#!/usr/bin/make -f

# polly & lldb aren't enabled for every platform
PROJECTS = clang;clang-tools-extra;lld;cross-project-tests;mlir
# openmp & libunwind aren't enabled for every platform

TARGET_BUILD	:= build-llvm
TARGET_BUILD_STAGE2    := $(TARGET_BUILD)/tools/clang/stage2-bins
DEB_INST		:= $(CURDIR)/debian/tmp/

GXX_VERSIONED_PACKAGE    := $(shell dpkg-query -W -f '$${Depends}' g++ | grep -o 'g++-[0-9][0-9.]*' | tail -n1 )
GXX_VERSIONED_EXECUTABLE := $(shell dpkg -L $(GXX_VERSIONED_PACKAGE) | grep '/usr/bin/g++-[0-9][0-9.]*' | xargs ls -d | tail -n1 )
GCC_VERSION              := $(subst /usr/bin/g++-,,$(GXX_VERSIONED_EXECUTABLE))

PKG_VERSION := $(shell dpkg-parsechangelog | awk '/^Version:/ {print $$2}')
LLVM_EPOCH := 1:
LLVM_VERSION   := $(shell echo $(PKG_VERSION) | sed -rne "s,^1:([0-9]+).*,\1,p")
LLVM_VERSION_FULL := $(shell echo $(PKG_VERSION) | sed -rne "s,^1:([0-9.]+)(~|-)(.*),\1,p")
LLVM_VERSION_MINOR := $(shell echo $(PKG_VERSION)  | sed -rne "s,^1:[0-9]+\.([0-9]+)\.[0-9]+.*,\1,p")
LLVM_VERSION_SNAPSHOT := $(shell echo $(PKG_VERSION) | sed -rne "s,^1:(.*),\1,p")
ifeq ($(LLVM_VERSION),$(LLVM_VERSION_FULL))
	LLVM_VERSION_FULL := $(LLVM_VERSION).0.0
	LLVM_VERSION_MINOR := 0
endif
LLVM_VERSION_NEXT := $(shell echo $(LLVM_VERSION_FULL) | awk -F. '{ OFS="."; $$NF+=1; print}')

# dpkg-buildflags support
# disable fixfilepath in favor of the llvm-project supplied flavor, disable lto
# remove +time64,+lfs once the time64_t transition starts
ifeq ($(DEB_HOST_ARCH),i386)
  RUNTIMES = compiler-rt;libcxx;libcxxabi
  export DEB_BUILD_MAINT_OPTIONS = reproducible=-fixfilepath,-fixdebugpath optimize=-lto
else
  ifeq ($(DEB_HOST_ARCH_BITS),32)
    RUNTIMES = libcxx;libcxxabi
    export DEB_BUILD_MAINT_OPTIONS = reproducible=-fixfilepath,-fixdebugpath optimize=-lto abi=+time64,+lfs
    skip_packages = -Nlibclang-rt-$(LLVM_VERSION)-dev
  else
    RUNTIMES = compiler-rt;libcxx;libcxxabi
    ifeq ($(DEB_HOST_ARCH),mips64el)
        export DEB_BUILD_MAINT_OPTIONS = reproducible=-fixfilepath,-fixdebugpath optimize=-lto hardening=-stackprotector,-stackprotectorstrong
    else
        export DEB_BUILD_MAINT_OPTIONS = reproducible=-fixfilepath,-fixdebugpath optimize=-lto
    endif
  endif
endif

SOURCE_NAME := $(shell dpkg-parsechangelog -S Source)
ifneq (,$(findstring snapshot,$(SOURCE_NAME)))
  BRANCH_NAME=snapshot
else
  BRANCH_NAME=$(LLVM_VERSION)
endif

VENDOR=$(shell lsb_release -is)
DISTRO=$(shell lsb_release -sc)
DERIVATIVE := $(shell if dpkg-vendor --derives-from Ubuntu; then echo Ubuntu; \
		elif dpkg-vendor --derives-from Debian; then echo Debian; \
		else echo Unknown; fi)

SONAME_EXT      := 1
SONAME_OPENMP	:= 5
# Manage the case when the version is 3.5~svn213052-1~exp1 or 3.4.2-1
DEBIAN_REVISION := $(shell dpkg-parsechangelog |  sed -rne "s,^Version: 1:([0-9.]+)(~|-)(.*),\3,p")
ifneq (,$(filter parallel=%,$(subst $(COMMA), ,$(DEB_BUILD_OPTIONS))))
	NCPUS := $(subst parallel=,,$(filter parallel=%,$(subst $(COMMA), ,$(DEB_BUILD_OPTIONS))))
else
	NCPUS := $(shell nproc)
endif

# this contains all packages to be built. Note that for at least the clean target,
# this always includes the binary-indep packages.
packages := $(shell dh_listpackages)

# no 32bit support
FLANG_ARCHS := amd64 arm64 ppc64el ppc64 sparc64 riscv64 loong64

# flang has some memory hogs, of up to 6.2gb per process. Limit the parallel jobs
# based on the available memory
ifneq (,$(filter $(DEB_HOST_ARCH), $(FLANG_ARCHS)))
  MEM_PER_CPU=6000
else
  MEM_PER_CPU=2100
endif

NJOBS := $(shell mt=`awk '/^(MemAvail|SwapFree)/ { mt += $$2 } END {print mt}' /proc/meminfo`; \
		awk -vn=$(NCPUS) -vmt=$$mt -vm=$(MEM_PER_CPU) \
		  'END { mt/=1024; n2 = int(mt/m); print n==1 || n2<=1 ? 1 : n2<=n ? n2 : n }' < /dev/null)

TIME_COMMAND = $(CURDIR)/debian/usage-wrapper.py $(SUMMARY_ONLY) -j $(NJOBS) --base-memory -m 4.0 -o usage-$(notdir $@)-$(DEB_HOST_ARCH).svg
TIME_BIN := $(if $(wildcard /usr/bin/time),/usr/bin/time,/bin/time)
TIME_COMMAND = $(TIME_BIN) -v
USAGE_BUILD_DEP = $(EMPTY) time,
ifneq (,$(findstring usage-wrapper, $(TIME_COMMAND)))
  ifeq ($(DERIVATIVE),Ubuntu)
    USAGE_BUILD_DEP = $(EMPTY) python3:any, python3-psutil, python3-matplotlib [!i386],
    ifeq ($(DEB_HOST_ARCH),i386)
      SUMMARY_ONLY = --summary-only
    endif
  else
    USAGE_BUILD_DEP = $(EMPTY) python3:any, python3-psutil [!hurd-i386 !hurd-amd64], python3-matplotlib [!m68k !sh4 !x32 !hurd-i386 !hurd-amd64],
    ifneq (,$(filter $(DEB_HOST_ARCH), hurd-i386 hurd-amd64))
      TIME_COMMAND = $(TIME_BIN) -v
    endif
    ifneq (,$(filter $(DEB_HOST_ARCH), m68k sh4 x32))
      SUMMARY_ONLY = --summary-only
    endif
  endif
endif

DH_VERSION := $(shell dpkg -s debhelper | grep '^Version' | awk '{print $$2}')

include /usr/share/dpkg/architecture.mk

MULTILIB_ARCHS := amd64 i386 mips64 mips64el mipsel powerpc ppc64 s390x sparc sparc64 x32
ifeq ($(DERIVATIVE),Ubuntu)
  ifeq (,$(filter $(DISTRO), bionic focal jammy noble))
    MULTILIB_ARCHS := $(filter-out s390x, $(MULTILIB_ARCHS))
  endif
endif

CONFIGURE_EXTRA =

# these are handled on a per stage / build basis
ifeq ($(VENDOR)-$(DEB_HOST_ARCH),Ubuntu-ppc64el)
  export DEB_CFLAGS_MAINT_STRIP = -g -O3
  export DEB_CXXFLAGS_MAINT_STRIP = -g -O3
else
  export DEB_CFLAGS_MAINT_STRIP = -g -O2
  export DEB_CXXFLAGS_MAINT_STRIP = -g -O2
endif
include /usr/share/dpkg/buildflags.mk

# We use a stage2 build. It means that a first clang is built using gcc,
# a second clang is built with the first
# And the various components are built using the second clang.
# See https://llvm.org/docs/AdvancedBuilds.html

# collect additional flags for all stages all builds
CFLAGS_EXTRA = -Wno-unused-command-line-argument
CXXFLAGS_EXTRA = -Wno-unused-command-line-argument
LDFLAGS_EXTRA = -Wl,--build-id

# collect all flags for stage 1 toolchain build only
STAGE_1_CFLAGS = $(CFLAGS) $(CFLAGS_EXTRA) $(CPPFLAGS)
STAGE_1_CXXFLAGS = $(CXXFLAGS) $(CXXFLAGS_EXTRA) $(CPPFLAGS)
STAGE_1_LDFLAGS = $(LDFLAGS) $(LDFLAGS_EXTRA)
# If we build with libc++, we might want to set different arguments for
# stage 1 & runtimes
RUNTIMES_CFLAGS = $(STAGE_1_CFLAGS)
RUNTIMES_CXXFLAGS := $(STAGE_1_CXXFLAGS)
RUNTIMES_LDFLAGS := $(STAGE_1_LDFLAGS)

# collect all flags for stage 2 toolchain and stand-alone builds
STAGE_2_CFLAGS = $(CFLAGS) $(CFLAGS_EXTRA) $(CPPFLAGS)
STAGE_2_CXXFLAGS = $(CXXFLAGS) $(CXXFLAGS_EXTRA) $(CPPFLAGS)
STAGE_2_LDFLAGS = $(LDFLAGS) $(LDFLAGS_EXTRA)

# collect additional cmake options for toolchain build configuration
STAGE_1_CMAKE_EXTRA =
STAGE_2_CMAKE_EXTRA =
STAGE_ALL_CMAKE_EXTRA =
# toolchain config-only var combining all stage 1 cmake options
CMAKE_EXTRA = $(STAGE_1_CMAKE_EXTRA) $(STAGE_ALL_CMAKE_EXTRA)
# toolchain config-only var prepending BOOTSTRAP_ to all stage 2 cmake options
BOOTSTRAP_CMAKE_EXTRA = $(foreach extra,$(STAGE_2_CMAKE_EXTRA) $(STAGE_ALL_CMAKE_EXTRA), $(subst -D,-DBOOTSTRAP_,$(extra)))

BASE_PATH := $(CURDIR)
STAGE_1_BIN_DIR := $(BASE_PATH)/$(TARGET_BUILD)/bin
STAGE_1_LIB_DIR := $(BASE_PATH)/$(TARGET_BUILD)/lib
STAGE_2_BIN_DIR := $(BASE_PATH)/$(TARGET_BUILD_STAGE2)/bin
STAGE_2_LIB_DIR := $(BASE_PATH)/$(TARGET_BUILD_STAGE2)/lib

# toggleable defaults
COMPILER_RT_USE_BUILTINS_LIBRARY := ON
LIBCXX_EXCEPTIONS := ON
LIBCXX_USE_COMPILER_RT := ON

# We want to set the clang extra version ONLY in stage 2
# because we want the clang stage 1 to be as reproducible as possible
# when building with sccache (because this tool do a hash using the
# compiler binary and other things)
STAGE_2_CMAKE_EXTRA += -DCLANG_REPOSITORY_STRING=$(DEBIAN_REVISION)

ifneq (,$(filter $(DEB_HOST_ARCH),sparc sparc64))
STAGE_1_CMAKE_EXTRA += -DLLVM_PARALLEL_LINK_JOBS=4
endif

ifneq (,$(filter $(DEB_HOST_ARCH),i386 hurd-i386 armel mipsel mips64el powerpc riscv64))
# For some reason, in the stage2 build, when clang is used to compile
# itself. The atomic detection is failing on armel and riscv64. Forcing the inclusion
# everywhere and in all stages
LDFLAGS_EXTRA += -latomic
endif

Z3_FLAG = -DLLVM_ENABLE_Z3_SOLVER=OFF
# no ocaml support in main for Ubuntu
ifneq ($(DERIVATIVE),Ubuntu)
  ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' libz3-dev) gt 4.7.0; echo $$?),0)
    ifeq (,$(filter $(DEB_HOST_ARCH),sh4))
      Z3_FLAG = -DLLVM_ENABLE_Z3_SOLVER=ON
    endif
  endif
endif
STAGE_2_CMAKE_EXTRA += $(Z3_FLAG)
ifneq (,$(findstring =ON, $(Z3_FLAG)))
  Z3_DEV_DEP = libz3-dev [!sh4],
endif

# Change the default CPU for s390x
ZARCH=z196
ifeq ($(DERIVATIVE),Ubuntu)
ZARCH=z13
endif
STAGE_2_CMAKE_EXTRA += -DCLANG_SYSTEMZ_DEFAULT_ARCH=$(ZARCH)

# clangd remote index support requires GRPC & protobuf.
# Enable if minimum tested versions are available.
CLANGD_GRPC_INSTALLED=no
ifeq (,$(filter stage1, $(DEB_BUILD_PROFILES)))
ifeq ($(shell v=$$(dpkg-query -W -f '$${Version}' libgrpc++-dev 2>/dev/null); if [ -z "$$v" ]; then echo 1; else dpkg --compare-versions $$v gt 1.30.0; echo $$?; fi),0)
ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' protobuf-compiler-grpc) gt 1.30.0; echo $$?),0)
ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' libprotobuf-dev) gt 3.12.0; echo $$?),0)
ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' protobuf-compiler) gt 3.12.0; echo $$?),0)
CLANGD_GRPC_INSTALLED=yes
STAGE_2_CMAKE_EXTRA += -DCLANGD_ENABLE_REMOTE=ON
endif
endif
endif
endif
endif

export CC=gcc-$(GCC_VERSION)
export CXX=g++-$(GCC_VERSION)

ifneq (,$(findstring $(DEB_HOST_ARCH),armel))
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=arm-linux-gnueabi
# align arch profile with debian baseline
# https://wiki.debian.org/ArmEabiPort
  CFLAGS_EXTRA += -march=armv5t
  CXXFLAGS_EXTRA += -march=armv5t
# disable compiler-rt builtins (not supported for baseline armel arch: armv5t)
# See http://lists.llvm.org/pipermail/llvm-dev/2016-May/099761.html
  STAGE_ALL_CMAKE_EXTRA += -DCOMPILER_RT_BUILD_BUILTINS=OFF
  COMPILER_RT_USE_BUILTINS_LIBRARY := OFF
  LIBCXX_USE_COMPILER_RT := OFF
# disable scudo standalone (not supported for baseline armel arch: armv5t)
  STAGE_ALL_CMAKE_EXTRA += -DCOMPILER_RT_BUILD_SCUDO_STANDALONE=OFF
endif

ifneq (,$(findstring $(DEB_HOST_ARCH),armhf))
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=arm-linux-gnueabihf
# align arch profile with debian baseline
# https://wiki.debian.org/ArmHardFloatPort#Minimum_CPU_.26_FPU
  CFLAGS_EXTRA += -march=armv7-a -mfpu=vfpv3-d16
  CXXFLAGS_EXTRA += -march=armv7-a -mfpu=vfpv3-d16
endif

ifneq (,$(filter $(DEB_HOST_ARCH),i386))
# Sometimes, i386 needs help with the triple
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=i386-linux-gnu
  CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=i386-linux-gnu
endif

ifneq (,$(filter $(DEB_HOST_ARCH),mips64el))
# avoid an issue with search path on mips64el
# https://bugs.llvm.org/show_bug.cgi?id=41204
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=mips64el-linux-gnuabi64
  CFLAGS_EXTRA += -mxgot
  CXXFLAGS_EXTRA += -mxgot
  LDFLAGS_EXTRA += -mxgot
endif

ifneq (,$(filter $(DEB_HOST_ARCH),powerpc))
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=powerpc-linux-gnu
endif

# debug symbols OOM in Ubuntu Ubuntu and slows down build process.
ifneq (,$(filter $(DEB_HOST_ARCH),riscv64))
  opt_flags = -O2 -DNDEBUG -g0
else
  opt_flags = -O2 -DNDEBUG -g1
endif

ifneq (,$(filter $(DEB_HOST_ARCH),sparc))
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=sparc-linux-gnu
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_PARALLEL_LINK_JOBS=4
endif

ifneq (,$(filter $(DEB_HOST_ARCH),sparc64))
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=sparc64-linux-gnu
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_PARALLEL_LINK_JOBS=4
endif

ifneq (,$(filter $(DEB_HOST_ARCH),s390x))
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=s390x-linux-gnu
  LIBCXX_EXCEPTIONS := OFF
# disable compiler-rt builtins (not supported for s390x)
  STAGE_ALL_CMAKE_EXTRA += -DCOMPILER_RT_BUILD_BUILTINS=OFF
  COMPILER_RT_USE_BUILTINS_LIBRARY := OFF
  LIBCXX_USE_COMPILER_RT := OFF
endif

ifneq (,$(filter $(DEB_HOST_ARCH),mips64el))
  STAGE_ALL_CMAKE_EXTRA += -DCOMPILER_RT_BUILD_BUILTINS=OFF
  COMPILER_RT_USE_BUILTINS_LIBRARY := OFF
  LIBCXX_USE_COMPILER_RT := OFF
endif

ifneq (,$(filter $(DEB_HOST_ARCH),x32))
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_HOST_TRIPLE=x86_64-linux-gnux32
  STAGE_ALL_CMAKE_EXTRA += -DLLVM_DEFAULT_TARGET_TRIPLE=x86_64-linux-gnux32
  STAGE_ALL_CMAKE_EXTRA += -DCOMPILER_RT_BUILD_BUILTINS=OFF
  COMPILER_RT_USE_BUILTINS_LIBRARY := OFF
  LIBCXX_USE_COMPILER_RT := OFF
endif

ifneq (,$(filter $(DEB_HOST_ARCH),hurd-i386))
endif

ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' g++-$(GCC_VERSION)) ge 4.8-20121128-1~ ; echo $$?),0)
	control_vars = '-Vdep:devlibs=libstdc++-$(GCC_VERSION)-dev, libgcc-$(GCC_VERSION)-dev' \
		'-Vdep:devlibs-objc=libobjc-$(GCC_VERSION)-dev'
else ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' g++-$(GCC_VERSION)) ge 4.7.2-10~ ; echo $$?),0)
	control_vars = '-Vdep:devlibs=libstdc++6-$(GCC_VERSION)-dev, libgcc-$(GCC_VERSION)-dev' \
		'-Vdep:devlibs-objc=libobjc-$(GCC_VERSION)-dev'
else
	control_vars = '-Vdep:devlibs=libstdc++6-$(GCC_VERSION)-dev'
endif

ifneq (,$(filter stage1, $(DEB_BUILD_PROFILES)))
	LLVM_SPIRV_INSTALLED = no
else
LLVM_SPIRV_VERSION := $(LLVM_VERSION)
LLVM_SPIRV := $(shell bash -c "command -v llvm-spirv-$(LLVM_SPIRV_VERSION)" 2>/dev/null)
ifndef LLVM_SPIRV
	LLVM_SPIRV_VERSION := $(shell expr $(LLVM_VERSION) - 1)
	LLVM_SPIRV := $(shell bash -c "command -v llvm-spirv-$(LLVM_SPIRV_VERSION)" 2>/dev/null)
endif

# Disable spirv support for most of the distro versions
# It needs llvm-spirv-17 and it is rarely available
# Be prescritive
SPIRV_DISABLE_DISTRO := bionic buster lunar jammy focal buster bullseye bookworm
ifndef LLVM_SPIRV
	LLVM_SPIRV_INSTALLED = no
else
	ifeq (,$(filter-out $(SPIRV_DISABLE_DISTRO), $(DISTRO)))
# Too old llvm-spirv version are failing. See #52200
		LLVM_SPIRV_INSTALLED = no
	else
		LLVM_SPIRV_INSTALLED = yes
	endif
endif
endif

LIBCLC_TARGETS_TO_BUILD=amdgcn--;amdgcn--amdhsa;amdgcn-mesa-mesa3d;r600--;nvptx--;nvptx64--;nvptx--nvidiacl;nvptx64--nvidiacl
LIBCLC_LLVM_SPIRV =
ifeq ($(LLVM_SPIRV_INSTALLED),yes)
	LIBCLC_TARGETS_TO_BUILD := $(LIBCLC_TARGETS_TO_BUILD);spirv-mesa3d-;spirv64-mesa3d-
	LIBCLC_LLVM_SPIRV = -DLLVM_SPIRV=$(LLVM_SPIRV)
endif

BINUTILS_GOLD_ARCHS := amd64 arm64 armhf i386 ppc64 ppc64el x32 s390x hurd-i386 hurd-amd64
ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' binutils) ge 2.23.1-1~exp3 ; echo $$?),0)
ifneq (,$(filter $(DEB_HOST_ARCH),$(BINUTILS_GOLD_ARCHS)))
	STAGE_ALL_CMAKE_EXTRA += -DLLVM_USE_LINKER=gold
	STAGE_ALL_CMAKE_EXTRA += -DLLVM_BINUTILS_INCDIR=/usr/include/
endif
endif

ifneq (,$(filter bolt-$(LLVM_VERSION), $(packages)))
    PROJECTS += ;bolt
endif

ifneq (,$(filter libllvmlibc-$(LLVM_VERSION)-dev, $(packages)))
	LLVM_LIBC_ENABLE=yes
	LLVM_LIBC_DISABLE_DISTRO := bionic
	ifeq (,$(filter $(DISTRO), $(LLVM_LIBC_DISABLE_DISTRO)))
		RUNTIMES += ;libc
	else
		LLVM_LIBC_ENABLE=no
	endif
endif

ifneq ($(LLVM_LIBC_ENABLE),no)
    $(info LLVM libc disabled for $(DISTRO))
endif

ifneq (,$(filter $(DEB_HOST_ARCH), $(FLANG_ARCHS)))
    PROJECTS += ;flang
endif

CODECOVERAGE=no
ifneq (,$(filter codecoverage,$(DEB_BUILD_OPTIONS)))
# enable the code coverage
	CODECOVERAGE=yes
# for -fvisibility-inlines-hidden see http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130729/183016.html
	CXXFLAGS_EXTRA += -fprofile-arcs -ftest-coverage
	LDFLAGS_EXTRA += -coverage -lgcov
	RUN_TEST=yes
    # OpenMP doesn't respect LDFLAGS
    STAGE_2_CMAKE_EXTRA+= -DLIBOMP_LDFLAGS="-coverage -lgcov" # don't pass LDFLAGS_EXTRA because it expects gcc arg
endif

# Enable polly (or not)
POLLY_ENABLE=yes
ifneq (,$(filter $(DEB_HOST_ARCH), powerpc))
  POLLY_ENABLE=no
else
  PROJECTS+=;polly
endif

# Enable libunwind (or not)
LIBUNWIND_ENABLE=yes
ifneq (,$(filter $(DEB_HOST_ARCH), s390x armel m68k mipsel mips64el hurd-i386 hurd-amd64 powerpc sparc sparc64 x32))
  LIBUNWIND_ENABLE=no
# do not use compiler-rt builtins for libcxx (libcxxabi) when libunwind is
# disabled since the gnu implementation in libgcc_s will then be required
  LIBCXX_USE_COMPILER_RT := OFF
# See https://github.com/llvm/llvm-project/issues/77846
  STAGE_ALL_CMAKE_EXTRA += -DLIBCXXABI_USE_LLVM_UNWINDER=OFF
else
  RUNTIMES += ;libunwind
  STAGE_ALL_CMAKE_EXTRA += -DLIBCXXABI_USE_LLVM_UNWINDER=ON
endif

# Enable openmp (or not)
OMP_ARCHS = amd64 arm64 armhf loong64 ppc64 ppc64el hurd-amd64
OPENMP_ENABLE=yes
ifeq (,$(filter $(DEB_HOST_ARCH), $(OMP_ARCHS)))
  OPENMP_ENABLE=no
else
  RUNTIMES += ;openmp;offload
  STAGE_ALL_CMAKE_EXTRA += -DLIBOMP_LIBFLAGS="-lm"
ifeq ($(LIBUNWIND_ENABLE),yes)
  STAGE_ALL_CMAKE_EXTRA += -DOPENMP_USE_LLVM_UNWINDER=ON
endif
endif

# Do not install objects
STAGE_ALL_CMAKE_EXTRA += -DMLIR_INSTALL_AGGREGATE_OBJECTS=OFF


RUN_TEST=yes
ifneq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	RUN_TEST=no
endif
ifeq ($(DERIVATIVE),Ubuntu)
ifeq (riscv64,$(DEB_HOST_ARCH))
	RUN_TEST=no
endif
endif

# llvm tests timeout, disable it on mipsel and x32
ifneq (,$(filter $(DEB_HOST_ARCH), mipsel mips64el x32))
	RUN_TEST=no
endif

SCAN_BUILD=no
ifneq (,$(filter scan-build,$(DEB_BUILD_OPTIONS)))
# enable the build using scan-build
# The package are installed through the variable declarations:
# OTHERMIRROR="deb http://llvm.org/apt/unstable/ llvm-toolchain main"
# EXTRAPACKAGES="clang-X"
	SCAN_BUILD=yes

	PRE_PROCESS=scan-build-$(LLVM_VERSION) --show-description -analyzer-config stable-report-filename=true
	PRE_PROCESS_CONF=scan-build-$(LLVM_VERSION)
# no need to run tests in this case
	RUN_TEST=no
	CONFIGURE_EXTRA += --enable-assertions
	STAGE_ALL_CMAKE_EXTRA += -DLLVM_ENABLE_ASSERTIONS=ON
endif

ifneq (,$(filter coverity,$(DEB_BUILD_OPTIONS)))
# enable the build using coverity
# pbuilder contains BINDMOUNTS="/opt/cov-analysis/"
# And we have some pbuilder hooks to configure and pack the result
# Where the binaries are installed on the jenkins instance
        PRE_PROCESS=PATH=$$PATH:/opt/cov-analysis/bin/ cov-build --dir cov-int
# We don't want to check the temporary files produced by the configure
        PRE_PROCESS_CONF=
        COVERITY_ENABLE=1
        CONFIGURE_EXTRA += --enable-assertions
        STAGE_ALL_CMAKE_EXTRA += -DLLVM_ENABLE_ASSERTIONS=ON
# no need to run tests in this case
        RUN_TEST=no
else
        COVERITY_ENABLE=0
endif

LLDB_ENABLE=no
# hurd has threading issues
LLDB_ARCHS := amd64 arm64 armel armhf i386 loong64 m68k ppc64el riscv64 s390x x32
ifneq (,$(filter $(DEB_HOST_ARCH),$(LLDB_ARCHS)))
	STAGE_ALL_CMAKE_EXTRA += -DLLDB_ENABLE_LUA=OFF
	PROJECTS+=;lldb
endif

ifneq (,$(filter $(DEB_HOST_ARCH),i386 amd64))
	INTEL_PT_DISABLE_DISTRO := bionic
# Disable intel-pt on old distro, fails on bionic (too old)
	ifeq (,$(filter $(DISTRO), $(INTEL_PT_DISABLE_DISTRO)))
		STAGE_ALL_CMAKE_EXTRA += -DLLDB_BUILD_INTEL_PT=ON -DLIBIPT_INCLUDE_PATH=/usr/include -DLIBIPT_LIBRARY_PATH=/usr/lib/$(DEB_HOST_MULTIARCH)
    endif
endif

LLDB_PYTHON_DISABLE_DISTRO := bionic buster
LLDB_PYTHON_ENABLE=yes
# Disable zstd on old distro, fails on lld
ifeq (,$(filter-out $(LLDB_PYTHON_DISABLE_DISTRO), $(DISTRO)))
# Don't enable lld python for old distros
  STAGE_ALL_CMAKE_EXTRA += -DLLDB_ENABLE_PYTHON=OFF
  LLDB_PYTHON_ENABLE=no
  $(info LLBD Python disabled for $(DISTRO))
endif

LIBCXX_WASM_ENABLE=yes
LIBCXX_WASM_DISABLE_DISTRO := bionic buster focal bullseye jammy
# Either wasi-libc doesn't exist / too old
# or we have this bug
# https://sourceware.org/bugzilla/show_bug.cgi?id=27558
ifeq (,$(filter-out $(LIBCXX_WASM_DISABLE_DISTRO), $(DISTRO)))
  LIBCXX_WASM_ENABLE=no
  $(info libcxx wasm disabled for $(DISTRO))
endif

DOC_GENERATION=yes
DOC_GENERATION_DISTRO := buster bullseye bionic focal
# LLVM upstream moved to myst_parser but it isn't available on old distro
ifeq (,$(filter-out $(DOC_GENERATION_DISTRO), $(DISTRO)))
  DOC_GENERATION=no
  $(info Doc generation disabled for $(DISTRO))
endif

ifneq (,$(filter $(DEB_HOST_ARCH),powerpc))
  LIBCXX_WASM_ENABLE=no
endif

LLD_ENABLE=yes

ifneq (,$(filter $(DEB_HOST_ARCH_OS),linux))
# only for linux
	STAGE_2_CMAKE_EXTRA += -DLLVM_USE_PERF=ON -DLLVM_ENABLE_LIBPFM=ON
endif

LLVM_ENABLE_ZSTD_DISABLE_DISTRO := bionic buster
# Disable zstd on old distro, fails on lld
ifeq (,$(filter-out $(LLVM_ENABLE_ZSTD_DISABLE_DISTRO), $(DISTRO)))
       STAGE_ALL_CMAKE_EXTRA += -DLLVM_ENABLE_ZSTD=OFF
endif

LTO_ENABLE=no
# Only enable it for archs supporting gold
ifneq (,$(filter $(DEB_HOST_ARCH),$(BINUTILS_GOLD_ARCHS)))
# LTO requires a bunch of memory. Don't do it everywhere
LTO_DISABLE_ARCHS := i386 armhf s390x ppc64 x32
ifeq (,$(filter-out $(LTO_DISABLE_ARCHS), $(DEB_HOST_ARCH)))
	LTO_ENABLE=no
else
# Disable for now because of
# https://github.com/llvm/llvm-project/issues/58317#issuecomment-1276190743
#	LTO_ENABLE=yes
#	STAGE_2_CMAKE_EXTRA += -DLLVM_ENABLE_LTO="On"
endif
endif

ifneq ($(LTO_ENABLE),no)
    $(info LTO disabled for $(DEB_HOST_ARCH))
endif

# https://bugs.launchpad.net/bugs/2016471
ifeq (,$(filter-out $(LTO_DISABLE_ARCHS), $(DEB_HOST_ARCH)))
LD_GOLD_SUPPORTS_NO_SYMBOLIC := $(shell ld.gold --help | grep -q -w '-Bno-symbolic' && echo "yes" || echo "no")
ifeq ($(LD_GOLD_SUPPORTS_NO_SYMBOLIC),yes)
    STAGE_2_CMAKE_EXTRA += -DLIBOMP_LDFLAGS=-Wl,-Bno-symbolic
endif
endif

DH_OPTIONS=
OCAML_ENABLE= no
OCAML_ARCHS := amd64 arm64 ppc64el riscv64 s390x
ifneq (,$(filter $(DEB_HOST_ARCH),$(OCAML_ARCHS)))
# Enable OCAML for this arch.
	OCAML_ENABLE=yes
	OCAML_STDLIB_DIR    ?= $(shell ocamlc -where)
	DH_OPTIONS=--with ocaml
endif

LIBFUZZER_ENABLE=yes
ifeq (,$(filter $(DEB_HOST_ARCH_OS),linux))
	LIBFUZZER_ENABLE=no
        $(info Libfuzzer disabled for $(DEB_HOST_ARCH_OS))
endif

ifneq (,$(filter $(DEB_HOST_ARCH), mipsel))
	LIBOMP_ARCH = mips
endif

ifneq (,$(filter $(DEB_HOST_ARCH), mips64 mips64el))
	LIBOMP_ARCH = mips64
endif

# if cmake is installed in /tmp/cmake/ uses it
# Used to build llvm on old ubuntu (precise) on the llvm.org/apt/ ci
CMAKE_BIN=cmake
ifeq ($(shell test -e /tmp/cmake/bin/cmake && echo -n yes),yes)
	CMAKE_BIN=/tmp/cmake/bin/cmake
	export LD_LIBRARY_PATH=$$LD_LIBRARY_PATH:/tmp/cmake/bin/
endif

SCCACHE_ENABLE=no
SCCACHE_CMAKE =
# if sccache is installed in the chroot, use it
ifeq ($(shell test -e /opt/sccache/sccache && echo -n yes),yes)
	ifneq (,$(filter $(DEB_HOST_ARCH),i386 amd64 s390x))
		STAGE_1_CMAKE_EXTRA += $(SCCACHE_CMAKE)
		SCCACHE_ENABLE=yes
		SCCACHE_PATH=/opt/sccache/
		SCCACHE_CMD=$(SCCACHE_PATH)/sccache
		SCCACHE_CMAKE = -DCMAKE_C_COMPILER_LAUNCHER=$(SCCACHE_CMD) -DCMAKE_CXX_COMPILER_LAUNCHER=$(SCCACHE_CMD)
		export LD_LIBRARY_PATH=$$LD_LIBRARY_PATH:/opt/sccache
	endif
endif

COVERITY_ENABLE=0
ifneq (,$(filter coverity,$(DEB_BUILD_OPTIONS)))
# enable the build using coverity
# pbuilder contains BINDMOUNTS="/opt/cov-analysis/"
# And we have some pbuilder hooks to configure and pack the result
# Where the binaries are installed on the jenkins instance
        PRE_PROCESS=PATH=$$PATH:/opt/cov-analysis/bin/ cov-build --dir cov-int
# We don't want to check the temporary files produced by the configure
        PRE_PROCESS_CONF=
        COVERITY_ENABLE=1
        CONFIGURE_EXTRA += --enable-assertions
        STAGE_ALL_CMAKE_EXTRA += -DLLVM_ENABLE_ASSERTIONS=ON
		SCCACHE_ENABLE=no
		SCCACHE_CMAKE=
# no need to run tests in this case
        RUN_TEST=no
endif

# enables cmake build targets like stage2-[target_name]
ENABLED_STAGE2_CMAKE_BUILD_TARGETS = check-all;check-llvm;check-clang;check-clang-tools;check-lld;check-libcxx;check-libcxxabi;check-mlir;check-libc;check-sanitizer;llvm-config;test-suite

%:
	dh $@ $(DH_OPTIONS)

# For some reasons, some spaces are added, removing them
PROJECTS_LIST := $(shell echo "$(PROJECTS)"|sed -e "s| ||g")
RUNTIMES_LIST := $(shell echo "$(RUNTIMES)"|sed -e "s| ||g")

stamps/preconfigure:
	if ! grep -qs '/proc ' /proc/mounts; then \
		echo "/proc needs to be mounted"; \
		exit 1; \
	fi

	if test "$(DISTRO)" = "bookworm" -a "$(LLVM_SPIRV_INSTALLED)" = "no"; then \
		echo "llvm spriv isn't detected while it should probably for this distro"; \
	fi

	@echo "Memory:"
	@if [ -e /proc/meminfo ]; then \
		cat /proc/meminfo | grep -E '(Mem|Swap)Free|Cached'; \
	else \
		echo "  No memory info available"; \
	fi
	@echo "Processors: $$(cat /proc/cpuinfo | grep --count '^processor')"
	@echo "Used Processors: $(NJOBS) (out of $(NCPUS)), $(MEM_PER_CPU)kb/processor"

	@echo "DEB_BUILD_OPTIONS=$(DEB_BUILD_OPTIONS)"
	@echo "DEB_HOST_MULTIARCH=$(DEB_HOST_MULTIARCH)"
	@echo "DEB_HOST_GNU_TYPE=$(DEB_HOST_GNU_TYPE)"
	@echo "DEB_HOST_ARCH_BITS=$(DEB_HOST_ARCH_BITS)"
	@echo "DEB_HOST_ARCH=$(DEB_HOST_ARCH)"
	@echo "DEB_HOST_ARCH_OS=$(DEB_HOST_ARCH_OS)"
	@echo "DEB_BUILD_MAINT_OPTIONS=$(DEB_BUILD_MAINT_OPTIONS)"
	@echo "DISTRO=$(DISTRO)"
	@echo "GCC_VERSION=$(GCC_VERSION)"
	@echo "PROJECTS=$(PROJECTS_LIST)"
	@echo "RUNTIMES=$(RUNTIMES_LIST)"
	@echo "LLVM_VERSION=$(LLVM_VERSION)"
	@echo "LLVM_VERSION_MINOR=$(LLVM_VERSION_MINOR)"
	@echo "LLVM_VERSION_FULL=$(LLVM_VERSION_FULL)"
	@echo "LLVM_VERSION_SNAPSHOT=$(LLVM_VERSION_SNAPSHOT)"
	@echo "PATH=$(PATH)"
	@echo "LD_LIBRARY_PATH=$$LD_LIBRARY_PATH"
	@echo "RUNTIMES_CXXFLAGS=$(RUNTIMES_CXXFLAGS)"
	@echo "STAGE_1_CXXFLAGS=$(STAGE_1_CXXFLAGS)"
	@echo "STAGE_2_CFLAGS=$(STAGE_2_CFLAGS)"
	@echo "LIBFUZZER_ENABLE=$(LIBFUZZER_ENABLE)"
	@echo "LTO_ENABLE=$(LTO_ENABLE)"
	@echo "COMPILER_RT_WASM_ENABLE=$(COMPILER_RT_WASM_ENABLE)"
	@echo "LIBCXX_WASM_ENABLE=$(LIBCXX_WASM_ENABLE)"
	@echo "SCCACHE_ENABLE=$(SCCACHE_ENABLE)"
	@echo "LLVM_SPIRV=$(LLVM_SPIRV)"
	@echo "LLVM_SPIRV_INSTALLED=$(LLVM_SPIRV_INSTALLED)"
	@echo "DOC_GENERATION=$(DOC_GENERATION)"

	for f in debian/*.in debian/tests/*.in; do \
		f2=$$(echo $$f | sed 's/\.in$$//;s/X\.Y/$(LLVM_VERSION)/'); \
		echo "$$f => $$f2"; \
		sed -e 's|@DEB_HOST_MULTIARCH@|$(DEB_HOST_MULTIARCH)|g' \
			-e "s|@USAGE_BUILD_DEP@|$(USAGE_BUILD_DEP)|g" \
			-e "s|@Z3_DEV_DEP@|$(Z3_DEV_DEP)|g" \
			-e "s|@MULTILIB_ARCHS@|$(MULTILIB_ARCHS)|g" \
			-e "s|@LLDB_ARCHS@|$(LLDB_ARCHS)|g" \
			-e "s|@OCAML_ARCHS@|$(OCAML_ARCHS)|g" \
			-e "s|@OMP_ARCHS@|$(OMP_ARCHS)|g" \
			-e "s|@FLANG_ARCHS@|$(FLANG_ARCHS)|g" \
			-e "s|@BRANCH_NAME@|$(BRANCH_NAME)|g" \
			-e "s|@OCAML_STDLIB_DIR@|$(OCAML_STDLIB_DIR)|g" \
			-e "s|@LLVM_EPOCH@|$(LLVM_EPOCH)|g" \
			-e "s|@LLVM_VERSION_FULL@|$(LLVM_VERSION_FULL)|g" \
			-e "s|@LLVM_VERSION_MINOR@|$(LLVM_VERSION_MINOR)|g" \
			-e "s|@LLVM_VERSION_NEXT@|$(LLVM_VERSION_NEXT)|g" \
			-e "s|@LLVM_VERSION@|$(LLVM_VERSION)|g" $$f > $$f2; \
		[ -x $$f ] && chmod +x $$f2; \
	done

	# Make install file executable for dh-exec
	chmod +x \
		debian/clang-tools-$(LLVM_VERSION).install \
		debian/libclang-$(LLVM_VERSION)-dev.install \
		debian/libclang-common-$(LLVM_VERSION)-dev.install \
		debian/libclang-rt-$(LLVM_VERSION)-dev.install \
		debian/libpolly-$(LLVM_VERSION)-dev.install \
		debian/libomp-$(LLVM_VERSION)-dev.install \
		debian/libomp5-$(LLVM_VERSION).install \
		debian/llvm-$(LLVM_VERSION)-dev.install \
		debian/llvm-$(LLVM_VERSION)-linker-tools.install \
		debian/llvm-$(LLVM_VERSION)-linker-tools.links \
		debian/libbolt-$(LLVM_VERSION)-dev.install

	# workaround the breaks/replaces/conflicts introduced with the libc++ move
	# we update the version to make it work with apt.llvm.org
	# Yeah, this is ugly but I don't know how to do better
	if test "$(LLVM_VERSION)" = "19"; then \
		if echo $(LLVM_VERSION_SNAPSHOT)| grep -q "~++"; then \
		sed -i -e "s|(<< 1:19.1.0~++rc3-1~exp2)|(<< 1:19.1.0~++20240910033111)|g" debian/control; \
		sed -i -e "s|(<< 1:19.1.0~++rc4-5)|(<< 1:19.1.0~++20240917071600)|g" debian/control; \
		sed -i -e "s|(<< 1:19.1.0-4)|(<< 1:19.1.0~++20240917071600)|g" debian/control; \
		fi; \
	fi

	# llvm-spirv was found, so we can enable *.spv files. Debian
	# buster and Ubuntu 18.04 don't have llvm-spirv to create the
	# *.spv files.
	if test "$(LLVM_SPIRV_INSTALLED)" = "yes"; then \
		sed -i -e "s|#spv\ ||g" debian/libclc-$(LLVM_VERSION).install; \
	fi

	# disable libc++-X.Y-dev-wasm32.install.in on old distro
	if test "$(LIBCXX_WASM_ENABLE)" = "no"; then \
		echo "" > debian/libc++-$(LLVM_VERSION)-dev-wasm32.install; \
		echo "" > debian/libc++abi-$(LLVM_VERSION)-dev-wasm32.install; \
	else \
		if ! dpkg -l|grep -q wasi-libc; then \
			echo "Could not find wasi-libc on the system"; \
			echo "Please check that the package is available on the system"; \
			echo "it might be that the 'hello' package is installed by another constraint"; \
			exit 1; \
		fi; \
	fi

	if test "$(LLVM_LIBC_ENABLE)" = "no"; then \
		echo "" > debian/libllvmlibc-$(LLVM_VERSION)-dev.install; \
	fi

	# Conditionally enable install clangd grpc files
	if test "$(CLANGD_GRPC_INSTALLED)" = "yes"; then \
		sed -i -e "s|#grpc\ ||g" debian/libclang-$(LLVM_VERSION)-dev.install; \
	fi

	if ! dh_listpackages|grep -q clang-$(LLVM_VERSION); then \
		echo "Could not find clang-$(LLVM_VERSION) in the list of packages"; \
		echo "Refresh debian/control ?"; \
		echo "Package list:"; \
		dh_listpackages; \
		exit 1; \
	fi
	@mkdir -p stamps
	touch $@

# Override this two targets. They are trying to manage the .in conversion for me
override_dh_ocamlinit:
override_dh_ocamlclean:

override_dh_auto_configure: stamps/configure
stamps/configure: stamps/preconfigure
ifeq (${SCCACHE_ENABLE},yes)
	ls -al $(SCCACHE_PATH)*
endif
	echo "Using gcc: "
	$(CC) -v
	$(CXX) -v
	mkdir -p $(TARGET_BUILD)
# remove in case of artifact
	rm -rf build

	if test "$(SCAN_BUILD)" = "yes"; then \
		patch -f -p1 < debian/patches/on-the-fly/use-scan-build-runtimes.diff||true; \
	fi

	# Configure coverity (we need the compilers) + work around perf issues
	-(if test $(COVERITY_ENABLE) -eq 1; then \
		export PATH=$$PATH:/opt/cov-analysis/bin/; \
		cov-configure --compiler clang --comptype clang; \
		cov-configure --compiler gcc-$(GCC_VERSION) --comptype gcc; \
		cov-configure --compiler g++-$(GCC_VERSION) --comptype gcc; \
		cov-configure -co /usr/bin/g++-$(GCC_VERSION) --comptype gcc -- -fPIC -std=c++11; \
		cov-configure -co /usr/bin/gcc-$(GCC_VERSION) --comptype gcc -- -fPIC; \
		cov-configure -co /usr/bin/g++-$(GCC_VERSION) --comptype gcc -- -fPIC -std=c++11 -fno-exceptions; \
		cov-configure -co /usr/bin/g++-$(GCC_VERSION) --comptype gcc --template \
			--xml-option append_arg:"--ppp_translator" \
			--xml-option append_arg:"replace/llvm::AlignOf<PrevTy>::Alignment/(llvm::AlignOf<PrevTy>::Alignment)" \
			--xml-option append_arg:"--ppp_translator" \
			--xml-option append_arg:"replace/llvm::AlignOf<NextTy>::Alignment/(llvm::AlignOf<NextTy>::Alignment)"; \
		cov-configure --compiler c++ --comptype g++ --template \
			--xml-option append_arg:"--ppp_translator" \
			--xml-option append_arg:"replace/llvm::AlignOf<PrevTy>::Alignment/(llvm::AlignOf<PrevTy>::Alignment)" \
			--xml-option append_arg:"--ppp_translator" \
			--xml-option append_arg:"replace/llvm::AlignOf<NextTy>::Alignment/(llvm::AlignOf<NextTy>::Alignment)"; \
	fi)

# Fails with No target "unwind_static"
#    -DLIBCXXABI_ENABLE_STATIC_UNWINDER=ON \
#    -DLIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY=OFF \
#    -DLIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY=ON \
#-    to libc++ when libunwind is built
#-    Matches what is done on brew:
#-    https://bit.ly/3kDNpC9
ifeq (${SCCACHE_ENABLE},yes)
# Just in case...
	$(SCCACHE_CMD) --stop-server||true
ifneq (,$(filter $(DEB_HOST_ARCH),i386 amd64))
# Start the sccache server with the right set of options to use GCP
	SCCACHE_LOG=sccache=debug SCCACHE_ERROR_LOG=$(SCCACHE_PATH)/sccache.log SCCACHE_GCS_KEY_PATH=$(SCCACHE_PATH)/secret-gcp-storage.json SCCACHE_GCS_BUCKET=apt-llvm-org-sccache SCCACHE_GCS_RW_MODE=READ_WRITE $(SCCACHE_CMD) --start-server
else
# on s390x machine, use a local cache
	SCCACHE_CACHE_SIZE=20G SCCACHE_LOG=sccache=debug SCCACHE_ERROR_LOG=$(SCCACHE_PATH)/sccache.log SCCACHE_DIR=/opt/sccache/cache/ SCCACHE_DIRECT=true $(SCCACHE_CMD) --start-server
endif
endif
	echo "Running tests: $(RUN_TEST)"
	echo "Using cmake: $(CMAKE_BIN)"; \
	LD_LIBRARY_PATH=$$LD_LIBRARY_PATH \
	$(PRE_PROCESS_CONF) $(CMAKE_BIN) -S llvm/ -B $(TARGET_BUILD) \
	-G Ninja \
	-DCMAKE_INSTALL_PREFIX=/usr/lib/llvm-$(LLVM_VERSION) \
	-DLLVM_VERSION_SUFFIX= \
	-DCMAKE_SUPPRESS_REGENERATION=ON \
	-DCMAKE_BUILD_TYPE=Release \
	-DCMAKE_C_FLAGS="$(STAGE_1_CFLAGS)" \
	-DCMAKE_CXX_FLAGS="$(STAGE_1_CXXFLAGS)" \
	-DCMAKE_SHARED_LINKER_FLAGS="$(STAGE_1_LDFLAGS)" \
	-DCMAKE_MODULE_LINKER_FLAGS="$(STAGE_1_LDFLAGS)" \
	-DCMAKE_EXE_LINKER_FLAGS="$(STAGE_1_LDFLAGS)" \
	-DPACKAGE_VENDOR=$(VENDOR) \
	-DENABLE_LINKER_BUILD_ID=ON \
	-DLLVM_TARGETS_TO_BUILD=Native \
	-DLLVM_ENABLE_PROJECTS="$(PROJECTS_LIST)" \
	-DLLVM_ENABLE_RUNTIMES="$(RUNTIMES_LIST)" \
	-DLLVM_ENABLE_PIC=ON \
	-DLLVM_ENABLE_RTTI=ON \
	-DLLVM_BUILD_DOCS=OFF \
	-DLLVM_INCLUDE_GO_TESTS=OFF \
	-DLLVM_USE_RELATIVE_PATHS_IN_FILES=ON \
	-DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON \
	-DLLVM_ENABLE_CURL=$(if $(filter stage1, $(DEB_BUILD_PROFILES)),OFF,ON) \
	-DLLVM_USE_RELATIVE_PATHS_IN_DEBUG_INFO=ON \
	-DCLANG_PLUGIN_SUPPORT=OFF \
	-DCLANG_BUILD_EXAMPLES=OFF \
	-DCLANG_DEFAULT_LINKER=ld \
	-DCLANG_DEFAULT_RTLIB=libgcc \
	-DCOMPILER_RT_BUILD_XRAY=OFF \
	-DCOMPILER_RT_INCLUDE_TESTS=OFF \
	-DCOMPILER_RT_USE_LIBCXX=OFF \
	-DCOMPILER_RT_USE_BUILTINS_LIBRARY=$(COMPILER_RT_USE_BUILTINS_LIBRARY) \
	-DLIBUNWIND_INSTALL_LIBRARY=OFF \
	-DLIBCXXABI_ENABLE_EXCEPTIONS=$(LIBCXX_EXCEPTIONS) \
	-DLIBCXXABI_USE_COMPILER_RT=$(LIBCXX_USE_COMPILER_RT) \
	-DLIBCXXABI_INSTALL_LIBRARY=OFF \
	-DLIBCXX_ENABLE_EXCEPTIONS=$(LIBCXX_EXCEPTIONS) \
	-DLIBCXX_USE_COMPILER_RT=$(LIBCXX_USE_COMPILER_RT) \
	-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON \
	-DLIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY=ON \
	-DLIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY=OFF \
	-DLIBCXX_INSTALL_LIBRARY=OFF \
	-DLIBCXX_INSTALL_MODULES=ON \
	-DLLVM_LIBC_GPU_BUILD=ON \
	-DBOOTSTRAP_LIBCXX_INSTALL_MODULES=ON \
	-DOPENMP_ENABLE_LIBOMP_PROFILING=OFF \
	-DOPENMP_ENABLE_LIBOMPTARGET_PROFILING=OFF \
	-DLIBOMP_ENABLE_RTTI=OFF \
	-DLIBOMP_OMPT_SUPPORT=OFF \
	-DCLANG_FORCE_MATCHING_LIBCLANG_SOVERSION=ON \
	-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF \
	$(CMAKE_EXTRA) \
	-DBUILTINS_CMAKE_ARGS="-DCMAKE_C_FLAGS=$(STAGE_1_CFLAGS);-DCMAKE_CXX_FLAGS=$(STAGE_1_CXXFLAGS);-DCMAKE_EXE_LINKER_FLAGS=$(STAGE_1_LDFLAGS);-DCMAKE_SHARED_LINKER_FLAGS=$(STAGE_1_LDFLAGS);-DCMAKE_MODULE_LINKER_FLAGS=$(STAGE_1_LDFLAGS);-DCMAKE_BUILD_TYPE=Release;-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF" \
	-DRUNTIMES_CMAKE_ARGS="-DCMAKE_C_FLAGS=$(STAGE_1_CFLAGS);-DCMAKE_CXX_FLAGS=$(STAGE_1_CXXFLAGS);-DCMAKE_EXE_LINKER_FLAGS=$(STAGE_1_LDFLAGS);-DCMAKE_SHARED_LINKER_FLAGS=$(STAGE_1_LDFLAGS);-DCMAKE_MODULE_LINKER_FLAGS=$(STAGE_1_LDFLAGS);-DCMAKE_BUILD_TYPE=Release;-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF" \
	-DCLANG_ENABLE_BOOTSTRAP=ON \
	-DCLANG_BOOTSTRAP_TARGETS="$(ENABLED_STAGE2_CMAKE_BUILD_TARGETS)" \
	-DCLANG_BOOTSTRAP_PASSTHROUGH="CMAKE_INSTALL_PREFIX;CMAKE_SUPPRESS_REGENERATION;ENABLE_LINKER_BUILD_ID;LLVM_ENABLE_PIC;LLVM_ENABLE_RTTI;LLVM_INCLUDE_GO_TESTS;LLVM_USE_RELATIVE_PATHS_IN_FILES;CLANG_DEFAULT_LINKER;CLANG_DEFAULT_CXX_STDLIB;CLANG_DEFAULT_RTLIB;COMPILER_RT_USE_LIBCXX;COMPILER_RT_USE_BUILTINS_LIBRARY;COMPILER_RT_DEFAULT_TARGET_ONLY;COMPILER_RT_INCLUDE_TESTS;LIBUNWIND_USE_COMPILER_RT;LIBCXXABI_ENABLE_EXCEPTIONS;LIBCXXABI_USE_COMPILER_RT;LIBCXX_USE_COMPILER_RT;LIBCXX_ENABLE_EXCEPTIONS;LIBCXX_ENABLE_STATIC_ABI_LIBRARY;LIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY;LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY;LIBOMP_ENABLE_RTTI;LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN;CLANG_FORCE_MATCHING_LIBCLANG_SOVERSION;CMAKE_C_COMPILER_LAUNCHER;CMAKE_CXX_COMPILER_LAUNCHER;LLVM_LIBC_GPU_BUILD" \
	-DBOOTSTRAP_CMAKE_BUILD_TYPE=RelWithDebInfo \
	-DBOOTSTRAP_CMAKE_C_FLAGS_RELWITHDEBINFO="$(opt_flags)" \
	-DBOOTSTRAP_CMAKE_CXX_FLAGS_RELWITHDEBINFO="$(opt_flags)" \
	-DBOOTSTRAP_CMAKE_C_FLAGS="$(STAGE_2_CFLAGS)" \
	-DBOOTSTRAP_CMAKE_CXX_FLAGS="$(STAGE_2_CXXFLAGS)" \
	-DBOOTSTRAP_CMAKE_SHARED_LINKER_FLAGS="$(STAGE_2_LDFLAGS)" \
	-DBOOTSTRAP_CMAKE_MODULE_LINKER_FLAGS="$(STAGE_2_LDFLAGS)" \
	-DBOOTSTRAP_CMAKE_EXE_LINKER_FLAGS="$(STAGE_2_LDFLAGS)" \
	-DBOOTSTRAP_LLVM_ENABLE_FFI=ON \
	-DBOOTSTRAP_LLVM_ENABLE_DUMP=ON \
	-DBOOTSTRAP_LLVM_ENABLE_LIBPFM=ON \
	-DBOOTSTRAP_LLVM_ENABLE_SPHINX=ON \
	-DBOOTSTRAP_CLANG_DEFAULT_PIE_ON_LINUX=ON \
	-DBOOTSTRAP_SPHINX_WARNINGS_AS_ERRORS=OFF \
	-DBOOTSTRAP_LLVM_USE_RELATIVE_PATHS_IN_FILES=ON \
	-DBOOTSTRAP_LLVM_INSTALL_UTILS=ON \
	-DBOOTSTRAP_LLVM_VERSION_SUFFIX= \
	-DBOOTSTRAP_LLVM_POLLY_LINK_INTO_TOOLS=ON \
	-DBOOTSTRAP_LLVM_EXPERIMENTAL_TARGETS_TO_BUILD="M68k;Xtensa" \
	-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="M68k;Xtensa" \
	-DBOOTSTRAP_LLVM_LINK_LLVM_DYLIB=ON \
	-DBOOTSTRAP_LLVM_ENABLE_CURL=$(if $(filter stage1, $(DEB_BUILD_PROFILES)),OFF,ON) \
	-DBOOTSTRAP_CLANG_LINK_CLANG_DYLIB=ON \
	-DBOOTSTRAP_LIBCLANG_LIBRARY_VERSION=$(SONAME_EXT) \
	-DBOOTSTRAP_LIBCXX_INSTALL_EXPERIMENTAL_LIBRARY=ON \
	-DBOOTSTRAP_PYTHON_EXECUTABLE=/usr/bin/python3 \
	$(BOOTSTRAP_CMAKE_EXTRA) \
	-DBOOTSTRAP_BUILTINS_CMAKE_ARGS="-DCMAKE_C_FLAGS=$(STAGE_2_CFLAGS);-DCMAKE_CXX_FLAGS=$(STAGE_2_CXXFLAGS);-DCMAKE_EXE_LINKER_FLAGS=$(STAGE_2_LDFLAGS);-DCMAKE_SHARED_LINKER_FLAGS=$(STAGE_2_LDFLAGS);-DCMAKE_MODULE_LINKER_FLAGS=$(STAGE_2_LDFLAGS);-DCMAKE_BUILD_TYPE=RelWithDebInfo;-DCMAKE_C_FLAGS_RELWITHDEBINFO=$(opt_flags);-DCMAKE_CXX_FLAGS_RELWITHDEBINFO=$(opt_flags);-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF" \
	-DBOOTSTRAP_RUNTIMES_CMAKE_ARGS="-DCMAKE_C_FLAGS=$(STAGE_2_CFLAGS);-DCMAKE_CXX_FLAGS=$(RUNTIMES_CXXFLAGS);-DCMAKE_EXE_LINKER_FLAGS=$(STAGE_2_LDFLAGS) -L$(STAGE_1_LIB_DIR);-DCMAKE_SHARED_LINKER_FLAGS=$(STAGE_2_LDFLAGS) -L$(STAGE_1_LIB_DIR);-DCMAKE_MODULE_LINKER_FLAGS=$(STAGE_2_LDFLAGS) -L$(STAGE_1_LIB_DIR);-DCMAKE_BUILD_TYPE=RelWithDebInfo;-DCMAKE_C_FLAGS_RELWITHDEBINFO=$(opt_flags);-DCMAKE_CXX_FLAGS_RELWITHDEBINFO=$(opt_flags);-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF"

	FOUND_VERSION=`grep LLVM_VERSION_STRING build-llvm/include/llvm/Config/llvm-config.h|cut -d\" -f2`; \
	if ! echo "$(LLVM_VERSION_FULL)"|grep "$$FOUND_VERSION"; then \
		echo "mismatch of version. Found: $$FOUND_VERSION / Expected: $(LLVM_VERSION_FULL)"; \
		exit 1; \
	fi
	@mkdir -p stamps
	touch $@

VERBOSE=-v

stamps/debian-full-build:
	echo "Using cmake: $(CMAKE_BIN)"
# linker hack so stage2 can link against stage1 libs at runtime
	LD_LIBRARY_PATH=$(STAGE_1_LIB_DIR):$$LD_LIBRARY_PATH \
	VERBOSE=1 $(TIME_COMMAND) $(PRE_PROCESS) $(CMAKE_BIN) --build $(TARGET_BUILD) -j $(NJOBS) --target stage2 || cat build-llvm/tools/clang/stage2-bins/CMakeFiles/CMakeOutput.log

# Check the stage 2 build worked
	if ! readelf --string-dump .comment  $(TARGET_BUILD_STAGE2)/bin/clang 2>&1|grep -q "clang version"; then \
		echo "clang hasn't been built using clang. Bye bye. Check that the stage2 build has been done."; \
		if test "$(SCAN_BUILD)" = "no"; then \
			exit 2; \
		fi; \
	fi
	if ldd $(TARGET_BUILD_STAGE2)/lib/libclang-$(LLVM_VERSION).so.1|grep -q libclang-cpp-$(LLVM_VERSION); then \
		echo "libclang-$(LLVM_VERSION).so.1 depends on libclang-cpp. Should not be the case"; \
		exit 2; \
	fi
	if test -e $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/libclang-$(LLVM_VERSION).so.1; then \
		echo "libclang-$(LLVM_VERSION).so.1 link is broken"; \
		exit 2; \
	fi
	touch $@

stamps/debian-libfuzzer-build:
ifeq (${LIBFUZZER_ENABLE},yes)
	cd $(TARGET_BUILD); \
	CFLAGS="$(opt_flags) $(STAGE_2_CFLAGS)"; \
	echo $$CFLAGS; \
	for sourcefile in $(BASE_PATH)/compiler-rt/lib/fuzzer/*.cpp; do \
		$(SCCACHE_CMD) $(STAGE_2_BIN_DIR)/clang++ -c $$CFLAGS -std=c++17 $$sourcefile -IFuzzer || exit 1; \
	done; \
	ar ruv libFuzzer.a Fuzzer*.o
endif
	touch $@

stamps/debian-libclc-build:
# workaround missing files on i386
	cd $(TARGET_BUILD_STAGE2) && ninja opt llvm-link llvm-as
# Builds libclc
	mkdir -p libclc/build
	echo "Using cmake: $(CMAKE_BIN)"
	cd libclc/build && \
	$(CMAKE_BIN) ../ \
	-G Ninja \
	$(SCCACHE_CMAKE) \
	-DCMAKE_C_COMPILER=$(STAGE_2_BIN_DIR)/clang \
	-DCMAKE_CXX_COMPILER=$(STAGE_2_BIN_DIR)/clang++ \
	-DCMAKE_C_FLAGS="$(opt_flags) $(STAGE_2_CFLAGS)" \
	-DCMAKE_CXX_FLAGS="$(opt_flags) $(STAGE_2_CXXFLAGS) -I$(BASE_PATH)/llvm/include" \
	-DCMAKE_SHARED_LINKER_FLAGS="$(STAGE_2_LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
	-DCMAKE_MODULE_LINKER_FLAGS="$(STAGE_2_LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
	-DCMAKE_EXE_LINKER_FLAGS="$(STAGE_2_LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
	-DCMAKE_INSTALL_PREFIX=/usr \
	-DCMAKE_INSTALL_DATADIR=lib \
	-DCMAKE_INSTALL_INCLUDEDIR=include \
	-DLLVM_CMAKE_DIR=$(STAGE_2_BIN_DIR)/../ \
	$(LIBCLC_LLVM_SPIRV) \
	-DLIBCLC_TARGETS_TO_BUILD="$(LIBCLC_TARGETS_TO_BUILD)"; \
	LD_LIBRARY_PATH=$$LD_LIBRARY_PATH:$(STAGE_2_LIB_DIR) $(TIME_COMMAND) ninja -j $(NJOBS) $(VERBOSE)
ifndef LLVM_SPIRV
	echo "libclc built without SPIRV (.spv) outputs because llvm-spirv wasn't found"
endif
	touch $@

# Remove some new flags introduced by dpkg 1.22.0;
STAGE_2_WASM_CFLAGS := $(filter-out -march=% -mfpu=% -fcf-protection% -mbranch-protection%, $(STAGE_2_CFLAGS))
STAGE_2_WASM_CXXFLAGS := $(filter-out -march=% -mfpu=% -fcf-protection% -mbranch-protection%, $(STAGE_2_CXXFLAGS))

build-wasm/compiler-rt-%: cpu = $(@:build-wasm/compiler-rt-%=%)
build-wasm/compiler-rt-%:
	@echo "Building compiler-rt for $(cpu)"
	@echo "Using cmake: $(CMAKE_BIN)"
	mkdir -p "$@"
	$(CMAKE_BIN) -B "$@" -S compiler-rt/lib/builtins/ \
		-G Ninja \
		$(SCCACHE_CMAKE) \
		-DCMAKE_SYSTEM_NAME=Generic \
		-DCMAKE_C_COMPILER_TARGET=$(cpu)-unknown-unknown \
		-DCMAKE_CXX_COMPILER_TARGET=$(cpu)-unknown-unknown \
		-DCMAKE_ASM_COMPILER_TARGET=$(cpu)-unknown-unknown \
		-DCMAKE_C_COMPILER=$(STAGE_2_BIN_DIR)/clang \
		-DCMAKE_CXX_COMPILER=$(STAGE_2_BIN_DIR)/clang++ \
		-DCMAKE_C_FLAGS="$(opt_flags) $(STAGE_2_WASM_CFLAGS)" \
		-DCMAKE_CXX_FLAGS="$(opt_flags) $(STAGE_2_WASM_CXXFLAGS)" \
		-DCMAKE_SHARED_LINKER_FLAGS="$(STAGE_2_LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
		-DCMAKE_MODULE_LINKER_FLAGS="$(STAGE_2_LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
		-DCMAKE_EXE_LINKER_FLAGS="$(STAGE_2_LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
		-DCMAKE_INSTALL_PREFIX=/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION) \
		-DCMAKE_INSTALL_DATADIR=lib \
		-DCMAKE_INSTALL_INCLUDEDIR=include \
		-DLLVM_CMAKE_DIR=$(STAGE_2_BIN_DIR)/../ \
		-DCOMPILER_RT_STANDALONE_BUILD=ON \
		-DCOMPILER_RT_BAREMETAL_BUILD=ON \
		-DCOMPILER_RT_INCLUDE_TESTS=OFF \
		-DCOMPILER_RT_USE_LIBCXX=OFF \
		-DCOMPILER_RT_USE_BUILTINS_LIBRARY=ON \
		-DCOMPILER_RT_DEFAULT_TARGET_TRIPLE=$(cpu)-unknown-unknown \
		-DCOMPILER_RT_OS_DIR=wasi
	$(TIME_COMMAND) ninja -C "$@" -j $(NJOBS) $(VERBOSE)

ifeq ($(LIBCXX_WASM_ENABLE), no)
build-wasm/libcxx-%-wasi: build-wasm/compiler-rt-%
	@echo "Skipping libcxx-*-wasi on this distro $(DISTRO)"
else
build-wasm/libcxx-%-wasi: cpu = $(@:build-wasm/libcxx-%-wasi=%)
build-wasm/libcxx-%-wasi: build-wasm/compiler-rt-%
	@echo "Building libcxx for $(cpu)"
	@echo "Using cmake: $(CMAKE_BIN)"

	# We need a functioning clang, which in turn requires a linker. We
	# patch clang to use a versioned wasm-ld (cf. wasm-ld-path.diff), so
	# create wasm-ld-$(LLVM_VERSION) in the stage2 bin dir manually.
	cp $(STAGE_2_BIN_DIR)/wasm-ld $(STAGE_2_BIN_DIR)/wasm-ld-$(LLVM_VERSION)

	# We need a wasm compiler-rt. Depend on the make target that builds it,
	# and manually copy it to the stage2 lib dir from there
	mkdir -p \
	   $(STAGE_2_LIB_DIR)/clang/$(LLVM_VERSION)/lib/wasi/
	cp build-wasm/compiler-rt-$(cpu)/lib/wasi/libclang_rt.builtins-$(cpu).a \
	   $(STAGE_2_LIB_DIR)/clang/$(LLVM_VERSION)/lib/wasi/

	# Notes:
	# - Uses $(LDFLAGS) instead of $(STAGE_2_LDFLAGS), because wasm-ld does not
	#   support --build-id yet. Upstream is working on it, cf. D107662.
	# - Pass -fno-stack-protector to disable -fstack-protector-strong that is
	#   passed by default, as this is not supported yet in WebAssembly, cf.
	#   https://github.com/WebAssembly/wasi-libc/issues/157
	# - Use llvm-ar and llvm-ranlib, as binutils does not currently support
	#   WebAssembly and creates invalid indexes.
	# - Use LLVM_LIBDIR_SUFFIX to install to /usr/lib/wasm32-wasi. To be
	#   replaced by CMAKE_INSTALL_LIBDIR=lib/$(cpu)-wasi when D130586
	#   ships.
	mkdir -p "$@"
	$(CMAKE_BIN) -B "$@" -S runtimes \
		-G Ninja \
		$(SCCACHE_CMAKE) \
		-DCMAKE_C_COMPILER_WORKS=ON \
		-DCMAKE_CXX_COMPILER_WORKS=ON \
		-DLLVM_COMPILER_CHECKED=ON \
		-DCMAKE_C_COMPILER_TARGET=$(cpu)-unknown-wasi \
		-DCMAKE_CXX_COMPILER_TARGET=$(cpu)-unknown-wasi \
		-DCMAKE_ASM_COMPILER_TARGET=$(cpu)-unknown-wasi \
		-DCMAKE_C_COMPILER=$(STAGE_2_BIN_DIR)/clang \
		-DCMAKE_CXX_COMPILER=$(STAGE_2_BIN_DIR)/clang++ \
		-DCMAKE_AR=$(STAGE_2_BIN_DIR)/llvm-ar \
		-DCMAKE_RANLIB=$(STAGE_2_BIN_DIR)/llvm-ranlib \
		-DCMAKE_C_FLAGS="$(opt_flags) $(STAGE_2_WASM_CFLAGS) -fno-stack-protector" \
		-DCMAKE_CXX_FLAGS="$(opt_flags) $(STAGE_2_WASM_CXXFLAGS) -fno-stack-protector" \
		-DCMAKE_SHARED_LINKER_FLAGS="$(LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
		-DCMAKE_MODULE_LINKER_FLAGS="$(LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
		-DCMAKE_EXE_LINKER_FLAGS="$(LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
		-DCMAKE_INSTALL_PREFIX=/usr/lib/llvm-$(LLVM_VERSION) \
		-DCMAKE_INSTALL_INCLUDEDIR=include/$(cpu)-wasi \
		-DLLVM_LIBDIR_SUFFIX=/$(cpu)-wasi \
		-DLLVM_CONFIG=$(STAGE_2_BIN_DIR)/llvm-config \
		-DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
		-DLIBCXX_USE_COMPILER_RT=ON \
		-DLIBCXXABI_USE_COMPILER_RT=ON \
		-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON \
		-DLIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY=ON \
		-DLIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY=OFF \
		-DCMAKE_BUILD_TYPE=RelWithDebugInfo \
		-DLIBCXX_CXX_ABI=libcxxabi \
		-DLIBCXX_ABI_VERSION=2 \
		-DLIBCXX_HAS_MUSL_LIBC:BOOL=ON \
		-DLIBCXX_ENABLE_SHARED:BOOL=OFF \
		-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY:BOOL=OFF \
		-DLIBCXX_ENABLE_EXCEPTIONS:BOOL=OFF \
		-DLIBCXX_ENABLE_FILESYSTEM:BOOL=OFF \
		-DLIBCXX_ENABLE_THREADS:BOOL=OFF \
		-DLIBCXX_HAS_PTHREAD_API:BOOL=OFF \
		-DLIBCXX_HAS_EXTERNAL_THREAD_API:BOOL=OFF \
		-DLIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY:BOOL=OFF \
		-DLIBCXXABI_ENABLE_SHARED:BOOL=OFF \
		-DLIBCXXABI_ENABLE_EXCEPTIONS:BOOL=OFF \
		-DLIBCXXABI_SILENT_TERMINATE:BOOL=ON \
		-DLIBCXXABI_ENABLE_THREADS:BOOL=OFF \
		-DLIBCXXABI_HAS_PTHREAD_API:BOOL=OFF \
		-DLIBCXXABI_HAS_EXTERNAL_THREAD_API:BOOL=OFF \
		-DLIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY:BOOL=OFF \
		-DLIBCXXABI_USE_LLVM_UNWINDER:BOOL=OFF
	$(TIME_COMMAND) ninja -C "$@" -j $(NJOBS) $(VERBOSE)
endif

# Build compiler-rt for wasm32 and wasm64. Build libcxx only for wasm32, as
# libcxx requires wasi-libc, which only exists for wasm32 right now.
stamps/debian-wasm-build: \
  build-wasm/compiler-rt-wasm32 \
  build-wasm/libcxx-wasm32-wasi \
  build-wasm/compiler-rt-wasm64
	touch $@

stamps/sccache-stats:
# If we used sccache, shows stats
	if test -f $(SCCACHE_CMD); then \
		ls -al $(SCCACHE_PATH)/; \
		mkdir -p /tmp/buildd/source/; \
		$(SCCACHE_CMD) --stats-format json --show-stats > /tmp/buildd/source/sccache-stats.json; \
		cat /tmp/buildd/source/sccache-stats.json; \
	fi
	touch $@

override_dh_auto_build: \
  stamps/debian-full-build \
  stamps/debian-libfuzzer-build \
  $(if $(filter libclc-%, $(packages)),stamps/debian-libclc-build) \
  $(if $(filter %-wasm32 %-wasm64, $(packages)),stamps/debian-wasm-build) \
  stamps/sccache-stats

override_dh_prep: stamps/build_doc
	dh_prep

ifeq ($(DOC_GENERATION), no)
stamps/build_doc:
	mkdir -p $(TARGET_BUILD)/tools/clang/stage2-bins/docs/ocamldoc/html/
	@echo "Don't build doc on this distro $(DISTRO)"
else
stamps/build_doc:
	BUILDDIR="_build"; \
	ALLSPHINXOPTS="-d $$BUILDDIR/doctrees ."; \
	cd $(CURDIR)/llvm/docs && \
		sphinx-build -b html $$ALLSPHINXOPTS $$BUILDDIR/html && \
		sphinx-build -b man $$ALLSPHINXOPTS $$BUILDDIR/man && \
	cd -; \
	cd $(CURDIR)/clang/docs && \
		sphinx-build -b html $$ALLSPHINXOPTS $$BUILDDIR/html && \
		sphinx-build -b man $$ALLSPHINXOPTS $$BUILDDIR/man

	-(if test "$(OCAML_ENABLE)" = yes; then \
	ninja -C "$(TARGET_BUILD_STAGE2)" $(VERBOSE) ocaml_doc; \
	fi)

	ninja -C $(TARGET_BUILD_STAGE2) $(VERBOSE) docs-llvm-html docs-clang-html docs-clang-tools-html docs-clang-tools-man docs-clang-man docs-llvm-man

ifeq (${POLLY_ENABLE},yes)
	ninja -C $(TARGET_BUILD_STAGE2) $(VERBOSE) docs-polly-html docs-polly-man
endif

# Rename manpages
	d=$(CURDIR)/llvm/docs/_build/man/; \
	if test -d $$d; then \
		cd $$d; \
		for f in *.1; do \
			echo "$$f"|grep $(LLVM_VERSION) || mv $$f `echo $$f|sed "s|\.1|-$(LLVM_VERSION).1|"`; \
		done; \
	else \
		echo "could not find $$d"; \
	fi
# the clang doc generation only generates clang manpage
# When it will do more, we should move that in the loop above
	cd $(CURDIR)/clang/docs/_build/man/ && mv clang.1 clang-$(LLVM_VERSION).1

# Remove the copy of jquery. See bug #701087
	for d in $(TARGET_BUILD_STAGE2)/docs/html/_static/ $(TARGET_BUILD_STAGE2)/tools/clang/docs/html/_static/ $(TARGET_BUILD_STAGE2)/tools/clang/tools/extra/docs/html/_static/; do \
		cd $$d && rm -f jquery.js && ln -s /usr/share/javascript/jquery/jquery.js && cd -; \
		cd $$d && rm -f underscore.js && ln -s /usr/share/javascript/underscore/underscore.js && cd -; \
	done

	mkdir -p debian/man/
	ls -al clang/tools/scan-view/bin/scan-view
	clang/tools/scan-view/bin/scan-view --help || true
	help2man --no-info --version-string=$(LLVM_VERSION) clang/tools/scan-view/bin/scan-view > debian/man/scan-view-$(LLVM_VERSION).1 || true
	help2man --no-info --version-string=$(LLVM_VERSION) clang/tools/clang-format/clang-format-diff.py > debian/man/clang-format-diff-$(LLVM_VERSION).1 || true

	CMDS="llvm-dwarfdump llvm-mc llvm-objdump llvm-rtdyld llvm-size llvm-ranlib lldb clang-format clang clang++ clang-tblgen clang-check clang-cpp clang-tidy clang-apply-replacements clang-query pp-trace sancov lli modularize clang-include-fixer find-all-symbols clang-reorder-fields ld.lld llvm-tblgen clang-change-namespace clang-offload-bundler clangd clang-repl git-clang-format run-clang-tidy"; \
	for f in $$CMDS; do \
		echo "Generating manpage of $$f"; \
		LD_LIBRARY_PATH=$(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/:/usr/lib/*/libfakeroot help2man --no-info --version-string=$(LLVM_VERSION) $(TARGET_BUILD_STAGE2)/bin/$$f > debian/man/$$f-$(LLVM_VERSION).1 || true; \
	done
	# Create the following directory regardless as libomp-XX-doc
	# is Architecture: all
	mkdir -p openmp/runtime/doc/doxygen/generated/html/

	if test "$(OPENMP_ENABLE)" = yes; then \
		cd openmp/runtime && doxygen doc/doxygen/config; cd -; \
		cd openmp/runtime/doc/doxygen/generated/html/ && rm jquery.js && ln -s /usr/share/javascript/jquery/jquery.js; \
	fi
	touch $@
endif

override_dh_auto_install:
	# Clean up temporary files to make sure the install works
	rm -rf $(find $(TARGET_BUILD) -wholename '*CMakeFiles*' -not -name CMakeLists.txt -a -name "*.dir" -type d)

	# install/fast enables a make install without recompiling temporary files
	LD_LIBRARY_PATH=$(STAGE_2_LIB_DIR):$$LD_LIBRARY_PATH DESTDIR=$(DEB_INST)/ ninja -C $(TARGET_BUILD) $(VERBOSE) stage2-install

	# Not used on Linux.
	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/bin/argdumper
	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/share/clang/clang-format-bbedit.applescript
	# Remove bat files https://bugs.llvm.org/show_bug.cgi?id=30755
	rm -f $(DEB_INST)/usr/share/clang/scan-build-$(LLVM_VERSION)/libexec/*.bat $(DEB_INST)/usr/share/clang/scan-build-$(LLVM_VERSION)/bin/*.bat

	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/libExampleIRTransforms.a
	# Remove an example - introduced in https://reviews.llvm.org/D61446
	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/libBye.a

	cp $(TARGET_BUILD_STAGE2)/bin/clang-query $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/bin

	# Only run on executable, not script
	chrpath -d `find $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/bin/ -type f -executable -exec file -i '{}' \; | grep 'x-executable; charset=binary'|cut -d: -f1`
ifeq (,$(filter $(DEB_HOST_ARCH), powerpc))
ifneq (,$(filter $(DEB_HOST_ARCH_OS),linux))
	# To fix custom-library-search-path
	chrpath -d $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)*/lib/linux/*.so || true
endif
endif

	if test "$(LIBUNWIND_ENABLE)" = yes; then \
		mkdir -p debian/tmp/usr/include/libunwind; \
		cp -R libunwind/include/* debian/tmp/usr/include/libunwind/; \
	fi

	: # libomp
	if test "$(OPENMP_ENABLE)" = yes; then \
		cd debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib; \
		ln -s libomp.so.$(SONAME_OPENMP) libomp.so; \
		cp libomp.so.$(SONAME_OPENMP) libomp-$(LLVM_VERSION).so.$(SONAME_OPENMP); \
	fi

# Remove artifact (where compiler-rt is built)
#	if test -d $(TARGET_BUILD)/tools/clang/runtime/compiler-rt/clang_linux; then \
#	cd $(TARGET_BUILD)/tools/clang/runtime/compiler-rt/clang_linux && rm -rf $$(find . -mindepth 2 -maxdepth 2 -type d) && rm -rf $$(find -empty) && rm -rf */.dir; \
#	fi

	mkdir -p $(CURDIR)/debian/clang-$(LLVM_VERSION)/usr/bin/
	cp compiler-rt/lib/asan/scripts/asan_symbolize.py $(CURDIR)/debian/clang-$(LLVM_VERSION)/usr/bin/asan_symbolize-$(LLVM_VERSION)

ifeq (${LIBFUZZER_ENABLE},yes)
	mkdir -p $(CURDIR)/debian/libfuzzer-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/lib/
	cp -v $(TARGET_BUILD)/libFuzzer.a $(CURDIR)/debian/libfuzzer-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/lib/
endif

# Because of hurd, we are more flexible in what we include in libclang-X.Y-rt
# but we don't want to install wasi files into libclang-rt as they have their own package
# So, we remove this directory from the package
	rm -f $(CURDIR)/debian/libclang-rt-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/lib/wasi/

# Create this fake directory to make the install libclang-common-dev happy
# under the unsupported archs of compiler-rt
	mkdir -p $(DEB_INST)/usr/lib/clang/$(LLVM_VERSION)/lib
	mkdir -p $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)/lib/
	mkdir -p $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)/lib/clang_linux/
	mkdir -p $(TARGET_BUILD)/tools/clang/runtime/compiler-rt/clang_linux/
	mkdir -p $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)/share/
# On some archs, the sanitizers are not built. As we explicitly includes some txt files, create
# a fake txt to make sure it doesn't fail
	echo "The *.txt files, if available, contain helper to override some of the errors messages." > $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)/README.txt
	echo "Please visit https://github.com/google/sanitizers/wiki/AddressSanitizer for help" >> $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)/README.txt
# Path changed. Make a copy of it
	cp $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)/README.txt $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)/share/README.txt

# Remove things that CMake  install but which aren't packaged yet,
# or are packaged from the source or build tree.
	mv $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/bin/clang-$(LLVM_VERSION) \
	   $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/bin/clang

# Probably useless
	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/python*/*-packages/six.py
	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/local/lib/python*/*-packages/six.py
	rm -rf $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/build/utils/lit/lit/__pycache__/ \
	$(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/build/utils/lit/lit/*/__pycache__/

	# workaround issue https://github.com/llvm/llvm-project/issues/57101
	find debian/tmp -iname 'libbolt_rt*.a' -path '*/build-llvm/*' -delete
	# Remove an osx file
	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/libbolt_rt_instr_osx.a

	if test -d libclc/build; then \
		DESTDIR=$(DEB_INST) ninja $(VERBOSE) -C libclc/build install; \
	fi

	if test -d build-wasm/compiler-rt-wasm32; then \
		DESTDIR=$(DEB_INST) ninja $(VERBOSE) -C build-wasm/compiler-rt-wasm32 install; \
	fi
	if test -d build-wasm/compiler-rt-wasm64; then \
		DESTDIR=$(DEB_INST) ninja $(VERBOSE) -C build-wasm/compiler-rt-wasm64 install; \
	fi
	if test -d build-wasm/libcxx-wasm32-wasi; then \
		DESTDIR=$(DEB_INST) ninja $(VERBOSE) -C build-wasm/libcxx-wasm32-wasi install; \
	fi


# Rename binaries
	mkdir -p $(DEB_INST)/usr/bin/
	cd $(DEB_INST)/usr/bin/; \
	rm -f *; \
	for f in ../lib/llvm-$(LLVM_VERSION)/bin/*; do \
		ln -s $$f `basename $$f`-$(LLVM_VERSION); \
		echo "Link $$f to `basename $$f`-$(LLVM_VERSION)"; \
	done

# Rename some stuff with the version name
	cp $(CURDIR)/clang/tools/scan-build/man/scan-build.1 $(CURDIR)/clang/tools/scan-build/man/scan-build-$(LLVM_VERSION).1

	# copy the vim files (except that tablegen does not exist for indent
	VIM_DIRS="ftdetect ftplugin syntax indent"; \
	for dir in $$VIM_DIRS; do \
		cp -f $(CURDIR)/llvm/utils/vim/$$dir/llvm.vim $(CURDIR)/llvm/utils/vim/$$dir/llvm-$(LLVM_VERSION).vim; \
		if test -f $(CURDIR)/llvm/utils/vim/$$dir/tablegen.vim; then \
			cp -f $(CURDIR)/llvm/utils/vim/$$dir/tablegen.vim $(CURDIR)/llvm/utils/vim/$$dir/tablegen-$(LLVM_VERSION).vim; \
		fi; \
	done
	cp -f $(CURDIR)/llvm/utils/vim/vimrc $(CURDIR)/llvm/utils/vim/llvm-$(LLVM_VERSION)-vimrc

	cp -f $(CURDIR)/clang/tools/clang-format/clang-format-diff.py $(CURDIR)/clang/tools/clang-format/clang-format-diff-$(LLVM_VERSION)

	cp -f $(CURDIR)/clang/tools/clang-format/clang-format.py clang/tools/clang-format/clang-format-$(LLVM_VERSION).py

	rm -rf clang/tools/scan-build-$(LLVM_VERSION)
	cp -fR $(CURDIR)/clang/tools/scan-build clang/tools/scan-build-$(LLVM_VERSION)

	rm -rf clang/tools/scan-build-py-$(LLVM_VERSION)
	cp -fR $(CURDIR)/clang/tools/scan-build-py clang/tools/scan-build-py-$(LLVM_VERSION)
	chmod +x clang/tools/scan-build-py-$(LLVM_VERSION)/bin/*

	rm -rf clang/tools/scan-view-$(LLVM_VERSION)
	cp -fR $(CURDIR)/clang/tools/scan-view clang/tools/scan-view-$(LLVM_VERSION)

# Remove some license files
	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/include/llvm/Support/LICENSE.TXT

# Disable CMake's LLVMExports package validation checks for target files that we may remove.
	sed -i \
	  -e '/_\(cmake_import_check_targets\|IMPORT_CHECK_TARGETS\) \(Polly\|sancov\|llvm-omp-device-info\|LibcTableGenUtil\|omptarget\|omp\)/ {s|^|#|}' \
	  $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/llvm/LLVMExports-*.cmake

# the obscure libLLVM.so.1 file ...
	sed -i \
	  -e '/_\(cmake_import_check_targets\|IMPORT_CHECK_TARGETS\) LLVM/ {s|^|#|}' \
	  -e '/_\(cmake_import_check_targets\|IMPORT_CHECK_TARGETS\)_.*\/libLLVM\.so\.1.*/ {s|^|#|}' \
	  $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/llvm/LLVMExports-*.cmake

# Also disable mlir-* checks in the cmake
	sed -i \
	  -e '/_\(cmake_import_check_targets\|IMPORT_CHECK_TARGETS\) \(mlir-\|MLIR\)/ {s|^|#|}' \
	  $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/llvm/LLVMExports-*.cmake

	sed -i \
	  -e '/_\(cmake_import_check_files_for\|IMPORT_CHECK_FILES_FOR\)_.*\/bin\/.*/ {s|^|#|}' \
	  $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/llvm/LLVMExports-*.cmake \
	  $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/clang/ClangTargets-*.cmake

	sed -i \
	  -e '/_\(cmake_import_check_files_for\|IMPORT_CHECK_FILES_FOR\)_\(mlir\|Polly\|MLIR\|LibcTableGenUtil\|omp\|omptarget\)/ {s|^|#|}' \
	  $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/llvm/LLVMExports-*.cmake \
	  $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/clang/ClangTargets-*.cmake

# Managed in python*-lldb-X.Y.links.in
	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/python*/*-packages/lldb/_lldb.so

# Manage the polly files. Sometimes, we build them. Sometimes not.
	if test "$(POLLY_ENABLE)" = yes; then \
		mkdir -p $(CURDIR)/debian/libclang-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/lib/ $(CURDIR)/debian/libpolly-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/include/polly/; \
		mv -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/libPolly* \
		$(CURDIR)/debian/libpolly-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/lib/; \
		rm -rf $(CURDIR)/debian/libpolly-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/include/polly; \
		mv -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/include/polly/ \
		$(CURDIR)/debian/libpolly-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/include/; \
	fi

	mkdir -p $(CURDIR)/debian/usr/share/doc/llvm-$(LLVM_VERSION)-doc/ $(CURDIR)/debian/usr/share/doc/clang-$(LLVM_VERSION)-doc/
	if test "$(DOC_GENERATION)" = yes; then \
		cp -R $(TARGET_BUILD_STAGE2)/docs/html $(CURDIR)/debian/usr/share/doc/llvm-$(LLVM_VERSION)-doc/; \
		cp -R $(TARGET_BUILD_STAGE2)/tools/clang/docs/html $(CURDIR)/debian/usr/share/doc/clang-$(LLVM_VERSION)-doc/; \
		cp -R $(TARGET_BUILD_STAGE2)/tools/clang/tools/extra/docs/html $(CURDIR)/debian/usr/share/doc/clang-$(LLVM_VERSION)-doc/clang-extra; \
	else \
		mkdir -p llvm/docs/_build/html clang/docs/_build/html/ tools/clang/tools/extra/docs/html openmp/runtime/doc/doxygen/generated/html/ debian/man/ clang/docs/_build/man/ llvm/docs/_build/man/; \
		rm debian/*$(LLVM_VERSION)*manpages; \
	fi

# Rename OCaml bindings
	if test "$(OCAML_ENABLE)" = yes; then \
		mkdir -p "$(DEB_INST)$(OCAML_STDLIB_DIR)"; \
		mkdir -p "$(DEB_INST)usr/lib/llvm-$(LLVM_VERSION)/docs/ocaml/html/html"; \
		mkdir -p "$(DEB_INST)usr/lib/llvm-$(LLVM_VERSION)/share/doc/llvm/ocaml-html/"; \
		if test -d "$(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/ocaml"; then \
			mv -f "$(DEB_INST)usr/lib/llvm-$(LLVM_VERSION)/lib/ocaml" \
			"$(DEB_INST)$(OCAML_STDLIB_DIR)/llvm-$(LLVM_VERSION)"; \
		fi; \
	fi

# For some reasons, from Ubuntu jammy, python stuff are installed in /local/lib, move it back
	if test -d $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/local/lib/; then \
		mv $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/local/lib/* $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/; \
		rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/python*/*-packages/six.py; \
		ls $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/local/; \
		rmdir $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/local/lib; \
		rmdir $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/local; \
	fi

# Disable the python binding for buster. not sure why it regressed
# regressed de4364f1ecaa..0745b0c0354a
	if test "$(DISTRO)" = "buster" -o "$(DEB_HOST_ARCH)" = "mips64el"; then \
		mkdir -p $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/share/gdb/python/ompd/; \
		touch $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/share/gdb/python/ompd/empty; \
	fi
	if test "$(LLDB_PYTHON_ENABLE)" = no; then \
		echo "" > debian/python3-lldb-$(LLVM_VERSION).install; \
	fi

# Remove some mlir example
	rm -f $(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/libMyExtensionCh*.a

# Delete the target build directory to save some space on the build systems
# All the files have been installed in $(CURDIR)/debian/tmp/ already
	rm -rf $(TARGET_BUILD)


# for apt.llvm.org and prerelease versions, we are depending on the
# upstream version. After release, assume that the ABIs don't change
# anymore with the point releases (X.Y.1, Y.Y.2, ...)
LLVM_RELEASE := $(LLVM_EPOCH)$(LLVM_VERSION).$(LLVM_VERSION_MINOR).0
override_dh_makeshlibs:
ifneq (,$(findstring ~,$(PKG_VERSION)))
	dh_makeshlibs -plibclang$(SONAME_EXT)-$(LLVM_VERSION)
	dh_makeshlibs -pliblldb-$(LLVM_VERSION)
	dh_makeshlibs -plibllvm$(LLVM_VERSION)
	dh_makeshlibs -plibomp$(SONAME_OPENMP)-$(LLVM_VERSION)
else
	dh_makeshlibs -plibclang$(SONAME_EXT)-$(LLVM_VERSION) \
		'-Vlibclang$(SONAME_EXT)-$(LLVM_VERSION) (>= $(LLVM_RELEASE))'
	dh_makeshlibs -pliblldb-$(LLVM_VERSION) \
		'-Vliblldb-$(LLVM_VERSION) (>= $(LLVM_RELEASE))'
	dh_makeshlibs -plibllvm$(LLVM_VERSION) \
		'-Vlibllvm$(LLVM_VERSION) (>= $(LLVM_RELEASE))'
	dh_makeshlibs -plibomp$(SONAME_OPENMP)-$(LLVM_VERSION) \
		'-Vlibomp$(SONAME_OPENMP)-$(LLVM_VERSION) (>= $(LLVM_RELEASE))'
endif
	dh_makeshlibs --remaining-packages -V

override_dh_shlibdeps:
# Ignore asan libraries. They would trigger dependencies to multiarch libraries
	dh_shlibdeps -l$(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/ -Xlibclang_rt.asan -Xlibclang_rt.asan -Xlibclang_rt.asan-*.so -Xlibclang_rt.asan-*.so

override_dh_installman:
	if test -f lld/docs/ld.lld.1; then \
	mv lld/docs/ld.lld.1 lld/docs/ld.lld-$(LLVM_VERSION).1; \
	fi
	dh_installman
# Make sure that lli manpage is only in llvm-3.2-runtime (See #697117)
	rm -f $(CURDIR)/debian/llvm-$(LLVM_VERSION)/usr/share/man/man1/lli*


override_dh_strip:
	: # running out of diskspace on the buildds
	find $(TARGET_BUILD) -name '*.o' -o -name '*.a' -type f | xargs -r rm -f
ifeq (0, $(strip $(shell dpkg --compare-versions $(DH_VERSION) ge 9.20160114; echo $$?)))
	: # If we don't have the right version of debhelper, don't run the option
	dh_strip -p libclang$(SONAME_EXT)-$(LLVM_VERSION) --dbgsym-migration='libclang$(SONAME_EXT)-$(LLVM_VERSION)-dbg'
	dh_strip -p libllvm$(LLVM_VERSION) --dbgsym-migration='libllvm$(LLVM_VERSION)-dbg'
	dh_strip -p liblldb-$(LLVM_VERSION) --dbgsym-migration='liblldb-$(LLVM_VERSION)-dbg'
	dh_strip -p libomp$(SONAME_OPENMP)-$(LLVM_VERSION) --dbgsym-migration='libomp$(SONAME_OPENMP)-$(LLVM_VERSION)-dbg'
endif
# ifeq (${LLD_ENABLE},yes)
# 	PATH=$(CURDIR)/:$$PATH dh_strip -p liblld-$(LLVM_VERSION) --dbg-package=liblld-$(LLVM_VERSION)-dbg
# endif
ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' binutils) lt 2.31.1-11 ; echo $$?),0)
	: # building with clang, binutils/strip has hard time stripping some libs because of
	: # https://sourceware.org/bugzilla/show_bug.cgi?id=23788
	: # use llvm-strip instead
	: # Workaround some issues with stripping by using llvm's
	if test ! -f $(CURDIR)/strip; then \
		ln -s $(CURDIR)/debian/llvm-$(LLVM_VERSION)/usr/lib/llvm-$(LLVM_VERSION)/bin/llvm-strip $(CURDIR)/strip; \
	fi
	ls -al $(CURDIR)/debian/.debhelper/*/dbgsym-root/usr/lib/debug/.build-id/*/*|| true
	: # On some old version of Debian (stretch) and Ubuntu, Rules-Requires-Root isn't supported
	: # Sometime, it fails because of chown: changing ownership of 'debian/.debhelper/clang-7/dbgsym-root/usr/lib/debug/.build-id/37/ba506ae9d2f82219bf5c552f7c09853052b2b0.debug': Operation not permitted
	: # Therefore, continue when we encounter an error
	PATH=$(CURDIR)/:$$PATH LD_LIBRARY_PATH=$(DEB_INST)/usr/lib/llvm-$(LLVM_VERSION)/lib/:/usr/lib/*/libfakeroot dh_strip -a -v || true
	: # Remove the workaround
	rm $(CURDIR)/strip
	: # for some reasons, the +x might be removed
	chmod -f +x $(CURDIR)/debian/*/usr/lib/llvm-$(LLVM_VERSION)/bin/* || true
else
	# GNU strip doesn't recognize WebAssembly binaries, and actually corrupts them.
	# llvm-strip (as of 15.0.2) fails with --strip-debug (but works with --strip-all)
	dh_strip -a -v -Xlibclang_rt.builtins-wasm32.a -Xlibclang_rt.builtins-wasm64.a -Xusr/lib/wasm32-wasi
endif

override_dh_install:
	: # fix libLLVM.so.1 install, install it under the SONAME
	-ls -l debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/libLLVM*.so*
	test -f debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/libLLVM.so.1

	if [ -f debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/libLLVM.so.1 ] && [ ! -h debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/libLLVM.so.1 ]; then \
	  soname=$$(objdump -p debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/libLLVM.so.1 | awk '/ *SONAME / {print $$2}'); \
	  rm -f debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/$$soname; \
	  mv debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/libLLVM.so.1 debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/$$soname; \
	  ln -sf $$soname debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/libLLVM-$(LLVM_VERSION).so; \
	  ln -sf $$soname debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/libLLVM.so; \
	fi

ifeq (${POLLY_ENABLE},yes)
# only for arch:any builds
ifneq (,$(filter libpolly-$(LLVM_VERSION)-dev, $(packages)))
	dh_install -p libpolly-$(LLVM_VERSION)-dev usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/polly/*.cmake usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/polly
# On old Debian & Ubuntu, removing the files is necessary
	rm -rf debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/polly/*.cmake
else
	rm -rf $(CURDIR)/debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/cmake/polly/*.cmake
endif
endif
	dh_install --fail-missing ${skip_packages}
# Move the libc++ abi files from libc++ to libc++-abi for the wasm32 packages
# These packages are arch: all, so only do so when the packages are built
ifneq (,$(filter libc++-$(LLVM_VERSION)-dev-wasm32, $(packages)))
	mkdir -p $(CURDIR)/debian/libc++abi-$(LLVM_VERSION)-dev-wasm32/usr/lib/llvm-$(LLVM_VERSION)/include/wasm32-wasi/c++/v1
	if test -f $(CURDIR)/debian/libc++-$(LLVM_VERSION)-dev-wasm32/usr/lib/llvm-$(LLVM_VERSION)/include/wasm32-wasi/c++/v1/__cxxabi_config.h; then \
		mv $(CURDIR)/debian/libc++-$(LLVM_VERSION)-dev-wasm32/usr/lib/llvm-$(LLVM_VERSION)/include/wasm32-wasi/c++/v1/__cxxabi_config.h \
			$(CURDIR)/debian/libc++abi-$(LLVM_VERSION)-dev-wasm32/usr/lib/llvm-$(LLVM_VERSION)/include/wasm32-wasi/c++/v1/__cxxabi_config.h; \
		mv $(CURDIR)/debian/libc++-$(LLVM_VERSION)-dev-wasm32/usr/lib/llvm-$(LLVM_VERSION)/include/wasm32-wasi/c++/v1/cxxabi.h \
			$(CURDIR)/debian/libc++abi-$(LLVM_VERSION)-dev-wasm32/usr/lib/llvm-$(LLVM_VERSION)/include/wasm32-wasi/c++/v1/cxxabi.h; \
	fi
endif
# Because of hurd, we are more flexible in what we include in libclang-X.Y-rt
# but we don't want to install wasi files into libclang-rt as they have their own package
# So, we remove this directory from the package
	rm -fr $(CURDIR)/debian/libclang-rt-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)/lib/wasi/

	if [ -d debian/llvm-$(LLVM_VERSION)/usr/share/doc/llvm-$(LLVM_VERSION) ]; then \
	  for svg in usage-*.svg; do \
	    [ -f $$svg ] || continue; \
	    xz -9v $$svg; \
	    cp -p $$svg.xz debian/llvm-$(LLVM_VERSION)/usr/share/doc/llvm-$(LLVM_VERSION)/.; \
	  done; \
	fi

stamps/repack_a_llvm_ir:
ifeq (${LTO_ENABLE},yes)
# with LTO, .a contains llvm ir instead of native code. So, recompile them
	NJOBS="$(NJOBS)" P_TO_LLVM="$(CURDIR)" VERSION=$(LLVM_VERSION) bash -v debian/llvm-compile-lto-elf.sh $(CXXFLAGS_EXTRA)
endif
	touch $@


override_dh_installdeb: stamps/repack_a_llvm_ir
# Managed by the package
	dh_installdeb -a

	rm -f $(CURDIR)/debian/tmp/usr/lib/llvm-$(LLVM_VERSION)/lib/python*/*-packages/lldb/__init__.pyc $(CURDIR)/debian/python*-lldb-$(LLVM_VERSION)/usr/lib/llvm-$(LLVM_VERSION)/lib/python*/*-packages/lldb/__init__.pyc
	rm -f $(CURDIR)/debian/clang-$(LLVM_VERSION)-examples/usr/share/doc/clang-$(LLVM_VERSION)-examples/examples/*Make*

# the openmp header files moved to the same path as lib clang headers.
# To make sure they aren't conflicting ( https://bugs.llvm.org/show_bug.cgi?id=46977 )
# Remove them from the libclang-common package
	rm -f $(CURDIR)/debian/libclang-common-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/lib/clang/$(LLVM_VERSION)/include/omp*.h

# Remove some libc++ abi files in the libc++ file. See bug #969274
	rm -f $(CURDIR)/debian/libc++-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/include/c++/__cxxabi_config.h $(CURDIR)/debian/libc++-$(LLVM_VERSION)-dev/usr/lib/llvm-$(LLVM_VERSION)/include/c++/cxxabi.h

# Remove auto generated python pyc
	find $(CURDIR)/debian/llvm-$(LLVM_VERSION)-tools/usr/lib/llvm-$(LLVM_VERSION)/ -name '*.pyc' | xargs -r rm -f

ifeq (${RUN_TEST},yes)
# List of the archs we know we have 100 % tests working
ARCH_LLVM_TEST_OK := i386 amd64

override_dh_auto_test:
	echo "Running tests: $(RUN_TEST)"
# LLVM tests
ifneq (,$(findstring $(DEB_HOST_ARCH),$(ARCH_LLVM_TEST_OK)))
# logs the output to check-llvm_build_log.txt for validation through autopkgtest
	ninja $(VERBOSE) -C $(TARGET_BUILD) stage2-check-llvm | tee check-llvm_build_log.txt
else
	ninja $(VERBOSE) -C $(TARGET_BUILD) stage2-check-llvm || true
endif

# Clang tests
	ninja $(VERBOSE) -C $(TARGET_BUILD) stage2-check-clang || true

# Clang extra tests (ex: clang-tidy)
	ninja $(VERBOSE) -C $(TARGET_BUILD_STAGE2) check-clang-tools || true

# LLD tests
ifeq (${LLD_ENABLE},yes)
	ninja $(VERBOSE) -C $(TARGET_BUILD_STAGE2) check-lld || true
endif

# Sanitizer
	ninja $(VERBOSE) -C $(TARGET_BUILD_STAGE2) check-sanitizer || true

# Libcxx
	ninja $(VERBOSE) -C $(TARGET_BUILD_STAGE2) check-libcxx || true

# Libc
	ninja $(VERBOSE) -C $(TARGET_BUILD_STAGE2) check-libc || true

# Libcxxabi
	ninja $(VERBOSE) -C $(TARGET_BUILD_STAGE2) check-libcxxabi || true

# MLIR
ifeq (,$(filter $(DEB_HOST_ARCH), armel armhf i386 x32))
# Do not run MLIR test on i386 because of
# https://github.com/llvm/llvm-project/issues/58357
	ninja $(VERBOSE) -C $(TARGET_BUILD_STAGE2) check-mlir || true
endif

# Libclc
	ninja $(VERBOSE) -C libclc/build test || true

# LLDB tests
ifeq (,$(filter $(DEB_HOST_ARCH), $(LLDB_DISABLE_ARCHS) armhf armel))
ifneq (,$(filter codecoverage,$(DEB_BUILD_OPTIONS)))
# Create a symlink to run the testsuite: see https://bugs.archlinux.org/task/50759
	cd $(CURDIR)/$(TARGET_BUILD)/lib/python*/*-packages/; \
		if test ! -e _lldb.so; then \
			ln -s lldb/_lldb.so; \
		fi
	if test "$(CODECOVERAGE)" = "no"; then \
	LD_LIBRARY_PATH=$$LD_LIBRARY_PATH:$(CURDIR)/$(TARGET_BUILD)/lib/ ninja $(VERBOSE) -C $(TARGET_BUILD) check-lldb || true; \
	fi
	# remove the workaround
	rm $(CURDIR)/$(TARGET_BUILD)/lib/python*/*-packages/_lldb.so
endif
endif

# Polly tests
#ifeq (${POLLY_ENABLE},yes)
#	ninja -C $(TARGET_BUILD) check-polly || true
#endif

# Managed by debian build system
	rm -f $(CURDIR)/$(TARGET_BUILD)/lib/python*/*-packages/lldb/_lldb.so

# The compression of the code coverage report is done in the
# hook B21GetCoverageResults on the server
	if test "$(CODECOVERAGE)" = "yes"; then \
		REPORT=reports/llvm-toolchain.info; \
		mkdir -p reports/; \
		lcov --directory $(TARGET_BUILD)/ --capture --ignore-errors source --output-file $$REPORT; \
		lcov --remove $$REPORT "/usr*" -o $$REPORT; \
		genhtml -o reports/coverage --show-details --highlight --legend $$REPORT; \
		chmod 0755 `find reports/coverage -type d`; \
		chmod 0644 `find reports/coverage -type f`; \
	fi
else
override_dh_auto_test:
	@echo "Skipping tests"
endif


override_dh_builddeb:
	dh_builddeb ${skip_packages}

override_dh_gencontrol: stamps/sccache-stats
	dh_gencontrol ${skip_packages} -- $(control_vars)

override_dh_auto_clean:
	rm -rf $(TARGET_BUILD) llvm/docs/_build/ clang/docs/_build tools/clang/docs/_html/
# QA tools
	rm -rf cov-int/ reports/
	find utils -name '*.pyc' | xargs -r rm -f
	# Use -I because a test has a space in its name
	find lldb/test -iname '*.pyc' | xargs -I{} -r rm -f {}
	rm -f $(CURDIR)/utils/vim/llvm-$(LLVM_VERSION).vim $(CURDIR)/utils/vim/tablegen-$(LLVM_VERSION).vim
	rm -f $(CURDIR)/clang/tools/clang-format/clang-format-diff-$(LLVM_VERSION)
	rm -f $(CURDIR)/clang/tools/clang-format/clang-format-$(LLVM_VERSION).py
	rm -rf libclc/build
	rm -rf build-wasm
	if test -f lld/docs/ld.lld-$(LLVM_VERSION).1; then \
		mv lld/docs/ld.lld-$(LLVM_VERSION).1 lld/docs/ld.lld.1; \
	fi
	for f in debian/*.in; do \
	    f2=$$(echo $$f | sed 's/\.in$$//;s/X\.Y/$(LLVM_VERSION)/'); \
	    case $$f2 in \
		debian/control|debian/watch) \
			echo "keep $$f2";; \
		*) \
			rm -f $$f2; \
	    esac; \
	done
	if test "$(SCAN_BUILD)" = "yes"; then \
		patch -f -R -p1 < debian/patches/on-the-fly/use-scan-build-runtimes.diff||true; \
	fi
	: # for some reason, the docs are written to debian/usr and debian/man ...
	rm -rf debian/usr debian/man
	: # remove extra stamps
	rm -f override_dh_auto_install
	rm -rf stamps
	rm -f usage-*.svg*

.PHONY: override_dh_strip preconfigure