#!/usr/bin/make -f
# debian/rules for the Debian mesa package
# Copyright © 2006 Thierry Reding <thierry@gilfi.de>

# Uncomment this to turn on verbose mode.
#export DH_VERBOSE=1

include /usr/share/dpkg/pkg-info.mk

DEB_HOST_MULTIARCH ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
DEB_HOST_ARCH      ?= $(shell dpkg-architecture -qDEB_HOST_ARCH)
DEB_HOST_ARCH_OS   ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_OS)
DEB_HOST_ARCH_CPU  ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_CPU)

# for finding the correct llvm-config when meson doesn't know about it yet
LLVM_VERSION = 21
export PATH:=/usr/lib/llvm-$(LLVM_VERSION)/bin/:$(PATH)

export DEB_BUILD_MAINT_OPTIONS=optimize=-lto

DEB_CFLAGS_MAINT_APPEND := -Wall
DEB_CXXFLAGS_MAINT_APPEND := -Wall
ifneq (,$(filter $(DEB_HOST_ARCH), armhf))
  # Workaround for a variant of LP: #725126
  DEB_CFLAGS_MAINT_APPEND += -fno-optimize-sibling-calls
  DEB_CXXFLAGS_MAINT_APPEND += -fno-optimize-sibling-calls
else ifneq (,$(filter $(DEB_HOST_ARCH), loong64))
  # Workaround loong64 BFD linker crash related to TLSDESC
  DEB_CFLAGS_MAINT_APPEND += -mtls-dialect=trad
  DEB_CXXFLAGS_MAINT_APPEND += -mtls-dialect=trad
else ifneq (,$(filter $(DEB_HOST_ARCH), m68k))
  # This library has huge jump tables: Debian #1067207
  DEB_CFLAGS_MAINT_APPEND += -mlong-jump-table-offsets
  DEB_CXXFLAGS_MAINT_APPEND += -mlong-jump-table-offsets
else ifneq (,$(filter $(DEB_HOST_ARCH), sh4))
  # Workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83143
  DEB_CFLAGS_MAINT_APPEND += -freorder-blocks-algorithm=simple
  DEB_CXXFLAGS_MAINT_APPEND += -freorder-blocks-algorithm=simple
endif
buildflags = $(shell \
	DEB_CFLAGS_MAINT_APPEND='$(DEB_CFLAGS_MAINT_APPEND)' \
	DEB_CXXFLAGS_MAINT_APPEND='$(DEB_CXXFLAGS_MAINT_APPEND)' \
	dpkg-buildflags --export=configure)

EGL_PLATFORMS = x11
GALLIUM_DRIVERS = softpipe
VULKAN_DRIVERS =
VULKAN_LAYERS =

confflags_TEFLON = -Dteflon=false

LLVM_ARCHS     = amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x sparc64 x32
RUSTICL_ARCHS  = amd64 arm64 armel armhf i386 loong64 mips64el powerpc ppc64 ppc64el riscv64 s390x x32
NVK_ARCHS      = amd64 arm64 armhf i386 ppc64 riscv64 x32
VALGRIND_ARCHS = amd64 arm64 armhf i386 mips64el powerpc ppc64 ppc64el s390x

# hurd doesn't do direct rendering
ifeq ($(DEB_HOST_ARCH_OS), hurd)
  confflags_DIRECT_RENDERING = -Dglx-direct=false
  confflags_GBM = -Dgbm=disabled
else
  # Non-Linux ports lack epoll, so wayland isn't ready yet:
  # https://gitlab.freedesktop.org/wayland/wayland/-/issues/72
  # hurd also lacks *_CLOEXEC
  EGL_PLATFORMS += wayland

  GALLIUM_DRIVERS += nouveau r300 r600 virgl
  confflags_DIRECT_RENDERING = -Dglx-direct=true
  confflags_GBM = -Dgbm=enabled
  confflags_GALLIUM += -Dgallium-extra-hud=true
  confflags_GALLIUM += -Dlmsensors=enabled
  confflags_GALLIUM += -Dgallium-va=enabled
  confflags_GALLIUM += -Dvideo-codecs="all"


  # Freedreno requires arm in addition
  ifneq (,$(filter arm arm64,$(DEB_HOST_ARCH_CPU)))
	GALLIUM_DRIVERS += freedreno
  endif

  # Rocket and Teflon only support arm64
  ifneq (,$(filter $(DEB_HOST_ARCH), arm64))
	GALLIUM_DRIVERS += rocket
	confflags_TEFLON = -Dteflon=true
  endif

  # etnaviv, tegra, vc4 and v3d kernel support are only available on armhf and arm64
  ifneq (,$(filter $(DEB_HOST_ARCH), armhf arm64))
	GALLIUM_DRIVERS += etnaviv panfrost svga tegra vc4 v3d
	VULKAN_DRIVERS += broadcom freedreno panfrost
  endif

  ifneq (,$(filter $(DEB_HOST_ARCH), armhf arm64 loong64 riscv64))
	GALLIUM_DRIVERS += lima
  endif

  # Build intel drivers on archs where libdrm-intel is installed
  ifneq (,$(filter $(DEB_HOST_ARCH), amd64 i386 x32))
	GALLIUM_DRIVERS += crocus i915 svga
	VULKAN_DRIVERS += intel_hasvk
  endif

  ifneq (,$(filter $(DEB_HOST_ARCH), amd64 arm64 i386 loong64 x32 ppc64el riscv64))
	GALLIUM_DRIVERS += iris
	VULKAN_DRIVERS += intel
  endif

  ifneq (,$(filter $(DEB_HOST_ARCH), $(VALGRIND_ARCHS)))
	confflags_VALGRIND += -Dvalgrind=enabled
  endif

  # WSL supports only amd64 and arm64
  ifneq (,$(filter $(DEB_HOST_ARCH), amd64 arm64))
	GALLIUM_DRIVERS += d3d12
  endif

  # asahi supports only arm64, amd64 and i386
  ifneq (,$(filter $(DEB_HOST_ARCH), arm64 amd64 i386))
	GALLIUM_DRIVERS += asahi
	VULKAN_DRIVERS += asahi
  endif

  # LLVM is required for building r300g, radeonsi and llvmpipe drivers.
  # It's also required for building OpenCL support.
  ifneq (,$(filter $(DEB_HOST_ARCH), $(LLVM_ARCHS)))
	GALLIUM_DRIVERS += radeonsi zink llvmpipe

	# drop virtio from armel, it doesn't build
	ifneq (,$(filter $(DEB_HOST_ARCH), armel))
		VULKAN_DRIVERS += amd swrast
	else
		VULKAN_DRIVERS += amd swrast virtio
	endif

	VULKAN_LAYERS += anti-lag device-select intel-nullhw overlay screenshot
	confflags_GALLIUM += -Dllvm=enabled

	# Build rusticl for archs where rustc is available
	ifneq (,$(filter $(DEB_HOST_ARCH), $(RUSTICL_ARCHS)))
		confflags_GALLIUM += -Dgallium-rusticl=true
	endif

	ifneq (,$(filter $(DEB_HOST_ARCH), $(NVK_ARCHS)))
		export MESON_PACKAGE_CACHE_DIR=/usr/share/cargo/registry/
		VULKAN_DRIVERS += nouveau
	endif

	# gfxstream only builds on 64bit
	ifeq ($(DEB_HOST_ARCH_BITS),64)
		VULKAN_DRIVERS += gfxstream
	endif
  else
	confflags_GALLIUM += -Dllvm=disabled
  endif
endif

empty:=
space := $(empty) $(empty)
comma := ,
EGL_PLATFORMS := $(patsubst %,'%',$(EGL_PLATFORMS))
EGL_PLATFORMS_LIST := $(subst $(space),$(comma),$(EGL_PLATFORMS))
GALLIUM_DRIVERS := $(patsubst %,'%',$(GALLIUM_DRIVERS))
GALLIUM_DRIVERS_LIST := $(subst $(space),$(comma),$(GALLIUM_DRIVERS))
VULKAN_DRIVERS := $(patsubst %,'%',$(VULKAN_DRIVERS))
VULKAN_DRIVERS_LIST := $(subst $(space),$(comma),$(VULKAN_DRIVERS))
VULKAN_LAYERS := $(patsubst %,'%',$(VULKAN_LAYERS))
VULKAN_LAYERS_LIST := $(subst $(space),$(comma),$(VULKAN_LAYERS))

confflags_GLES = -Dgles1=disabled -Dgles2=enabled
confflags_GALLIUM += -Dgallium-drivers="[$(GALLIUM_DRIVERS_LIST)]"

confflags += \
	-Ddri-drivers-path=/usr/lib/$(DEB_HOST_MULTIARCH)/dri \
	-Dplatforms="[$(EGL_PLATFORMS_LIST)]" \
	-Dvulkan-drivers="[$(VULKAN_DRIVERS_LIST)]" \
	-Dvulkan-layers="[$(VULKAN_LAYERS_LIST)]" \
	-Dvulkan-manifest-per-architecture=false \
	-Dglvnd=enabled \
	-Db_ndebug=true \
	-Dbuild-tests=true \
	-Dtools=drm-shim \
	$(confflags_DIRECT_RENDERING) \
	$(confflags_GBM) \
	$(confflags_GALLIUM) \
	$(confflags_GLES) \
	$(confflags_VALGRIND) \
	$(confflags_TEFLON)


rewrite_wrap_files:
	debian/get-wraps-from-cargo-registry.py --cargo-registry /usr/share/cargo/registry

override_dh_clean: regen_control
	dpkg-parsechangelog | awk '/^Version:/ {print $$2}' | sed 's/-.*//;s/~/-/' > VERSION
	rm -rf build
	rm -rf configure bin/config.guess bin/config.sub config.h.in
	rm -rf $$(find -name Makefile.in)
	rm -rf bin/install-sh bin/ltmain.sh
	rm -rf src/intel/vulkan/grl/parser.out
	rm -rf src/intel/vulkan/grl/parsetab.py
	for file in debian/*.links.in; do rm -f $${file%%.in}; done
	find -name '*.pyc' -delete
	find -name '__pycache__' -delete
	if [ -f subprojects/rewrite ]; then \
		rm -rf subprojects; \
		mv subprojects-save subprojects; \
	fi
	dh_clean

override_dh_auto_configure: rewrite_wrap_files
	dpkg-parsechangelog | awk '/^Version:/ {print $$2}' > VERSION
	$(buildflags) dh_auto_configure -- \
		$(confflags)

override_dh_auto_install:
	dh_auto_install
	for file in debian/*.links.in; \
	do \
		sed -e"s,\$${DEB_HOST_MULTIARCH},$(DEB_HOST_MULTIARCH),g" \
			$${file} > $${file%%.in}; \
	done

# some tests are expected to fail for now, drop this when upstream has
# better cross-build testing in place and expected failures fixed
override_dh_auto_test:
	-dh_auto_test

allpkg = $(shell dh_listpackages -a)

override_dh_installchangelogs:
	dh_installchangelogs -a
	dh_installchangelogs -pmesa-common-dev

override_dh_install:
	# purge .la files
	find debian/tmp/ -name '*.la' -exec rm '{}' ';'

	# Get rid of some files which aren't installed. Do not
	# use -f to ensure we notice disappearing files:
	rm debian/tmp/usr/lib/*/libEGL_mesa.so
	rm debian/tmp/usr/lib/*/libGLX_mesa.so
	# use -f here though
	rm -f debian/tmp/usr/lib/*/libgrl.a

	# Copy the hardlinked *_dri.so correctly.
	install -m755 -d debian/libgl1-mesa-dri/usr/lib/${DEB_HOST_MULTIARCH}/dri/
	mv debian/tmp/usr/lib/${DEB_HOST_MULTIARCH}/dri/*_dri.so \
	   debian/libgl1-mesa-dri/usr/lib/${DEB_HOST_MULTIARCH}/dri/

  ifneq ($(DEB_HOST_ARCH_OS), hurd)
	# Copy the hardlinked va drivers correctly.
	install -m755 -d debian/mesa-libgallium/usr/lib/${DEB_HOST_MULTIARCH}/dri/
	mv debian/tmp/usr/lib/${DEB_HOST_MULTIARCH}/dri/*_drv_video.so \
	   debian/mesa-libgallium/usr/lib/${DEB_HOST_MULTIARCH}/dri/
  endif

	dh_install -a

	# Install bug control and script:
	set -e; for p in $(allpkg); do \
		install -d debian/$$p/usr/share/bug/$$p && \
		install -m 644 debian/local/control debian/$$p/usr/share/bug/$$p && \
		install -m 755 debian/local/script  debian/$$p/usr/share/bug/$$p; \
	done

override_dh_makeshlibs:
	dh_makeshlibs -a -- -c4

%:
	dh $@ \
		--builddirectory=build/ \
		--buildsystem=meson

# For maintainer use only, generate a tarball:
gentarball:
	tar --transform 's,^.\/,$(DEB_SOURCE)-$(DEB_VERSION_UPSTREAM)/,' \
		--exclude 'debian' --exclude '.git.*' --exclude-vcs \
		-cJf ../$(DEB_SOURCE)_$(DEB_VERSION_UPSTREAM).orig.tar.xz .

regen_control:
	sed -e"s,@LLVM_VERSION@,$(LLVM_VERSION),g" \
	    -e"s,@LLVM_ARCHS@,$(LLVM_ARCHS),g" \
	    -e"s,@RUSTICL_ARCHS@,$(RUSTICL_ARCHS),g" \
	    -e"s,@NVK_ARCHS@,$(NVK_ARCHS),g" \
	    -e"s,@VALGRIND_ARCHS@,$(VALGRIND_ARCHS),g" \
	    debian/control.in > debian/control