#!/usr/bin/make -f

# enable verbose build messages
export DH_VERBOSE=1

# enable all build hardening flags
export DEB_BUILD_MAINT_OPTIONS=hardening=+all

# build with gcc instead of clang
defines=is_clang=false clang_use_chrome_plugins=false

# more verbose linker output
defines+=target_extra_ldflags=\"-Wl,--stats\"

# avoid error in v8's garbage collector (see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=68853)
defines+=target_extra_cxxflags=\"-fno-delete-null-pointer-checks -Wno-deprecated-declarations\"

# set the appropriate cpu architecture
DEB_HOST_ARCH ?= $(shell dpkg-architecture -qDEB_HOST_ARCH)
ifeq (i386,$(DEB_HOST_ARCH))
defines+=host_cpu=\"x86\"
endif
ifeq (amd64,$(DEB_HOST_ARCH))
defines+=host_cpu=\"x64\"
endif
ifeq (arm64,$(DEB_HOST_ARCH))
defines+=host_cpu=\"arm64\"
endif
ifeq (armhf,$(DEB_HOST_ARCH))
defines+=host_cpu=\"arm\" \
	 arm_use_neon=false
endif

# disabled features
defines+=is_debug=false \
         use_gtk3=false \
         use_ozone=false \
         use_gconf=false \
         use_sysroot=false \
         use_vulcanize=false \
         use_gnome_keyring=false \
         rtc_libvpx_build_vp9=false \
         treat_warnings_as_errors=false \
         enable_nacl=false \
         enable_nacl_nonsfi=false \
         enable_google_now=false \
         enable_hangout_services_extension=false \
         enable_iterator_debugging=false \
         gold_path=\"\" \
         linux_use_bundled_binutils=false \

# enabled features
defines+=use_gio=true \
         use_gold=true \
         use_pulseaudio=true \
         link_pulseaudio=true \
         enable_widevine=true \
	 use_system_freetype=true \
         proprietary_codecs=true \
         ffmpeg_branding=\"Chrome\" \
         fieldtrial_testing_like_official_build=true \

# some notes about embedded libraries
#  can't use system nss since net/third_party/nss is heavily patched
#  can't use system ots (open text *summarizer*) since that's not google's ots (open text *sanitizer*)

# handle parallel build options
ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
njobs=-j$(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
endif

# paths to files needed by flot
flotpaths=/usr/share/javascript/jquery/*min.js \
          /usr/share/javascript/jquery-flot/*min.js \

%:
	dh $@

override_dh_auto_configure:
	# output compiler information
	$(CXX) --version
	# use system flot
	for file in $(flotpaths); do ln -sf $$file third_party/flot; done
	# strip out system third_party libraries
	cp third_party/freetype/src/src/psnames/pstables.h .
	./debian/scripts/unbundle
	mkdir -p third_party/freetype/src/src/psnames
	mv pstables.h third_party/freetype/src/src/psnames
	# build gn
	./tools/gn/bootstrap/bootstrap.py -s $(njobs)
	# configure
	./out/Release/gn gen out/Release --args="$(defines)"

override_dh_auto_build-arch:
	./out/Release/gn gen out/Release --args="$(defines)"
	ninja $(njobs) -C out/Release chrome chrome_sandbox content_shell chromedriver
	mv out/Release/chrome out/Release/chromium || true
	mv out/Release/chrome.1 out/Release/chromium.1 || true
	mv out/Release/content_shell out/Release/chromium-shell || true
	mv out/Release/chrome_sandbox out/Release/chrome-sandbox || true
	mv out/Release/locales/en-US.pak out/Release/resources || true
	chmod 4755 out/Release/chrome-sandbox # suid sandbox

override_dh_auto_build-indep:
	ninja $(njobs) -C out/Release packed_resources
	rm -f out/Release/locales/en-US.pak

override_dh_auto_install-arch:
	dh_auto_install
	# create /etc/chromium.d README file
	echo "Any files placed in this directory will be sourced prior to executing chromium." \
	    > debian/chromium/etc/chromium.d/README
	# update launcher script with build information
	sed 's|@BUILD_DIST@|$(shell cat /etc/debian_version)|' \
	    < debian/scripts/chromium > debian/chromium/usr/bin/chromium
	# move icons into /usr/share
	for file in $(shell find chrome/app/theme/chromium -name product_logo_[0-9]* -a ! -name *mono*); do \
	    ext=$$(echo $$file | cut -d\. -f2); \
	    siz=$$(echo $$file | cut -d_ -f3 | sed s/\.$$ext//); \
	    dst=debian/chromium/usr/share/icons/hicolor/$$siz\x$$siz/apps; \
	    mkdir -p $$dst; \
	    cp $$file $$dst/chromium.$$ext; \
	    done

override_dh_fixperms:
	dh_fixperms --exclude chrome-sandbox

override_dh_strip:
	# skip dbgsym package for widevine to prevent duplication of the src package
	dh_strip -pchromium-widevine --no-automatic-dbgsym

override_dh_gencontrol:
	dh_gencontrol -- -VBuilt-Using="$(shell dpkg-query -f '$${source:Package} (= $${source:Version}), ' -W libjs-jquery libjs-jquery-flot)"

override_dh_auto_clean:
	rm -rf out
	find . -name \*.pyc -execdir rm -f {} \;
	dh_auto_clean

###################### upstream source downloading ############################

url=https://gsdview.appspot.com/chromium-browser-official
version=$(shell dpkg-parsechangelog -S Version | sed s/-.*//)
extract=chromium-$(version)
tarball=$(extract).tar.xz
debian=chromium-browser_$(version)
output=$(debian).orig.tar.xz
removed=$(debian).files-removed

get-orig-source:
	wget -nv --show-progress -c $(url)/$(tarball) -O ../$(tarball)
	/usr/bin/time --portability ./debian/scripts/mk-origtargz ../$(tarball) > ../$(removed)
	test ! -e $(extract) || rm -rf $(extract)
	/usr/bin/time --portability tar xaf ../$(tarball)
	while read line; do rm -rf $$line; done < ../$(removed)
	test ! -e ../$(output) || rm -f ../$(output)
	/usr/bin/time --portability tar caf ../$(output) $(extract)
	/usr/bin/time --portability rm -rf $(extract)
