#!/usr/bin/make -f
TESTDIR = $(shell dh_testdir || echo no)
ifeq (,$(TESTDIR))
include debian/make.mk
# Use dpkg-buildflags to get build flags, but exclude -g, that is dealt with
# via configure options.
dpkg_buildflags = $(and $(1),$(shell DEB_CFLAGS_MAINT_STRIP="-g" dpkg-buildflags --get $(1)))
$(call lazy,CFLAGS,$$(call dpkg_buildflags,CFLAGS))
$(call lazy,CPPFLAGS,$$(call dpkg_buildflags,CPPFLAGS))
$(call lazy,LDFLAGS,$$(call dpkg_buildflags,LDFLAGS))

$(call lazy,DEB_HOST_GNU_TYPE,$$(shell dpkg-architecture -qDEB_HOST_GNU_TYPE))
$(call lazy,DEB_BUILD_GNU_TYPE,$$(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE))
$(call lazy,DEB_BUILD_ARCH_BITS,$$(shell dpkg-architecture -qDEB_BUILD_ARCH_BITS))
$(call lazy,DEB_BUILD_ARCH,$$(shell dpkg-architecture -qDEB_BUILD_ARCH))
$(call lazy,DEB_HOST_ARCH,$$(shell dpkg-architecture -qDEB_HOST_ARCH))

PYTHON := PYTHONDONTWRITEBYTECODE=y python3

PRODUCT := browser
include debian/upstream.mk

SYSTEM_LIBS = zlib ffi
ifeq (,$(filter stretch buster bullseye,$(DIST)))
SYSTEM_LIBS += nspr nss vpx
endif
ifeq (,$(filter stretch buster,$(DIST)))
SYSTEM_LIBS += libevent
endif

define system_lib
USE_SYSTEM_$(1) ?= 1
SYSTEM_LIBS_VARS += $$(if $$(USE_SYSTEM_$(1)),USE_SYSTEM_$(1))
endef
$(foreach lib,$(sort $(call uc,$(SYSTEM_LIBS))),$(eval $(call system_lib,$(lib))))

OFFICIAL_BRANDING := browser/branding/official
MOZILLA_OFFICIAL := 1
# ESR, Beta and Releases use the official branding
ifneq (,$(filter release beta esr%,$(SHORT_SOURCE_CHANNEL)))
BRANDING ?= $(OFFICIAL_BRANDING)
else
ifneq (,$(filter aurora,$(SHORT_SOURCE_CHANNEL)))
BRANDING ?= browser/branding/aurora
else
ifneq (,$(filter central,$(SHORT_SOURCE_CHANNEL)))
BRANDING ?= browser/branding/nightly
else
$(error $(PRODUCT_NAME) branding for $(SOURCE_CHANNEL) is unsupported)
endif
endif
endif

ifeq (firefox-esr,$(DEBIAN_SOURCE))
ifneq (,$(filter stretch buster,$(DIST)))
TRANSITION = 1
endif
endif

COMMON_CONFIGURE_FLAGS += --target=$(DEB_HOST_GNU_TYPE)
COMMON_CONFIGURE_FLAGS += --host=$(DEB_BUILD_GNU_TYPE)
COMMON_CONFIGURE_FLAGS += --prefix=/usr
COMMON_CONFIGURE_FLAGS += --enable-project=$(PRODUCT)

COMMON_CONFIGURE_FLAGS += $(if $(filter $(BRANDING),$(OFFICIAL_BRANDING)),--enable-official-branding,--with-branding=$(BRANDING))

# Define PRODUCT, product and Product variables (replacing product with the
# actual value of $(PRODUCT))
$(PRODUCT) := $(call lc,$(PRODUCT_NAME))
uc_first = $(strip $(eval __tmp := $(1))$(foreach l,$(letters),$(eval __tmp := $(subst $(l),$(l) ,$(__tmp))))$(call uc,$(firstword $(__tmp)))$(1:$(firstword $(__tmp))%=%))
DISPLAY_NAME := $(call uc_first,$(PRODUCT_DOWNLOAD_NAME))$(if $(filter %-esr,$(PRODUCT_NAME)), ESR)
$(call uc,$(PRODUCT)) := $(call uc,$(DISPLAY_NAME))
Product := $(call uc_first,$(PRODUCT))
$(Product) := $(DISPLAY_NAME)

export MOZ_APP_REMOTINGNAME := $(call uc_first,$($(PRODUCT)))

LIB_DIR := /usr/lib/$($(PRODUCT))
SHARE_DIR := /usr/share/$($(PRODUCT))

# Work around https://github.com/rust-lang/cargo/issues/7147
export CARGO_HOME=$(CURDIR)/debian/.cargo

export MOZBUILD_STATE_PATH = $(CURDIR)/debian/.mozbuild

ifneq (,$(filter stretch,$(DIST)))
ifneq (,$(filter amd64 i386,$(DEB_HOST_ARCH)))
export NASM=/usr/lib/nasm-mozilla/bin/nasm
endif
export NODEJS=/usr/lib/nodejs-mozilla/bin/node
export PATH := /usr/lib/llvm-7/bin/:$(PATH)
export PATH := /usr/lib/gcc-mozilla/bin/:$(PATH)
LDFLAGS += -static-libstdc++
endif

LDFLAGS += -Wl,--as-needed
# Make the linker generate compressed debug sections. dh_strip would do
# the same anyways, but it allows elfhack to work in combination with
# unstripped binaries when they would normally be larger than 2GiB.
LDFLAGS += -Wl,--compress-debug-sections=zlib

# Disable debug symbols when building on 32-bits machines, because
# a) the rust compiler can't deal with it in the available address
# space, and b) the linker can't deal with it in the available address space
# either.
ifneq (64,$(DEB_BUILD_ARCH_BITS))
	CONFIGURE_FLAGS += --disable-debug-symbols
endif

# Reduce memory usage of the linker at the expense of processing time
# This should help on lower-end architectures like arm and mips, which
# spend an immense amount of time swapping.
LDFLAGS += -Wl,--reduce-memory-overheads
LDFLAGS += -Wl,--no-keep-memory
# Also add execution time and memory usage stats in the logs
LDFLAGS += -Wl,--stats

AUTOCONF_DIRS := build/autoconf

CONFIGURE_FLAGS += --enable-update-channel=$(CHANNEL)

ifneq (,$(filter noopt,$(DEB_BUILD_OPTIONS)))
	CONFIGURE_FLAGS += --disable-optimize
endif

ifneq (,$(filter debug,$(DEB_BUILD_OPTIONS)))
	CONFIGURE_FLAGS += --enable-debug
endif
ifneq (,$(filter %i386 %amd64 armel armhf arm64,$(DEB_HOST_ARCH)))
	MOZ_FFVPX = 1
endif
ifneq (,$(filter i386 amd64 armel armhf arm64,$(DEB_HOST_ARCH)))
	CRASH_REPORTER = 1
endif
ifneq (,$(filter mips%,$(DEB_HOST_ARCH)))
	CONFIGURE_FLAGS += --disable-webrtc
endif

ifeq (default,$(origin CC))
CC := gcc
endif
ifeq (default,$(origin CXX))
CXX := g++
endif

ifneq (,$(filter mips mipsel,$(DEB_HOST_ARCH)))
CONFIGURE_FLAGS += --disable-jit
endif

CXXFLAGS = $(CFLAGS)
RUSTFLAGS = --remap-path-prefix=$(CURDIR)=.

EXPORTS := CC CXX CFLAGS CXXFLAGS CPPFLAGS LDFLAGS MOZILLA_OFFICIAL RUSTFLAGS
$(call lazy,CONFIGURE_ENV,$$(foreach export,$(EXPORTS),$$(export)="$$($$(export))"))

IN_FILES := $(wildcard debian/*.in)
ifeq ($(PRODUCT_NAME),firefox)
IN_FILES := $(filter-out debian/browser.preinst.in debian/browser.postrm.in debian/$($(PRODUCT)).in,$(IN_FILES))
endif
preprocessed_filename = $(subst $(PRODUCT),$($(PRODUCT)),$(subst GRE_VERSION,$(GRE_VERSION),$(1:.in=)))
define preprocess
$(call preprocessed_filename,$(1)): $(1)
PREPROCESSED_FILES += $(call preprocessed_filename,$(1))
endef
$(foreach f,$(IN_FILES),$(eval $(call preprocess, $(f))))

GENERATED_FILES += $(PREPROCESSED_FILES) debian/l10n/$(PRODUCT)-l10n.control
debian/control: debian/rules debian/changelog debian/l10n/$(PRODUCT)-l10n.control

$(call lazy,L10N_PACKAGES,$$(foreach lang,$$(L10N_LANGS),$($(PRODUCT))-l10n-$$(call lc,$$(lang))))
$(call lazy,L10N_PACKAGES_DEPS,$$(shell echo $$(L10N_PACKAGES) | sed 's/ /, /g'))

debian/l10n/$(PRODUCT)-l10n.control: %: %.in
	PYTHONIOENCODING=utf-8 LC_ALL=C.UTF-8 $(PYTHON) debian/l10n/gen $(L10N_LANGS) > $@

$(call lazy,LIBAVCODEC,$$(shell awk -F\" '/libavcodec\.so\./ { sub(/libavcodec\.so\./,"", $$$$2); p = "libavcodec" $$$$2 " | libavcodec-extra" $$$$2; if (d) { d = d " | " p } else { d = p } } END { print d }' dom/media/platforms/ffmpeg/FFmpegRuntimeLinker.cpp))

$(PREPROCESSED_FILES): VARS = GRE_VERSION PRODUCT_DOWNLOAD_NAME $(PRODUCT) $(call uc,$(PRODUCT)) $(Product) MOZ_APP_REMOTINGNAME $(SYSTEM_LIBS_VARS) SHORT_SOURCE_CHANNEL DIST TRANSITION MOZ_FFVPX CRASH_REPORTER DEB_HOST_ARCH
debian/control: VARS += L10N_PACKAGES_DEPS PRODUCT LIBAVCODEC
$(PREPROCESSED_FILES):
	MOZ_OBJDIR=debian/objdir MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none $(PYTHON) ./mach python python/mozbuild/mozbuild/preprocessor.py --marker % -Fsubstitution $(foreach var,$(VARS),-D$(var)="$($(var))" )$< -o $@

ifdef TRANSITION
MAINTSCRIPTS := $(addprefix debian/,$(addsuffix .maintscript,$(shell awk -F/ '$$1 != "searchplugins" { next } $$2 == "locale" && $$3 != "en-US" { p="iceweasel-l10n-" $$3 } $$2 == "common" || ($$2 "/" $$3 == "locale/en-US") { p="iceweasel" } !done[p] { print p; done[p] = 1 }' debian/removed_conffiles)))

GENERATED_FILES += $(MAINTSCRIPTS)

debian/iceweasel.maintscript: debian/removed_conffiles
	(grep -v searchplugins/locale $<; grep searchplugins/locale/en-US $<) | awk '{print "rm_conffile /etc/iceweasel/" $$0, "45.0esr-2~", "iceweasel"}' > $@

debian/iceweasel-l10n-%.maintscript: debian/removed_conffiles
	grep -i searchplugins/locale/$* $< | awk '{print "rm_conffile /etc/iceweasel/" $$0, "45.0esr-2~", "iceweasel-l10n-$*"}' > $@
endif

override_dh_auto_configure:

configure js/src/configure:
	cp -f $@.in $@ && chmod +x $@
	echo $@ >> debian/extra-clean

stamps/prepare-configure:: stamps/dummy configure js/src/configure
	for dir in $(AUTOCONF_DIRS); do \
		for file in config.guess config.sub; do \
			sed -i '2!b;/^#/ i\exec "/usr/share/misc/'$$file'" "$$@"' $$dir/$$file; \
		done; \
	done

stamps/configure-check-$(PRODUCT):: stamps/configure-$(PRODUCT)
# Ensure --{with,enable}-system options properly set expected variables
# according to the definitions in the mozconfig file.
	@awk -F' *# *| *$$' ' \
	BEGIN { confs="$(foreach f,autoconf.mk emptyvars.mk,$(CURDIR)/build-$(PRODUCT)/config/$(f))" } \
	$$1 ~ /system-/ { \
		if (! $$2) { \
			print FILENAME ": Missing variable for",$$1; \
			error=1; \
		} else { \
			split($$2,var,"="); \
			cmd = "grep -l " var[1] " " confs; \
			cmd | getline dir; \
			sub(/\/[^\/]*$$/, "", dir); \
			cmd = "$(MAKE) -C " dir " --no-print-directory echo-variable-" var[1]; \
			cmd | getline value; \
			if (value != var[2]) { print $$1, "triggered", var[1] "=" value,"instead of",$$2; error=1 } \
		} \
	} \
	END { if (error) { exit 1 }}' debian/$($(PRODUCT)).mozconfig

stamps/configure-$(PRODUCT):: stamps/prepare-configure debian/$($(PRODUCT)).mozconfig
ifeq (armhf,$(DEB_BUILD_ARCH))
ifeq (,$(shell grep -l cpu:type:aarch64 /sys/devices/system/cpu/modalias))
	# There is not enough memory in armhf userspace with a 32-bits kernel.
	$(error Unfortunately cannot build on armhf. Try a 64-bits kernel)
endif
endif
ifeq (mipsel,$(DEB_BUILD_ARCH))
	# There is not enough memory in mipsel userspace with neither a 32-bits nor 64-bits kernel.
	$(error Unfortunately cannot build on mipsel. Try cross-compilation)
endif
	$(if $(wildcard build-$(PRODUCT)),,mkdir build-$(PRODUCT))
	cd build-$(PRODUCT) && \
	MOZCONFIG=$(CURDIR)/debian/$($(PRODUCT)).mozconfig \
	ASFLAGS="-g" \
	$(CONFIGURE_ENV) \
	$(CURDIR)/configure \
		$(COMMON_CONFIGURE_FLAGS) \
		$(CONFIGURE_FLAGS)

# Use thinLTO on armhf, to stay in the memory budget with an armhf toolchain.
ifeq (armhf,$(DEB_BUILD_ARCH))
export DEBIAN_RUST_LTO=-Clto=thin
endif

stamps/build-$(PRODUCT):: stamps/configure-check-$(PRODUCT)
	+dh_auto_build --parallel --builddirectory=build-$(PRODUCT) -- \
		_LEAKTEST_FILES=leaktest.py

L10N_BUILD_STAMPS = $(foreach lang,$(L10N_LANGS),stamps/build-l10n-$(lang))
stamps/build-l10n:: $(L10N_BUILD_STAMPS)

$(L10N_BUILD_STAMPS):: stamps/build-l10n-%: stamps/prepare-configure
	$(if $(wildcard build-l10n/$*),,mkdir -p build-l10n/$*)
	$(if $(wildcard l10n),,mkdir -p l10n)
	cd build-l10n/$* && \
	$(CONFIGURE_ENV) \
	$(CURDIR)/configure \
		$(COMMON_CONFIGURE_FLAGS) \
		--disable-compile-environment \
		--with-l10n-base=$(CURDIR)/l10n

	$(if $(wildcard l10n/$*),,ln -sf ../l10n-$* l10n/$*)
	MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=none $(MAKE) -C build-l10n/$*/$(PRODUCT)/locales langpack-$* MOZ_CHROME_FILE_FORMAT=flat MOZ_LANGPACK_EID=langpack-$*@$($(PRODUCT)).mozilla.org PKG_LANGPACK_BASENAME='$$(MOZ_LANGPACK_EID)' PKG_LANGPACK_PATH=xpi/

override_dh_auto_build-arch: stamps/build-$(PRODUCT)

override_dh_auto_build-indep: stamps/build-l10n

ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
# Disable tests on stable-security
ifeq (,$(findstring ~deb,$(DEBIAN_RELEASE)))
# Disable tests until they're fixed
#include debian/test.mk
endif
endif

override_dh_auto_clean::
	rm -f $(filter-out debian/control debian/watch,$(GENERATED_FILES))
	rm -f $$(cat debian/extra-clean 2>/dev/null) debian/extra-clean old-configure js/src/old-configure
	rm -rf stamps l10n $(CARGO_HOME)
	debian/rules debian/control TESTDIR=

	dh_auto_clean --builddirectory=build-$(PRODUCT)
	dh_auto_clean --builddirectory=build-l10n
	find . -name "*.pyc" -o -name "*.pyo" | xargs --no-run-if-empty rm -f
	rm -rf debian/objdir $(MOZBUILD_STATE_PATH)

override_dh_clean:
	dh_clean -XCargo.toml.orig
	for dir in $(AUTOCONF_DIRS); do \
		for file in config.guess config.sub; do \
			sed -i '2!b;/^exec "/ d' $$dir/$$file; \
		done; \
	done

override_dh_auto_install-arch: stamps/install-$(PRODUCT)
override_dh_auto_install-indep:

stamps/install-$(PRODUCT)::
	dh_auto_install --builddirectory=build-$(PRODUCT) -- installdir=$(LIB_DIR) \
		MOZ_APP_BASE_VERSION=$(GRE_VERSION) \
		TAR_CREATE_FLAGS="--exclude=.mkdir.done --hard-dereference -chf" \
		SIGN_NSS=

	-TZ=UTC unzip -d debian/tmp$(LIB_DIR)/browser debian/tmp$(LIB_DIR)/browser/omni.ja 'defaults/preferences/*'

L10N_DH_INSTALL_STAMPS = $(foreach lang,$(L10N_LANGS),stamps/dh_install-l10n-$(lang))
stamps/dh_install-l10n:: $(L10N_DH_INSTALL_STAMPS)

$(L10N_DH_INSTALL_STAMPS):: stamps/dh_install-l10n-%: stamps/build-l10n-%
	dh_install -p$($(PRODUCT))-l10n-$(call lc,$*) build-l10n/$*/dist/xpi/langpack-$*@$($(PRODUCT)).mozilla.org.xpi $(LIB_DIR)/browser/extensions/

stamps/dh_install:: debian/noinstall debian/$($(PRODUCT))-symbolic.svg
	awk '{print "debian/tmp/" $$1 }' < debian/noinstall | xargs rm -r
	dh_install --fail-missing

override_dh_install-arch: stamps/dh_install
override_dh_install-indep: stamps/dh_install-l10n

override_dh_strip:
	dh_strip --dbgsym-migration='$($(PRODUCT))-dbg (<< 49.0-4~)'

override_dh_strip_nondeterminism:

override_dh_shlibdeps:
	dh_shlibdeps -a -l$(CURDIR)/debian/tmp$(LIB_DIR) -- -xlibgtk2.0-0

ifdef TRANSITION
override_dh_gencontrol-indep:
	dh_gencontrol$(foreach pkg,$(subst $($(PRODUCT)),iceweasel,$(L10N_PACKAGES)) iceweasel-l10n-all, -p$(pkg)) -- -v1:$(DEBIAN_VERSION)
	dh_gencontrol$(foreach pkg,$(subst $($(PRODUCT)),iceweasel,$(L10N_PACKAGES)) iceweasel-l10n-all, -N$(pkg))
endif

# We're dealing with this manually and we don't want config.* files being touched under third_party/rust.
override_dh_update_autotools_config:

install binary binary-arch binary-indep: $(filter-out %.pc,$(GENERATED_FILES))

binary binary-arch binary-indep build build-arch build-indep clean install:
	debian/dh $@

.PHONY: build clean binary-indep binary-arch binary install

$(eval ALL_STAMPS := $(shell awk -F:: '$$1 ~ /^stamps\// && !/%/ { print $$1 }' debian/rules) stamps/dummy $(L10N_BUILD_STAMPS) $(L10N_DH_INSTALL_STAMPS))
$(ALL_STAMPS)::
	@mkdir -p stamps
	$(if $(wildcard $@),,touch $@)
endif