dpdk20.11.9 编译arm版本以及在arm 应用中引用dpdk20.11.9

以往19版本的dpdk 都是可以直接用make 的方式进行编译, e.g,

make T=x86_64-native-linux-gcc install

为了和客户那边用的DPDK 版本一致, 这次要用dpdk20.11.9, 并且要把之前跑在X86 版本的服务器上的程序跑在ARM 版本上.

目前有两个问题:

1. 编译出arm 版本的dpdk.

2. 把编译出来的dpdk lib 引用到arm版本的 testArmApp中.

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1. 编译出arm 版本的dpdk.

1). 下载源码:

dpdk.or -> core ->download -> 选择20.11.9 下载:

DPDK

dpdk-20.11.9.tar.xz

2). 从dpdk.org中搜索相关的步骤可以得到以下信息:

4. Cross compiling DPDK for aarch64 and aarch32 — Data Plane Development Kit 23.11.0 documentation

前边的步骤, 官网写得很清楚了, 最后两个步骤的关键步骤说一下:

# 这一步是准备一些编译相关的配置.
meson setup aarch64-build-gcc --cross-file config/arm/arm64_armv8_linux_gcc

# 这里是按之前生成的配置文件正式编译
ninja -C aarch64-build-gcc

3). 以前步骤很快就把dpdk 编译出来了.

4.). 把dpdk 引用到testArmApp 中.

这个时候发现dpdk 20中的makefile变了, "include $(RTE_SDK)/mk/rte.extapp.mk" 这些语句没有了. 加上也会报错. 这行的意思就是初始化一些dpdk的lib 依赖, 以及确定gcc 版本, Ld 版本等.

那么在makefile中就要手动加入Lib的引用了.

开始使用的全是-lrte_eal ... 这种参数来编译的, 也编译成功了. 不过testArmApp在服务器上跑的时候发现.so 文件(动态链接库)找不到.

所以把所有dpdk lib 相关的都改成了 .a的形式, 如下所示:

我们先注意一下51 行这里,有问题, 后边再说.

按以上新的.a 的依赖方式, 发现编译到最后的时候, 始终有两个函数找不到定义:

dpdk-stable-20.11.9/arm64-build-retry2/lib/librte_eal.a(librte_eal_common_eal_common_options.c.o): In function `handle_eal_info_request':

eal_common_options.c:(.text+0x34): undefined reference to `rte_tel_data_start_array'

eal_common_options.c:(.text+0x54): undefined reference to `rte_tel_data_add_array_string'

/data/yubo/dpdk-stable-20.11.9/arm64-build-retry2/lib/librte_eal.a(librte_eal_common_eal_common_options.c.o): In function `eal_save_args':

eal_common_options.c:(.text+0x90c): undefined reference to `rte_telemetry_register_cmd'

eal_common_options.c:(.text+0x924): undefined reference to `rte_telemetry_register_cmd'

/data/yubo/dpdk-stable-20.11.9/arm64-build-retry2/lib/librte_eal.a(librte_eal_linux_eal.c.o): In function `rte_eal_init':

eal.c:(.text+0x1e48): undefined reference to `rte_telemetry_init'

/data/yubo/dpdk-stable-20.11.9/arm64-build-retry2/lib/librte_eal.a(librte_eal_common_eal_common_devargs.c.o): In function `rte_devargs_layers_parse':

eal_common_devargs.c:(.text+0x2e8): undefined reference to `rte_kvargs_parse_delim'

eal_common_devargs.c:(.text+0x34c): undefined reference to `rte_kvargs_free'

再三确认了代码和函数, 用arch -t 查看相关的.a 文件也发现定义的, 但是还是在Link这一步会出问题.

最后才发现. 比如A.a 中调用了B.a 那, 依赖时, A.a 要放到前边, 所以.a的依赖顺序改成以下:

lib 引用没有问题了, 又报了以下问题:

/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_common_eal_common_log.c.o): In function `rte_log_get_stream':
eal_common_log.c:(.text+0x20): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'
/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_common_eal_common_log.c.o): In function `eal_log_set_default':
eal_common_log.c:(.text+0x800): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'
/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_linux_eal_interrupts.c.o): In function `eal_intr_thread_main':
eal_interrupts.c:(.text+0x23c): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'
/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_linux_eal_interrupts.c.o): In function `rte_intr_callback_register':
eal_interrupts.c:(.text+0x8ac): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'
/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_linux_eal_interrupts.c.o): In function `rte_intr_callback_unregister':
eal_interrupts.c:(.text+0xb98): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'
/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_linux_eal_interrupts.c.o): In function `rte_eal_intr_init':
eal_interrupts.c:(.text+0x1684): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'
/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_linux_eal_interrupts.c.o): In function `rte_thread_is_intr':
eal_interrupts.c:(.text.experimental+0x4): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'
/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_linux_eal_interrupts.c.o): In function `rte_intr_callback_unregister_pending':
eal_interrupts.c:(.text.experimental+0x38): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'
/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_linux_eal_memalloc.c.o): In function `huge_sigbus_handler':
eal_memalloc.c:(.text+0x4): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'
/data//dpdk-stable-20.11.9/arm64-build/lib/librte_eal.a(librte_eal_linux_eal_memalloc.c.o): In function `huge_wrap_sigsetjmp':
eal_memalloc.c:(.text+0x1c): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against `.bss'