#!/usr/bin/make -f

# Uncomment to view all compilation commands and fix W-compiler-flags-hidden
export VERBOSE=1

# Add hardening
export DEB_BUILD_MAINT_OPTIONS = hardening=+all

#CMake silently ignores CPPFLAGS. Below will properly set CFLAGS/CXXFLAGS
#https://wiki.debian.org/Hardening#Notes_for_packages_using_CMake
CPPFLAGS:=$(shell dpkg-buildflags --get CPPFLAGS)
CFLAGS:=$(shell dpkg-buildflags --get CFLAGS) $(CPPFLAGS) -fcommon
CXXFLAGS:=$(shell dpkg-buildflags --get CXXFLAGS) $(CPPFLAGS)
LDFLAGS:=$(shell dpkg-buildflags --get LDFLAGS)

include /usr/share/dpkg/architecture.mk
ifeq ($(origin CC),default)
	CC = $(DEB_HOST_GNU_TYPE)-gcc
endif

# Use this variable to allow options passed to cmake to be overridable
DEB_CMAKE_OPTIONS ?= -DCMAKE_VERBOSE_MAKEFILE=ON \
		-DLIB_SUFFIX="/$(DEB_HOST_MULTIARCH)" \
		-DEXAMPLES=OFF \
		..

BUILD_TREE=$(CURDIR)/build-tree

DLOPENED_RECOMMENDS_LIBS = -lpulse
ifeq ($(DEB_HOST_ARCH_OS),linux)
DLOPENED_RECOMMENDS_LIBS += -lasound
endif
DLOPENED_SUGGESTS_LIBS = -lportaudio -lsndio

.PHONY: build
# This looks redundant with the implicit rule for %, but it isn't: .PHONY
# is ignored for implicit rules, so we need a separate rule for build.
build:
	dh $@ --builddirectory=$(BUILD_TREE)
%:
	dh $@ --builddirectory=$(BUILD_TREE)

override_dh_auto_clean:
	rm -rf $(BUILD_TREE)

override_dh_auto_configure:
	dh_auto_configure -- $(DEB_CMAKE_OPTIONS)

override_dh_installchangelogs:
	dh_installchangelogs ChangeLog

copyright_check:
	${MAKE} -f /usr/share/cdbs/1/rules/utils.mk debian/stamp-copyright-check
	rm debian/stamp-copyright-check

override_dh_auto_install:
	dh_auto_install
	install -d debian/tmp/etc/openal
	install -m644 \
		debian/tmp/usr/share/openal/alsoftrc.sample \
		debian/tmp/etc/openal/alsoft.conf

override_dh_missing:
	dh_missing --list-missing

override_dh_shlibdeps: debian/tmp/openal-soft-Recommends-dummy.so debian/tmp/openal-soft-Suggests-dummy.so
	dh_shlibdeps -O--parallel
	# Need to manually add dependencies for dlopened libs.
	dpkg-shlibdeps -dRecommends -edebian/tmp/openal-soft-Recommends-dummy.so -xlibc6 -O >>debian/libopenal1.substvars
	dpkg-shlibdeps -dSuggests -edebian/tmp/openal-soft-Suggests-dummy.so -xlibc6 -O >>debian/libopenal1.substvars

debian/tmp/openal-soft-Recommends-dummy.so:
	mkdir -p debian/tmp
	$(CC) -xc -shared -Wl,--no-as-needed -o $@ /dev/null $(DLOPENED_RECOMMENDS_LIBS)

debian/tmp/openal-soft-Suggests-dummy.so:
	mkdir -p debian/tmp
	$(CC) -xc -shared -Wl,--no-as-needed -o $@ /dev/null $(DLOPENED_SUGGESTS_LIBS)