如何使用cmake编译使用dpdk用C和C ++编写的项目

分类：编程问答

如何解决如何使用cmake编译使用dpdk用C和C ++编写的项目

我正在使用dpdk-stable-19.11.3，并且NIC是Mellaonx Connect5-X。项目的main函数是用C++编写的，但是它调用的所有其他函数都是用C编写的。我使用cmake来管理我的项目。我将所有C代码打包到一个静态库中。没有dpdk，就可以了。添加dpdk后，CMakeLists.txt似乎缺少一些库。它编译成功。但是，当运行可执行文件时，它将返回“打开文件错误”。然后，我添加了库rte_pmd_mlx5和ibverbs。运行命令make时发生错误。

➜  build git:(master) ✗  make
-- Configuring done
-- Generating done
-- Build files have been written to: /home/hewen/demo/build
[ 83%] Built target mylib
[ 91%] Linking CXX executable demo
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dv_open_device':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:830: undefined reference to `mlx5dv_open_device'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_port_query':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:1030: undefined reference to `mlx5dv_query_devx_port'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_qp_query':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:1012: undefined reference to `mlx5dv_devx_qp_query'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_umem_dereg':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:999: undefined reference to `mlx5dv_devx_umem_dereg'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_umem_reg':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:984: undefined reference to `mlx5dv_devx_umem_reg'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_get_async_cmd_comp':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:969: undefined reference to `mlx5dv_devx_get_async_cmd_comp'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_obj_query_async':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:950: undefined reference to `mlx5dv_devx_obj_query_async'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_destroy_cmd_comp':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:937: undefined reference to `mlx5dv_devx_destroy_cmd_comp'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_create_cmd_comp':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:925: undefined reference to `mlx5dv_devx_create_cmd_comp'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_general_cmd':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:910: undefined reference to `mlx5dv_devx_general_cmd'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_obj_modify':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:893: undefined reference to `mlx5dv_devx_obj_modify'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_obj_query':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:876: undefined reference to `mlx5dv_devx_obj_query'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_obj_destroy':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:863: undefined reference to `mlx5dv_devx_obj_destroy'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_devx_obj_create':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:847: undefined reference to `mlx5dv_devx_obj_create'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dv_destroy_flow_matcher':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:815: undefined reference to `mlx5dv_dr_matcher_destroy'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dv_destroy_flow':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:804: undefined reference to `mlx5dv_dr_rule_destroy'

...

/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:517: undefined reference to `mlx5dv_create_wq'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dv_create_cq':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:502: undefined reference to `mlx5dv_create_cq'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dr_destroy_domain':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:489: undefined reference to `mlx5dv_dr_domain_destroy'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dr_create_domain':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:476: undefined reference to `mlx5dv_dr_domain_create'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dr_destroy_flow_tbl':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:463: undefined reference to `mlx5dv_dr_table_destroy'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dr_create_flow_tbl':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:450: undefined reference to `mlx5dv_dr_table_create'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dr_create_flow_action_pop_vlan':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:439: undefined reference to `mlx5dv_dr_action_create_pop_vlan'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dr_create_flow_action_push_vlan':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:426: undefined reference to `mlx5dv_dr_action_create_push_vlan'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dr_create_flow_action_drop':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:414: undefined reference to `mlx5dv_dr_action_create_drop'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dr_create_flow_action_dest_port':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:397: undefined reference to `mlx5dv_dr_action_create_dest_ib_port'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_dr_create_flow_action_dest_flow_tbl':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:385: undefined reference to `mlx5dv_dr_action_create_dest_table'
/home/hewen/dpdk-stable-19.11.3/x86_64-native-linuxapp-gcc/lib/librte_pmd_mlx5.a(mlx5_glue.o): In function `mlx5_glue_destroy_flow_action':
/home/hewen/dpdk-stable-19.11.3/drivers/net/mlx5/mlx5_glue.c:190: undefined reference to `mlx5dv_dr_action_destroy'
collect2: error: ld returned 1 exit status
CMakeFiles/demo.dir/build.make:95: recipe for target 'demo' failed
make[2]: *** [demo] Error 1
CMakeFiles/Makefile2:104: recipe for target 'CMakeFiles/demo.dir/all' failed

我有没有想念的库？这是我的CMakeLists.txt。

cmake_minimum_required(VERSION 3.10)
project(myPJ LANGUAGES C CXX)

find_package(Threads REQUIRED)
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_FLAGS "-msse4.2")
option(DEBUG "add complie options for gdb" ON)

set(RTE_SDK /home/hewen/dpdk-stable-19.11.3)
set(RTE_TARGET x86_64-native-linuxapp-gcc)
include_directories(${RTE_SDK}/${RTE_TARGET}/include)
link_directories(${RTE_SDK}/${RTE_TARGET}/lib)

include_directories(./tools)
link_directories("./tools/")

add_definitions(-pthread)
if(DEBUG)
    add_compile_options(-g -O0)
endif()

add_definitions(-DBUCKET_CLEANER)
add_definitions(-DCOLLECT_STATS -DTABLE_COLLECT_STATS -DLOG_COLLECT_STATS)
add_definitions(-DVERBOSE)

add_library(mylib STATIC a.c b.c c.c d.c)

add_executable(demo main.cpp)
target_link_libraries(demo PRIVATE mylib)
target_link_libraries(demo PRIVATE libxxhash.so)
target_link_libraries(demo PRIVATE Threads::Threads)
target_link_libraries(demo PRIVATE
        -Wl,--whole-archive    
            rte_ethdev
            rte_eal
            rte_mempool
            rte_pmd_mlx5
            ibverbs
            rte_pmd_e1000
            rte_pmd_i40e
            rte_pmd_ixgbe
            rte_pmd_virtio
            rte_pmd_vmxnet3_uio
            rte_hash
            rte_kvargs
            rte_bus_pci
            rte_pci
            rte_bus_vdev
            rte_mbuf
            rte_ring
            rte_net
            pthread
            dl            
            -Wl,--no-whole-archive
            numa
            rt
            pcap
            m
)

解决方法

如果使用自定义Makefile或CMakeLists.txt，则必须确保以下内容

  1. DPDK是使用适当的MXL5 PMD构建的
  2. 对于使用DPDK Makefile，添加到构建路径的库
EXTRA_CFLAGS=-I/path/to/rdma-core/build/include
EXTRA_LDFLAGS=-L/path/to/rdma-core/build/lib
PKG_CONFIG_PATH=/path/to/rdma-core/build/lib/pkgconfig
  1. 交叉检查并验证示例代码l2fwd和skeleton是否有效。

注意：如评论中所述，检查很有用

[EDIT-1]按照注释中的更新，通过将mxl5库包含到CMakeLists.txt中，可以解决此问题。

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