#!/usr/bin/make -f
# -*- makefile -*-
# Makefile to build the openttd debian package.

include /usr/share/dpkg/architecture.mk

# Use debhelper default for all targets (but some are overridden below).
%:
	dh $@ --buildsystem=cmake

# This prevents linking uselessly to libicudata and silences a warning
# in the build process.
export DEB_LDFLAGS_MAINT_APPEND=-Wl,-as-needed

# Enable all hardening options (since openttd offers a network-listening
# service that handles untrusted data).
export DEB_BUILD_MAINT_OPTIONS=hardening=+all

# Build release
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_BUILD_TYPE=RelWithDebInfo
# Explicitly mark dependencies as required or disabled, so an issue with
# build dependencies does not silently remove a feature or add a
# dependency
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_ZLIB=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_LibLZMA=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_LZO=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_PNG=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_Freetype=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_SDL2=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_Fontconfig=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_ICU=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_Grfcodec=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_Fluidsynth=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_REQUIRE_FIND_PACKAGE_OpenGL=TRUE
CMAKE_CONFIG_ARGUMENTS += -DCMAKE_DISABLE_FIND_PACKAGE_Allegro=TRUE

# When crosscompiling, prebuild tools that need to run on the build
# machine in a different build directory, and pass that build directory
# to the regular build so it can use those brebuilt ones.
ifneq ($(DEB_BUILD_ARCH),$(DEB_HOST_ARCH))
TOOLS_DIR=$(CURDIR)/build-native
CMAKE_CONFIG_ARGUMENTS += "-DHOST_BINARY_DIR=$(TOOLS_DIR)"
endif

# Pass custom options to configure. Since it's not autoconf but a custom
# script, some of the option names are slightly different. We also need
# to be explicit about the dependencies, in case we're not running in a
# clean build root.
override_dh_auto_configure:
ifneq ($(TOOLS_DIR),)
	dpkg-architecture -a"$(DEB_BUILD_ARCH)" -f -c dh_auto_configure -B"$(TOOLS_DIR)" -- -DOPTION_TOOLS_ONLY=ON
endif
	dh_auto_configure -- $(CMAKE_CONFIG_ARGUMENTS)

override_dh_auto_build:
ifneq ($(TOOLS_DIR),)
	dpkg-architecture -a"$(DEB_BUILD_ARCH)" -f -c dh_auto_build -B"$(TOOLS_DIR)"
endif
	dh_auto_build

execute_after_dh_install-arch:
	# Prevent installing duplicate license file
	rm debian/openttd/usr/share/doc/openttd/COPYING.md

GRF=media/baseset/openttd.grf
GRF_BACKUP=debian/openttd.grf

execute_before_dh_auto_build:
	# Remove the prebuilt grf file, to force a rebuild from source
	# (but do keep a backup, so the clean rule can restore it as
	# required by the policy).
	[ -f "$(GRF_BACKUP)" ] || mv "$(GRF)" "$(GRF_BACKUP)"

execute_after_dh_auto_clean:
	[ ! -f "$(GRF_BACKUP)" ] || mv "$(GRF_BACKUP)" "$(GRF)"