#
#  BSD LICENSE
#
#  Copyright (c) Intel Corporation.
#  All rights reserved.
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions
#  are met:
#
#    * Redistributions of source code must retain the above copyright
#      notice, this list of conditions and the following disclaimer.
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#      the documentation and/or other materials provided with the
#      distribution.
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#      from this software without specific prior written permission.
#
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#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
#  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

# This makefile snippet must define the following flags:
# ENV_CFLAGS
# ENV_CXXFLAGS
# ENV_LIBS
# ENV_LINKER_ARGS

DPDK_DIR = $(CONFIG_DPDK_DIR)

export DPDK_ABS_DIR = $(abspath $(DPDK_DIR))

ifneq (, $(wildcard $(DPDK_ABS_DIR)/include/rte_config.h))
DPDK_INC_DIR := $(DPDK_ABS_DIR)/include
else
DPDK_INC_DIR := $(DPDK_ABS_DIR)/include/dpdk
endif
DPDK_INC := -I$(DPDK_INC_DIR)

ifneq (, $(wildcard $(DPDK_ABS_DIR)/lib/librte_eal.a))
DPDK_LIB_EXT = .a
else
DPDK_LIB_EXT = .so
endif

DPDK_LIB_LIST = rte_eal rte_mempool rte_ring

# librte_mempool_ring was new added from DPDK 17.05. Link this library used for
#   ring based mempool management API.
ifneq (, $(wildcard $(DPDK_ABS_DIR)/lib/librte_mempool_ring.*))
DPDK_LIB_LIST += rte_mempool_ring
endif

# librte_malloc was removed after DPDK 2.1.  Link this library conditionally based on its
#  existence to maintain backward compatibility.
ifneq ($(wildcard $(DPDK_ABS_DIR)/lib/librte_malloc.*),)
DPDK_LIB_LIST += rte_malloc
endif

# librte_pci and librte_bus_pci were added in DPDK 17.11. Link these libraries conditionally
# based on their existence to maintain backward compatibility.
ifneq (, $(wildcard $(DPDK_ABS_DIR)/lib/librte_pci.*))
DPDK_LIB_LIST += rte_pci
endif

ifneq (, $(wildcard $(DPDK_ABS_DIR)/lib/librte_bus_pci.*))
DPDK_LIB_LIST += rte_bus_pci
endif

ifeq ($(CONFIG_CRYPTO),y)
DPDK_LIB_LIST += rte_cryptodev rte_reorder rte_bus_vdev rte_pmd_aesni_mb rte_pmd_qat rte_mbuf
endif

ifneq (, $(wildcard $(DPDK_ABS_DIR)/lib/librte_kvargs.*))
DPDK_LIB_LIST += rte_kvargs
endif

DPDK_LIB = $(DPDK_LIB_LIST:%=$(DPDK_ABS_DIR)/lib/lib%$(DPDK_LIB_EXT))

# SPDK memory registration requires experimental (deprecated) rte_memory API for DPDK 18.05
ENV_CFLAGS = $(DPDK_INC) -Wno-deprecated-declarations
ENV_CXXFLAGS = $(ENV_CFLAGS)
ENV_DPDK_FILE = $(call spdk_lib_list_to_static_libs,env_dpdk)
ENV_LIBS = $(ENV_DPDK_FILE) $(DPDK_LIB)
ENV_LINKER_ARGS = $(ENV_DPDK_FILE) -Wl,--whole-archive $(DPDK_LIB) -Wl,--no-whole-archive

ifeq ($(CONFIG_CRYPTO),y)
ENV_LINKER_ARGS += -lIPSec_MB
endif

ifneq (,$(wildcard $(DPDK_INC_DIR)/rte_config.h))
ifneq (,$(shell grep -e "define RTE_LIBRTE_VHOST_NUMA 1" -e "define RTE_EAL_NUMA_AWARE_HUGEPAGES 1" $(DPDK_INC_DIR)/rte_config.h))
ENV_LINKER_ARGS += -lnuma
endif
endif

ifeq ($(OS),Linux)
ENV_LINKER_ARGS += -ldl
endif
ifeq ($(OS),FreeBSD)
ENV_LINKER_ARGS += -lexecinfo
endif