#  SPDX-License-Identifier: BSD-3-Clause
#  Copyright (C) 2017 Intel Corporation.
#  All rights reserved.
#  Copyright (c) 2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#

SPDK_ROOT_DIR := $(abspath $(CURDIR)/..)
include $(SPDK_ROOT_DIR)/mk/spdk.common.mk

.PHONY: all clean install uninstall

DPDK_OPTS = -Denable_docs=false
DPDK_OPTS += -Dtests=false
DPDK_CFLAGS =

DPDK_KMODS = false
ifeq ($(OS),FreeBSD)
DPDK_KMODS = true
endif
DPDK_OPTS += -Denable_kmods=$(DPDK_KMODS)

ifeq ($(CONFIG_DEBUG),y)
DPDK_OPTS += --buildtype=debug
endif

ifeq ($(CONFIG_LTO),y)
# dpdk complains about compiler not supporting fat LTO objects when clang is in use so don't enable it in such a instance
ifneq ($(CC_TYPE),clang)
DPDK_OPTS += -Db_lto=true
endif
endif

# the drivers we use
DPDK_DRIVERS = bus bus/pci bus/vdev mempool/ring

# Core DPDK libs
DPDK_LIBS = eal ring mempool pci
DPDK_LIBS += kvargs telemetry
# Governor required libs
DPDK_LIBS += power timer ethdev net

# common crypto/compress drivers
ifeq ($(findstring y,$(CONFIG_DPDK_COMPRESSDEV)$(CONFIG_CRYPTO)$(CONFIG_VBDEV_COMPRESS)),y)
DPDK_DRIVERS += crypto/qat compress/qat common/qat
endif

# common mlx5 libs
ifeq ($(findstring y,$(CONFIG_CRYPTO_MLX5)$(CONFIG_VBDEV_COMPRESS_MLX5)),y)
DPDK_DRIVERS += common/mlx5 bus/auxiliary
endif

ifeq ($(CONFIG_CRYPTO),y)
DPDK_DRIVERS += crypto
# aesni_mb is name of the PMD in DPDK 21.08 and earlier
DPDK_DRIVERS += crypto/aesni_mb
ifeq ($(CONFIG_CRYPTO_MLX5),y)
DPDK_DRIVERS += crypto/mlx5
endif
ifeq ($(CONFIG_IPSEC_MB),y)
DPDK_DRIVERS += crypto/ipsec_mb
DPDK_CFLAGS += -I$(IPSEC_MB_DIR)
# Workaround for DPDK 22.07 and DPDK 22.11.1,
# will be able to remove starting with DPDK 23.03.
ifeq ($(shell grep "define NO_COMPAT_IMB_API_053" $(SPDK_ROOT_DIR)/dpdk/drivers/crypto/qat/qat_sym_session.c), )
DPDK_CFLAGS += -DNO_COMPAT_IMB_API_053
endif
DPDK_LDFLAGS += -L$(IPSEC_MB_DIR)
endif
endif

ifeq ($(findstring y,$(CONFIG_DPDK_COMPRESSDEV)$(CONFIG_VBDEV_COMPRESS)),y)
DPDK_DRIVERS += compress compress/isal
ifeq ($(CONFIG_VBDEV_COMPRESS_MLX5),y)
DPDK_DRIVERS += compress/mlx5
endif
DPDK_CFLAGS += -I$(ISAL_DIR)
DPDK_LDFLAGS += -L$(ISAL_DIR)/.libs -lisal
endif

DPDK_ENABLED_DRIVERS = $(shell echo $(DPDK_DRIVERS) | sed -E "s/ +/,/g")

# crypto & compress deps
DPDK_LIBS += reorder cryptodev
DPDK_LIBS += compressdev
DPDK_LIBS += security

# vhost and deps
DPDK_LIBS += cryptodev mbuf cmdline meter hash vhost dmadev

# raid5 deps
DPDK_LIBS += hash rcu

DPDK_OPTS += -Dcpu_instruction_set=$(TARGET_ARCHITECTURE)

ifneq ($(CONFIG_CROSS_PREFIX),)
ifeq ($(findstring mingw,$(CONFIG_CROSS_PREFIX)),mingw)
DPDK_OPTS += --cross-file $(SPDK_ROOT_DIR)/dpdk/config/x86/cross-mingw
else
$(error Automatic DPDK cross build is not supported. Please compile DPDK manually \
with e.g. `meson build --cross-file config/arm/arm64_armv8_linux_gcc`)
endif
endif

DPDK_CFLAGS += -fPIC

ifeq ($(CONFIG_WERROR),y)
DPDK_CFLAGS += -Werror
else
DPDK_CFLAGS += -Wno-error
endif

ifeq ($(CONFIG_CET),y)
DPDK_CFLAGS += -fcf-protection
DPDK_LDFLAGS += -fcf-protection
endif

ifdef EXTRA_DPDK_CFLAGS
$(warning EXTRA_DPDK_CFLAGS defined, possibly to work around an unsupported compiler version)
$(shell sleep 1)
endif

# Allow users to specify EXTRA_DPDK_CFLAGS if they want to build DPDK using unsupported compiler versions
DPDK_CFLAGS += $(EXTRA_DPDK_CFLAGS)

ifeq ($(CC_TYPE),gcc)
GCC_MAJOR = $(shell echo __GNUC__ | $(CC) -E -x c - | tail -n 1)
ifeq ($(shell test $(GCC_MAJOR) -ge 10 && echo 1), 1)
#1. gcc 10 complains on operations with zero size arrays in rte_cryptodev.c, so
#disable this warning
#2. gcc 10 disables fcommon by default and complains on multiple definition of
#aesni_mb_logtype_driver symbol which is defined in header file and presented in several
#translation units
DPDK_CFLAGS += -Wno-stringop-overflow -fcommon
ifeq ($(shell test $(GCC_MAJOR) -ge 12 && echo 1), 1)
# 3. gcc 12 reports reading incorect size from a region. Seems like false positive,
# see issue #2460
DPDK_CFLAGS += -Wno-stringop-overread
# 4. gcc 12 reports array subscript * is outside array bounds. Seems like false positive,
# see issue #2668
DPDK_CFLAGS += -Wno-array-bounds
endif
endif
endif

# Force-disable scan-build
SUB_CC = $(patsubst %ccc-analyzer,$(DEFAULT_CC),$(CC))

DPDK_ALL_LIB_DIRS = $(shell find $(SPDK_ROOT_DIR)/dpdk/lib -mindepth 1 -maxdepth 1 -type d)
DPDK_ALL_LIBS = $(DPDK_ALL_LIB_DIRS:$(SPDK_ROOT_DIR)/dpdk/lib/%=%)
DPDK_DISABLED_LIBS = $(shell echo $(filter-out $(DPDK_LIBS),$(DPDK_ALL_LIBS)) | sed -E "s/ +/,/g")

ifeq ($(shell grep -q disable_apps $(SPDK_ROOT_DIR)/dpdk/meson_options.txt && echo 1), 1)
DPDK_ALL_APP_DIRS = $(shell find $(SPDK_ROOT_DIR)/dpdk/app -mindepth 1 -maxdepth 1 -type d)
DPDK_ALL_APPS = $(DPDK_ALL_APP_DIRS:$(SPDK_ROOT_DIR)/dpdk/app/%=%)
DPDK_DISABLED_APPS = -Ddisable_apps="$(shell echo $(DPDK_ALL_APPS) | sed -E "s/ +/,/g")"
endif

ifneq ($(OS),FreeBSD)
SED_INPLACE_FLAG = "-i"
MESON_PREFIX = $(SPDK_ROOT_DIR)/dpdk/build
else
SED_INPLACE_FLAG = "-i ''"
MESON_PREFIX = "/"
endif

# Some ninja versions come with a (broken?) jobserver which defaults to use
# only 1 thread for the build. We workaround this by specifying -j to ninja
# with the same value as top-makefile. This is OK as long as DPDK is not built
# in parallel with anything else, which is the case for now.
ifeq ($(MAKE_PID),)
MAKE_PID := $(shell echo $$PPID)
endif

MAKE_NUMJOBS := $(shell ps T | sed -nE 's/[[:space:]]*$(MAKE_PID)[[:space:]].* (-j|--jobs=)( *[0-9]+).*/\1\2/p')

all: $(SPDK_ROOT_DIR)/dpdk/build-tmp
	$(Q)# DPDK doesn't handle nested make calls, so unset MAKEFLAGS
	$(Q)env -u MAKEFLAGS ninja -C $(SPDK_ROOT_DIR)/dpdk/build-tmp $(MAKE_NUMJOBS)
	$(Q) \
	# Meson on FreeBSD sometimes appends --prefix value to the default DESTDIR (which is e.g. \
	# /usr/local) instead of replacing it. --prefix needs to be an absolute path, so we set \
	# it to / and then set DESTDIR directly, so libs and headers are copied to "DESTDIR//". \
	# DPDK kernel modules are set to install in $DESTDIR/boot/modules, but we move them \
	# to DESTDIR/kmod to be consistent with the makefile build. \
	# \
	# Also use meson install --only-changed instead of ninja install so that the shared \
	# libraries don't get reinstalled when they haven't been rebuilt - this avoids all of \
	# our applications getting relinked even when nothing has changed.
	$(Q)if [ "$(OS)" = "FreeBSD" ]; then \
		env -u MAKEFLAGS DESTDIR=$(SPDK_ROOT_DIR)/dpdk/build ninja -C $(SPDK_ROOT_DIR)/dpdk/build-tmp $(MAKE_NUMJOBS) install > /dev/null && \
		mv $(SPDK_ROOT_DIR)/dpdk/build/boot/modules $(SPDK_ROOT_DIR)/dpdk/build/kmod; \
	else \
		env -u MAKEFLAGS meson install -C $(SPDK_ROOT_DIR)/dpdk/build-tmp --only-changed > /dev/null; \
	fi

$(SPDK_ROOT_DIR)/dpdk/build-tmp: $(SPDK_ROOT_DIR)/mk/cc.mk $(SPDK_ROOT_DIR)/include/spdk/config.h
	$(Q)rm -rf $(SPDK_ROOT_DIR)/dpdk/build $(SPDK_ROOT_DIR)/dpdk/build-tmp
	$(Q)cd "$(SPDK_ROOT_DIR)/dpdk"; CC="$(SUB_CC)" meson setup --prefix="$(MESON_PREFIX)" --libdir lib -Dc_args="$(DPDK_CFLAGS)" -Dc_link_args="$(DPDK_LDFLAGS)" $(DPDK_OPTS) -Denable_drivers="$(DPDK_ENABLED_DRIVERS)" -Ddisable_libs="$(DPDK_DISABLED_LIBS)" $(DPDK_DISABLED_APPS) $(DPDKBUILD_FLAGS) build-tmp
	$(Q)sed $(SED_INPLACE_FLAG) 's/#define RTE_EAL_PMD_PATH .*/#define RTE_EAL_PMD_PATH ""/g' $(SPDK_ROOT_DIR)/dpdk/build-tmp/rte_build_config.h

clean:
	$(Q)rm -rf $(SPDK_ROOT_DIR)/dpdk/build $(SPDK_ROOT_DIR)/dpdk/build-tmp

install:
	@:

uninstall:
	@: