#!/usr/bin/make -f

# resolve DEB_VERSION
include /usr/share/dpkg/pkg-info.mk

export DEB_BUILD_MAINT_OPTIONS = hardening=+all
export DEB_CFLAGS_MAINT_APPEND  = -Wall -pedantic
export DEB_CXXFLAGS_MAINT_APPEND  = -Wall -pedantic

# trust upstream optimization level unless explicitly disabled
ifeq (,$(filter noopt,$(DEB_BUILD_OPTIONS)))
export DEB_CFLAGS_MAINT_STRIP=-O2
export DEB_CXXFLAGS_MAINT_STRIP=-O2
endif

# generate documentation unless nodoc requested
ifeq (,$(filter nodoc,$(DEB_BUILD_OPTIONS)))
DOCS = README.html README.txt
CHANGELOGS = CHANGELOG.html CHANGELOG.txt
MANPAGES = debian/rsass.1
endif

# reduce risk of out-of-memory issues during build for weak arches
ifneq (,$(filter $(DEB_HOST_ARCH),armel armhf i386 mipsel riscv64))
export RUSTFLAGS += -C embed-bitcode=no -C lto=no -C linker-plugin-lto=no
endif

# Fails on i386 since 0.28.2: <https://github.com/kaj/rsass/issues/182>
ifneq (,$(filter $(DEB_HOST_ARCH_CPU),i386))
TEST_FLAKY += \
 core_functions::math::log::base::one_fuzzy
endif

# Fails on i386 since 0.29.0: <https://github.com/kaj/rsass/issues/209>
ifneq (,$(filter $(DEB_HOST_ARCH_CPU),i386))
TEST_FLAKY += \
 variablescope::test::color_simple_rgba \
 core_functions::color::adjust::hsl::alpha_input \
 core_functions::color::adjust::hwb::alpha_input \
 core_functions::color::adjust::rgb::alpha_arg \
 core_functions::color::adjust::rgb::alpha_input \
 core_functions::color::adjust::units::alpha::percent \
 core_functions::color::adjust::units::alpha::unitless \
 core_functions::color::adjust::units::alpha::unknown \
 core_functions::color::change::hsl::alpha_arg \
 core_functions::color::change::hsl::alpha_input \
 core_functions::color::change::hwb::alpha_arg \
 core_functions::color::change::hwb::alpha_input \
 core_functions::color::change::rgb::alpha_arg \
 core_functions::color::change::rgb::alpha_input \
 core_functions::color::complement::alpha \
 core_functions::color::desaturate::alpha \
 core_functions::color::grayscale::legacy::alpha \
 core_functions::color::mix::alpha::even \
 core_functions::color::mix::both_weights::transparent::last \
 core_functions::color::mix::both_weights::weighted::last \
 core_functions::color::rgb::four_args::in_gamut::named \
 core_functions::color::rgb::one_arg::alpha::in_gamut::named \
 core_functions::color::rgb::one_arg::alpha::in_gamut::parenthesized \
 core_functions::color::scale::hsl::alpha_input \
 core_functions::color::scale::hwb::alpha_input \
 core_functions::color::scale::rgb::alpha_input \
 core_functions::meta::get_function::same_module::plain_css \
 libsass::color_functions::other::change_color::a::test \
 libsass::color_functions::opacity::alpha::test \
 libsass::color_functions::rgb::rgba::a::test \
 libsass::units::conversion::size::test \
 libsass_closed_issues::issue_1332::test \
 libsass_closed_issues::issue_550::operator::test \
 non_conformant::basic::t22_colors_with_alpha::test \
 non_conformant::scss::composed_args::test \
 values::calculation::max::simplified::third \
 values::numbers::modulo::floats::larger::negative_positive \
 values::numbers::modulo::floats::larger::positive_negative \
 variablescope::test::color_simple_rgba
endif

# Fails on mips64el since 0.29.0: <https://github.com/kaj/rsass/issues/208>
ifneq (,$(filter $(DEB_HOST_ARCH),mips64el))
TEST_FLAKY += \
 core_functions::color::hsl::four_args::out_of_gamut::alpha::degenerate::nan \
 core_functions::color::hsl::four_args::out_of_gamut::saturation::degenerate::nan \
 core_functions::color::hwb::four_args::alpha::degenerate::nan \
 core_functions::color::rgb::four_args::clamped::alpha::degenerate::nan \
 core_functions::color::rgb::four_args::clamped::blue::degenerate::nan \
 core_functions::color::rgb::four_args::clamped::green::degenerate::nan \
 core_functions::color::rgb::four_args::clamped::red::degenerate::nan
endif

# resolve crate version
# * get topmost version except prerelease suffix
#   from Cargo.toml file in dir passed as argument
# * source package version if matching upstream part modulo prerelease
# * otherwise append source package version
crate_version = \
 $(shell perl -n \
 -E '/version\W+\K\d+\.\d+\.\d+/ ' \
 -E 'and say "$(DEB_VERSION_UPSTREAM)" =~ /^\Q$$&\E(?:~[a-z]+\d*)?$$/ ? "$(DEB_VERSION)" : "$$&+$(DEB_VERSION_UPSTREAM_REVISION)" and exit' \
 $1/Cargo.toml)

%:
	dh $@

%.html: %.md
	cmark-gfm $< > $@

%.txt: %.md
	cmark-gfm --to plaintext $< > $@

execute_after_dh_auto_build: $(DOCS) $(CHANGELOGS)

override_dh_auto_test:
	dh_auto_test --buildsystem rust -- --no-fail-fast -- $(addprefix --skip ,$(TEST_FLAKY))
	RSASS=$(wildcard target/*/*/rsass) prove --verbose debian/tests/*.t

execute_after_dh_auto_install: $(MANPAGES)

# avoid cleaning unless source is patched
override_dh_auto_clean:
	grep -q -- -PRE rsass*/Cargo.toml || dh_auto_clean --buildsystem rust

override_dh_installdocs:
	dh_installdocs --package rsass -- $(DOCS)
	dh_installdocs --remaining-packages --link-doc librust-rsass-dev -- $(DOCS)

override_dh_installchangelogs:
	dh_installchangelogs -- $(CHANGELOGS)

# declare version for virtually provided embedded crate
override_dh_gencontrol:
	 dh_gencontrol -plibrust-rsass-dev -- \
	 -V'rust:Version:librust-rsass-macros-dev=$(call crate_version,rsass-macros)'
	dh_gencontrol --remaining-packages

# build manpages
debian/rsass.1: debian/%.1: debian/rsass/usr/bin/%
	mkdir --parents $(dir $@)
	help2man --section 1 --no-info \
		--name "compiles CSS from SCSS files" \
		--output $@ $< \
		|| { $1 --help; false; }