DESTDIR)/usr/share/doc/tigervnc-common
	mv $(DEB_DESTDIR)/usr/bin/vncviewer \
	  $(DEB_DESTDIR)/usr/bin/xvncviewer
	mv $(DEB_DESTDIR)/usr/share/man/man1/vncviewer.1 \
	  $(DEB_DESTDIR)/usr/share/man/man1/xvncviewer.1
	mv $(DEB_DESTDIR)/usr/bin/x0vncserver \
	  $(DEB_DESTDIR)/usr/bin/X0vnc
	mv $(DEB_DESTDIR)/usr/share/man/man1/x0vncserver.1 \
	  $(DEB_DESTDIR)/usr/share/man/man1/X0vnc.1
	mv $(DEB_DESTDIR)/usr/share/applications/vncviewer.desktop \
	  $(DEB_DESTDIR)/usr/share/applications/xvncviewer.desktop
	mkdir -p $(DEB_DESTDIR)/usr/share/icons/hicolor/scalable/apps
	cp media/icons/tigervnc.svg \
	  $(DEB_DESTDIR)/usr/share/icons/hicolor/scalable/apps/
	for i in 16 22 24 32 48; do \
	  mkdir -p $(DEB_DESTDIR)/usr/share/icons/hicolor/$${i}x$${i}/apps; \
	  cp media/icons/tigervnc_$${i}.png \
	    $(DEB_DESTDIR)/usr/share/icons/hicolor/$${i}x$${i}/apps/tigervnc.png; \
	done
	# Hack, replace media/icons/tigervnc_16.png of wrong dimensions 20x20 by our fixed version.
	cp debian/tigervnc_16.png \
	  $(DEB_DESTDIR)/usr/share/icons/hicolor/16x16/apps/tigervnc.png
	cd $(DEB_DESTDIR) && \
	  find usr/bin usr/sbin usr/lib/systemd/system usr/libexec usr/share/man usr/share/applications -name "*vnc*" | \
	  while read line; do \
	    echo Rename "$$line" `echo "$$line" | sed -e 's/vnc/tigervnc/g'` ; \
	    mv "$$line" `echo "$$line" | sed -e 's/vnc/tigervnc/g'`; \
	  done
	# Fixup org.tigervnc.vncviewer.metainfo.xml
	sed -i \
	  -e 's/<release version="\([0-9.]\+\)"/<release version="\1+dfsg"/' \
	  -e 's/<launchable type="desktop-id">vncviewer.desktop<\/launchable>/<launchable type="desktop-id">xtigervncviewer.desktop<\/launchable>/' \
	  $(DEB_DESTDIR)/usr/share/metainfo/org.tigervnc.vncviewer.metainfo.xml
	cp -pr debian/helpers/* \
	  debian/tmp
	find debian/tmp/usr/share/man -type f | while read line; do \
	  echo "Rewriting and renaming $$line into $$line.gz" ; \
	  sed -e 's/\(\<\|\\f[IBP]\)vncviewer\>/\1xtigervncviewer/g' \
	      -e 's/\(\<\|\\f[IBP]\)vncpasswd\>/\1tigervncpasswd/g' \
	      -e 's/\(\<\|\\f[IBP]\)vncconfig\>/\1tigervncconfig/g' \
	      -e 's/\(\<\|\\f[IBP]\)vncserver\>/\1tigervncserver/g' \
	      -e 's/\(\<\|\\f[IBP]\)vncsession\>/\1tigervncsession/g' \
	      -e 's/\(\<\|\\f[IBP]\)X0VNCSERVER\>/\1X0tigervnc/g' \
	      -e 's/\(\<\|\\f[IBP]\)x0vncserver\>/\1X0tigervnc/g' \
	      -e 's/\(\<\|\\f[IBP]\)Xvnc\>/\1Xtigervnc/g' \
	      -e 's/\(\<\|\\f[IBP]\)tigervnc\/tigervnc/\1tigervnc\/vnc/g' \
	      $$line | \
	    gzip -9 > $$line.gz; \
	  rm -f $$line; \
	done
	touch $@

.PHONY: override_dh_auto_clean
override_dh_auto_clean:
	dh_auto_clean -D$(TIGERVNC_SRCDIR) -B$(TIGERVNC_BUILDDIR)
	dh_auto_clean -D$(XTIGERVNC_SRCDIR) -B$(XTIGERVNC_BUILDDIR)

build build-arch build-indep: patch
clean: unpatch

%:
	dh $@

.PHONY: patch
patch: apply-vnc-patch-xorg
apply-vnc-patch-xorg: apply-unify-xorg-and-vnc-tree

.PHONY: unpatch
unpatch: reverse-unify-xorg-and-vnc-tree
reverse-unify-xorg-and-vnc-tree: reverse-vnc-patch-xorg

.PHONY: apply-vnc-patch-xorg reverse-vnc-patch-xorg

apply-vnc-patch-xorg: unix/xserver/.apply-vnc-patch-xorg.stamp

unix/xserver/.apply-vnc-patch-xorg.stamp: $(VNC_PATCH)
	cd $(XTIGERVNC_SRCDIR) && { \
		patch --no-backup-if-mismatch -p1 < $(VNC_PATCH) && \
		touch .apply-vnc-patch-xorg.stamp; \
	}

reverse-vnc-patch-xorg: $(VNC_PATCH)
	cd $(XTIGERVNC_SRCDIR) && if test -f .apply-vnc-patch-xorg.stamp; then \
		patch --no-backup-if-mismatch -R -p1 < $(VNC_PATCH); \
		rm -f .apply-vnc-patch-xorg.stamp; \
	fi

.PHONY: apply-unify-xorg-and-vnc-tree reverse-unify-xorg-and-vnc-tree

apply-unify-xorg-and-vnc-tree: unix/xserver/.apply-unify-xorg-and-vnc-tree.stamp

unix/xserver/.apply-unify-xorg-and-vnc-tree.stamp:
	cd $(XTIGERVNC_SRCDIR) && \
	  { tar --strip-components 1 -xvJf /usr/src/xorg-server.tar.xz | \
	      sed -e 's@^[^/]*/@@' > .apply-unify-xorg-and-vnc-tree.files; } && \
	  touch .apply-unify-xorg-and-vnc-tree.stamp

reverse-unify-xorg-and-vnc-tree: override_dh_auto_clean
	cd $(XTIGERVNC_SRCDIR) && \
		if test -f .apply-unify-xorg-and-vnc-tree.files; then \
			sort -r < .apply-unify-xorg-and-vnc-tree.files | \
				while read line; do \
					if test -d "$$line"; then \
						rmdir --ignore-fail-on-non-empty "$$line"; \
					else \
						rm -f "$$line"; \
					fi; \
				done; \
			rm -f .apply-unify-xorg-and-vnc-tree.stamp \
			      .apply-unify-xorg-and-vnc-tree.files; \
		fi