#!/usr/bin/make -f

ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
	NUMJOBS = $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
	MAKEFLAGS += -j$(NUMJOBS)
endif

DEB_HOST_ARCH ?= $(shell dpkg-architecture -qDEB_HOST_ARCH)

ifneq (,$(findstring amd64,$(DEB_HOST_ARCH)))
  LTO=y
endif
ifneq (,$(findstring x32,$(DEB_HOST_ARCH)))
  LTO=y
endif
ifneq (,$(findstring i386,$(DEB_HOST_ARCH)))
  LTO=y
endif
ifneq (,$(findstring arm64,$(DEB_HOST_ARCH)))
  LTO=y
endif

CFOPTIMIZE = $(shell dpkg-buildflags --get CXXFLAGS || echo -g -O2) \
             $(shell dpkg-buildflags --get LDFLAGS) \
             $(shell dpkg-buildflags --get CPPFLAGS)
ifneq ($(LTO),)
  ifeq ($(shell g++ -x c++ /dev/null -flto=jobserver -fwhole-program 2>&1 | grep 'unrecognized command line option'),)
    CFOPTIMIZE += -flto=jobserver -fwhole-program
  endif
  ifeq ($(shell g++ -x c++ /dev/null -fno-fat-lto-objects 2>&1 | grep 'unrecognized command line option'),)
    CFOPTIMIZE += -fno-fat-lto-objects
  endif
endif

ifeq (,$(filter terse%,$(DEB_BUILD_OPTIONS))$(filter quiet%,$(DEB_BUILD_OPTIONS)))
        VERBOSE=V=y
endif

tree-stamp:
	dh_testdir
	mkdir build-console
	cp -ldpR docs settings source CREDITS.txt build-console/
	mkdir build-tiles
	cp -ldpR docs settings source CREDITS.txt build-tiles/
	touch tree-stamp

DEB_HOST_GNU_TYPE   ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
DEB_BUILD_GNU_TYPE  ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
ifneq ($(DEB_BUILD_GNU_TYPE),$(DEB_HOST_GNU_TYPE))
	CROSS=CROSSHOST=$(DEB_HOST_GNU_TYPE)
endif

# The makefile is unorthodox, requiring all options to be specified on every invocation.
ARGS_CONSOLE = prefix=/usr CFOPTIMIZE="$(CFOPTIMIZE)" STRIP=: $(CROSS) $(VERBOSE)
ARGS_TILES   = $(ARGS_CONSOLE) TILES=y GAME=crawl-tiles \
	PROPORTIONAL_FONT=/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf \
	MONOSPACED_FONT=/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf

build-arch build-indep: build-stamp
build-stamp: tree-stamp
	dh_testdir

	cd build-console/source && $(MAKE) $(ARGS_CONSOLE)
	cd build-tiles/source && $(MAKE) $(ARGS_TILES)

	touch build-stamp

clean:
	dh_testdir
	dh_testroot

	rm -f build-stamp tree-stamp
	rm -rf build-console build-tiles

	git clean -dfX || true

	dh_clean

install: build
	dh_testdir
	dh_testroot
	dh_prep
	dh_installdirs

	cd build-console/source && $(MAKE) $(ARGS_CONSOLE) install install-xdg-data DESTDIR=../../debian/crawl-common
	rm -rf debian/crawl-common/usr/share/crawl/docs/license
	mkdir -p debian/crawl/usr/share
	mv debian/crawl-common/usr/games debian/crawl/usr/games
	mv debian/crawl-common/usr/share/applications debian/crawl/usr/share
	mv debian/crawl-common/usr/share/icons debian/crawl/usr/share
	mv debian/crawl-common/usr/share/metainfo debian/crawl/usr/share
	cd build-tiles/source && $(MAKE) $(ARGS_TILES) install install-xdg-data DESTDIR=../../debian/crawl-tiles
	rm -rf debian/crawl-tiles/var
	cd debian/crawl-tiles/usr/share/crawl/ && rm -rf docs settings
	mkdir -p debian/crawl-tiles-data/usr/share/crawl/dat
	mv debian/crawl-tiles/usr/share/crawl/dat/tiles debian/crawl-tiles-data/usr/share/crawl/dat/
	rm -rf debian/crawl-tiles/usr/share/crawl
	
	mkdir -p debian/crawl/usr/share/man/man6
	cp docs/crawl.6 debian/crawl/usr/share/man/man6/
	mkdir -p debian/crawl-tiles/usr/share/man/man6
	cp docs/crawl.6 debian/crawl-tiles/usr/share/man/man6/crawl-tiles.6
	mkdir -p debian/crawl-common/usr/share/doc/crawl-common/examples
	cp settings/init.txt debian/crawl-common/usr/share/doc/crawl-common/examples/crawlrc
	for i in docs/*.txt; do \
		ln -sf /usr/share/crawl/$$i debian/crawl-common/usr/share/doc/crawl-common/; \
	done

	mkdir -p debian/crawl/usr/share/doc
	ln -sf crawl-common debian/crawl/usr/share/doc/crawl
	mkdir -p debian/crawl-tiles/usr/share/doc
	ln -sf crawl-common debian/crawl-tiles/usr/share/doc/crawl-tiles
	mkdir -p debian/crawl-tiles-data/usr/share/doc
	ln -sf crawl-common debian/crawl-tiles-data/usr/share/doc/crawl-tiles-data

# Build architecture-independent files here.
binary-indep: install
	dh_testdir
	dh_testroot
	dh_installdocs -pcrawl-common -Xcrawl_manual.txt -Xaptitudes.txt -Xquickstart.txt -Xmacros_guide.txt -Xoptions_guide.txt -Xtiles_help.txt
	dh_installchangelogs -pcrawl-common docs/changelog.txt
	dh_link -i
	dh_compress -i -Xaptitudes.txt
	dh_fixperms -i
	dh_installdeb -i
	dh_gencontrol -i
	dh_md5sums -i
	dh_builddeb -i

# Build architecture-dependent files here.
binary-arch: install
	dh_testdir
	dh_testroot
	dh_link -a
	dh_compress -a -Xaptitudes.txt
	dh_strip -a
	dh_fixperms -a
	dh_installdeb -a
	dh_shlibdeps -a
	dh_gencontrol -a
	dh_md5sums -a
	dh_builddeb -a

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