dpdk 库链接问题答案

【问题标题】：dpdk library Linking issuedpdk 库链接问题
【发布时间】：2021-07-30 08:05:11
【问题描述】：

使用Meson，Ninja默认安装dpdk会提供libdpdk.pc。请在Cmakefile dpdk 20.11.2版本中提供链接dpdk库的建议。

cmake

    Checking for libdpdk
    Found libdpdk,version 20.11.2

制作错误信息：

In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/x86intrin.h:37:0,
from /usr/local/include/rte_vect.h:31,
from /usr/local/include/rte_memcpy.h:17,
from /home/sample.c:88,

/usr/lib/gcc/x86_64-linux-gnu/5/include/tmmintrin.h:185:1: 错误：调用 always_inline ‘_mm_alignr_epi8’时内联失败：目标特定选项不匹配

libdpdk.pc

prefix=/usr/local
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name:DPDK
Requires:libdpdk-libs
Cflags:-I{includedir}

CMakeLists.txt

    find_package(PkgConfig REQUIRED)
    pkg_check_modules(DPDK REQUIRED libdpdk)
    include_directories(${DPDK_INCLUDE_DIR})
    include_directories(${CMAKE_SOURCE_DIR}/include)
    link_directories(${DPDK_LIBRARY_DIR})
set(DPDK_LIBS "-Wl,--whole-archive -l dpdk -Wl,--no-whole-archive")

    add_executable(sample sample.c)
   # target_include_directories(sample PUBLIC /usr/local/include)
    #target_include_directories(sample PUBLIC /usr/local/lib/x86_64-linux-gnu)
    target_link_libraries(sample PUBLIC ${DPDK_LIBS})

【问题讨论】：

标签： dpdk

【解决方案1】：

你应该使用

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mssse3")

在CMakeLists.txt.

【讨论】：

感谢您的解决方案。我可以通过将 CMAKE_CXX_FLAGS 设置为 msse4.2 来解决它。
将 CMAKE_C_FLAGS 设置为 -mssse3 会产生相同的错误。将 CMAKE_CXX_FLAGS 设置为 msse4.2 解决了这个问题。