cmake_minimum_required(VERSION 3.0)

project(DPDK-integration)

include(ExternalProject)

# Merge multiple patches into one patch file
set(DPDK_PATCH_DIR ${CMAKE_CURRENT_SOURCE_DIR}/dpdk)
set(MERGED_PATCH_FILE "${CMAKE_BINARY_DIR}/merged_patches.patch")
set(DPDP_PATCH_FILES ${DPDK_PATCH_DIR}/dpdk-21.11.4-memzone-namesize.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-fm10k-rxtx-vec.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-mempool-ops-get-count.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-bypass-flow-err-func.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-fix-dup-msl-name-sec-process.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-fix-af-packet-run-as-slave-of-bond.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-mp-max-fds.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-dpdk-devbind-dump.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-dpdk-hugepages-path.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-dpdk-pcapng-path.patch
                    ${DPDK_PATCH_DIR}/dpdk-21.11.4-extend-max-virtqueue-pairs.patch)
execute_process(COMMAND cat ${DPDP_PATCH_FILES} OUTPUT_FILE ${MERGED_PATCH_FILE})


if(NOT CMAKE_BUILD_TYPE)
    set(CMAKE_BUILD_TYPE Release) # 或者 Debug
endif()

if(NOT RTE_MARCH)
	set(RTE_MARCH "corei7")
endif()

if(CMAKE_BUILD_TYPE STREQUAL "Debug")
    set(DPDK_BUILD_TYPE debug)
else()
    set(DPDK_BUILD_TYPE debugoptimized)
endif()

set(DPDK_MESON_DISABLED_DRIVERS "common/cpt,common/dpaax,common/octeontx,common/octeontx2,common/sfc_efx,common/qat,bus/dpaa,bus/fslmc,bus/ifpga,bus/vmbus,mempool/bucket,mempool/dpaa,mempool/dpaa2,mempool/octeontx,mempool/octeontx2,mempool/stack,raw/ifpga,raw/ioat,raw/ntb,raw/octeontx2_dma,raw/octeontx2_ep,raw/skeleton,compress/zlib,regex/octeontx2,vdpa/ifc,event/skeleton,event/dlb,event/dlb2,event/opdl,sevent/keleton,event/sw,event/dsw,baseband/null,baseband/turbo_sw,baseband/fpga_lte_fec,baseband/fpga_5gnr_fec,baseband/acc100,crypto/bcmfs,crypto/ccp,crypto/nitrox,crypto/null,crypto/openssl,crypto/scheduler,crypto/virtio")

# Although default_library=static has been set, both dynamic and static libraries are compiled. a little strange
ExternalProject_Add(dpdk PREFIX dpdk
        URL ${CMAKE_CURRENT_SOURCE_DIR}/dpdk/dpdk-21.11.4.tar.xz
        URL_MD5 b24201da07d3fd87cacc2aa03586aed3
        PATCH_COMMAND
                COMMAND patch -Ns -p1 -i ${MERGED_PATCH_FILE}
        CONFIGURE_COMMAND
                COMMAND meson -Dc_args=-DRTE_ETHDEV_PROFILE_WITH_VTUNE -Ddefault_library=static -Ddisable_drivers=${DPDK_MESON_DISABLED_DRIVERS} -Dprefix=<INSTALL_DIR> -Dmachine=${RTE_MARCH} -Dibverbs_link=dlopen -Dbuildtype=${DPDK_BUILD_TYPE} build
        BUILD_COMMAND  ${CMAKE_COMMAND} -E chdir <SOURCE_DIR>/build ninja 
        INSTALL_COMMAND  
                COMMAND ${CMAKE_COMMAND} -E chdir <SOURCE_DIR>/build ninja install
                COMMAND ${CMAKE_COMMAND} -E chdir <INSTALL_DIR>/lib64 ls -alh
                COMMAND ${CMAKE_COMMAND} -E chdir <INSTALL_DIR>/lib64 sh -c "ar crsT <INSTALL_DIR>/lib64/libdpdkarchive.a <INSTALL_DIR>/lib64/*.a"
        BUILD_IN_SOURCE 1)

ExternalProject_Get_Property(dpdk INSTALL_DIR)
file(MAKE_DIRECTORY ${INSTALL_DIR}/include)

# # set(DPDK_BUILDED FALSE CACHE BOOL "build dpdk only once")
# if(NOT DPDK_BUILDED)
#     message(STATUS "will compile DPDK")
#     set(DPDK_DIR ${CMAKE_CURRENT_BINARY_DIR}/dpdk)
#     set(DPDK_BIN ${DPDK_DIR}/../dpdk-bin)
#     file(MAKE_DIRECTORY ${DPDK_BIN})
#     execute_process(COMMAND tar xf ${CMAKE_CURRENT_SOURCE_DIR}/dpdk/dpdk-21.11.4.tar.xz)
#     execute_process(COMMAND mv ${CMAKE_CURRENT_BINARY_DIR}/dpdk-stable-21.11.4 ${DPDK_DIR})
#     execute_process(COMMAND patch -Ns -p1 -i ${MERGED_PATCH_FILE}
#                     WORKING_DIRECTORY ${DPDK_DIR})
#     execute_process(COMMAND meson -Dc_args=-DRTE_ETHDEV_PROFILE_WITH_VTUNE -Ddefault_library=static -Ddisable_drivers=${DPDK_MESON_DISABLED_DRIVERS} -Dprefix=${DPDK_BIN} -Dmachine=${RTE_MARCH} -Dibverbs_link=dlopen -Dbuildtype=${DPDK_BUILD_TYPE} build
#                     WORKING_DIRECTORY ${DPDK_DIR})
#     execute_process(COMMAND ninja install
#                     WORKING_DIRECTORY ${DPDK_DIR}/build
#                     RESULT_VARIABLE DPDK_BUILD_RESULT)
#     if(result EQUAL 0)
#         message(STATUS "DPDK compiled successfully.")
#     else()
#         message(FATAL_ERROR "DPDK compilation failed.")
#     endif()
#     set(DPDK_BUILDED TRUE CACHE BOOL "build dpdk only once")
# endif()

# set(DPDK_ROOT_DIR ${DPDK_BIN} CACHE STRING "DPDK root path")

find_library(NUMA_LIBRARY NAMES numa)

add_library(libdpdk STATIC IMPORTED GLOBAL)
add_dependencies(libdpdk dpdk)
set_target_properties(libdpdk PROPERTIES
    IMPORTED_LOCATION ${INSTALL_DIR}/lib64/libdpdkarchive.a
    INTERFACE_LINK_DIRECTORIES ${INSTALL_DIR}/lib64
    INTERFACE_INCLUDE_DIRECTORIES ${INSTALL_DIR}/include
    INTERFACE_LINK_LIBRARIES "m;dl;pcap;numa;elf;z"
)

add_executable(${PROJECT_NAME} main.c)
target_link_libraries(${PROJECT_NAME} PRIVATE libdpdk)