1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright(c) 2018 ARM Corporation.
4 Cross compile DPDK for ARM64
5 ============================
6 This chapter describes how to cross compile DPDK for ARM64 from x86 build hosts.
10 Whilst it is recommended to natively build DPDK on ARM64 (just
11 like with x86), it is also possible to cross-build DPDK for ARM64. An
12 ARM64 cross compile GNU toolchain is used for this.
14 Obtain the cross tool chain
15 ---------------------------
16 The latest cross compile tool chain can be downloaded from:
17 https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads.
19 It is always recommended to check and get the latest compiler tool from the page and use
20 it to generate better code. As of this writing 8.3-2019.03 is the newest, the following
21 description is an example of this version.
23 .. code-block:: console
25 wget https://developer.arm.com/-/media/Files/downloads/gnu-a/8.3-2019.03/binrel/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz
27 Unzip and add into the PATH
28 ---------------------------
30 .. code-block:: console
32 tar -xvf gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz
33 export PATH=$PATH:<cross_install_dir>/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu/bin
37 For the host requirements and other info, refer to the release note section: https://releases.linaro.org/components/toolchain/binaries/
39 .. _arm_cross_build_getting_the_prerequisite_library:
41 Getting the prerequisite library
42 --------------------------------
44 NUMA is required by most modern machines, not needed for non-NUMA architectures.
48 For compiling the NUMA lib, run libtool --version to ensure the libtool version >= 2.2,
49 otherwise the compilation will fail with errors.
51 .. code-block:: console
53 git clone https://github.com/numactl/numactl.git
55 git checkout v2.0.13 -b v2.0.13
58 ./configure --host=aarch64-linux-gnu CC=aarch64-linux-gnu-gcc --prefix=<numa install dir>
61 The numa header files and lib file is generated in the include and lib folder respectively under <numa install dir>.
63 .. _augment_the_cross_toolchain_with_numa_support:
65 Augment the cross toolchain with NUMA support
66 ---------------------------------------------
70 This way is optional, an alternative is to use extra CFLAGS and LDFLAGS, depicted in :ref:`configure_and_cross_compile_dpdk_build` below.
72 Copy the NUMA header files and lib to the cross compiler's directories:
74 .. code-block:: console
76 cp <numa_install_dir>/include/numa*.h <cross_install_dir>/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu/aarch64-linux-gnu/libc/usr/include/
77 cp <numa_install_dir>/lib/libnuma.a <cross_install_dir>/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu/lib/gcc/aarch64-linux-gnu/8.3.0/
78 cp <numa_install_dir>/lib/libnuma.so <cross_install_dir>/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu/lib/gcc/aarch64-linux-gnu/8.3.0/
80 .. _configure_and_cross_compile_dpdk_build:
82 Cross Compiling DPDK using Meson
83 --------------------------------
85 To cross-compile DPDK on a desired target machine we can use the following
88 meson cross-build --cross-file <target_machine_configuration>
91 For example if the target machine is arm64 we can use the following
94 meson arm64-build --cross-file config/arm/arm64_armv8_linux_gcc
97 Configure and Cross Compile DPDK using Make
98 -------------------------------------------
99 To configure a build, choose one of the target configurations, like arm64-dpaa-linux-gcc and arm64-thunderx-linux-gcc.
101 .. code-block:: console
103 make config T=arm64-armv8a-linux-gcc
105 To cross-compile, without compiling the kernel modules, use the following command:
107 .. code-block:: console
109 make -j CROSS=aarch64-linux-gnu- CONFIG_RTE_KNI_KMOD=n CONFIG_RTE_EAL_IGB_UIO=n
111 To cross-compile, including the kernel modules, the kernel source tree needs to be specified by setting
114 .. code-block:: console
116 make -j CROSS=aarch64-linux-gnu- RTE_KERNELDIR=<kernel_src_rootdir> CROSS_COMPILE=aarch64-linux-gnu-
118 To compile for non-NUMA targets, without compiling the kernel modules, use the following command:
120 .. code-block:: console
122 make -j CROSS=aarch64-linux-gnu- CONFIG_RTE_KNI_KMOD=n CONFIG_RTE_EAL_IGB_UIO=n CONFIG_RTE_LIBRTE_VHOST_NUMA=n CONFIG_RTE_EAL_NUMA_AWARE_HUGEPAGES=n
126 1. EXTRA_CFLAGS and EXTRA_LDFLAGS should be added to include the NUMA headers and link the library respectively,
127 if the above step :ref:`augment_the_cross_toolchain_with_numa_support` was skipped therefore the toolchain was not
128 augmented with NUMA support.
130 2. "-isystem <numa_install_dir>/include" should be add to EXTRA_CFLAGS, otherwise the numa.h file will get a lot of compiling
131 errors of Werror=cast-qual, Werror=strict-prototypes and Werror=old-style-definition.
133 An example is given below:
135 .. code-block:: console
137 make -j CROSS=aarch64-linux-gnu- CONFIG_RTE_KNI_KMOD=n CONFIG_RTE_EAL_IGB_UIO=n EXTRA_CFLAGS="-isystem <numa_install_dir>/include" EXTRA_LDFLAGS="-L<numa_install_dir>/lib -lnuma"