From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from foss.arm.com (usa-sjc-mx-foss1.foss.arm.com [217.140.101.70]) by dpdk.org (Postfix) with ESMTP id E7A4537A2 for ; Tue, 29 May 2018 08:51:18 +0200 (CEST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 456FC1596; Mon, 28 May 2018 23:51:18 -0700 (PDT) Received: from net-debian.shanghai.arm.com (unknown [10.169.36.53]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C3C6B3F53D; Mon, 28 May 2018 23:51:17 -0700 (PDT) From: Gavin Hu To: dev@dpdk.org Cc: gavin.hu@arm.com Date: Tue, 29 May 2018 14:51:07 +0800 Message-Id: <1527576667-26415-2-git-send-email-gavin.hu@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1527576667-26415-1-git-send-email-gavin.hu@arm.com> References: <1527490428-15540-1-git-send-email-gavin.hu@arm.com> <1527576667-26415-1-git-send-email-gavin.hu@arm.com> Subject: [dpdk-dev] [PATCH v3 2/2] doc: add a guide doc for cross compiling from x86 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 May 2018 06:51:19 -0000 This is the guide for cross compiling ARM64 DPDK from X86 hosts. Signed-off-by: Gavin Hu Reviewed-by: Steve Capper Reviewed-by: Honnappa Nagarahalli Reviewed-by: Marko Kovacevic Reviewed-by: Jerin Jacob Reviewed-by: Thomas Monjalon Reviewed-by: Bruce Richardson --- .../linux_gsg/cross_build_dpdk_for_arm64.rst | 125 +++++++++++++++++++++ doc/guides/linux_gsg/index.rst | 1 + 2 files changed, 126 insertions(+) create mode 100644 doc/guides/linux_gsg/cross_build_dpdk_for_arm64.rst diff --git a/doc/guides/linux_gsg/cross_build_dpdk_for_arm64.rst b/doc/guides/linux_gsg/cross_build_dpdk_for_arm64.rst new file mode 100644 index 0000000..b603f6e --- /dev/null +++ b/doc/guides/linux_gsg/cross_build_dpdk_for_arm64.rst @@ -0,0 +1,125 @@ +.. SPDX-License-Identifier: BSD-3-Clause + Copyright(c) 2018 ARM Corporation. + +Cross compile DPDK for ARM64 +============================ +This chapter describes how to cross compile DPDK for ARM64 from x86 build hosts. + +.. note:: + + Whilst it is recommended to natively build DPDK on ARM64 (just + like with x86), it is also possible to cross-build DPDK for ARM64. An + ARM64 cross compile GNU toolchain is used for this. + +Obtain the cross tool chain +--------------------------- +The latest cross compile tool chain can be downloaded from: +https://releases.linaro.org/components/toolchain/binaries/latest/aarch64-linux-gnu/. +Following is the step to get the version 7.2.1, latest in this writting. + +.. code-block:: console + + wget https://releases.linaro.org/components/toolchain/binaries/latest/ + aarch64-linux-gnu/gcc-linaro-7.2.1-2017.11-x86_64_aarch64-linux-gnu.tar.xz + +Unzip and add into the PATH +--------------------------- + +.. code-block:: console + + tar -xvf gcc-linaro-7.2.1-2017.11-x86_64_aarch64-linux-gnu.tar.xz + export PATH=$PATH:/gcc-linaro-7.2.1-2017.11-x86_64 + _aarch64-linux-gnu/bin + +.. note:: + + For the host requirements and other info, refer to the release note section: + https://releases.linaro.org/components/toolchain/binaries/latest/ + +Getting the prerequisite library +-------------------------------- + +NUMA is required by most modern machines, not needed for non-NUMA archtectures. + +.. note:: + + For compiling the NUMA lib, run libtool --version to ensure the libtool version >= 2.2, + otherwise the compilation will fail with errors. + +.. code-block:: console + + git clone https://github.com/numactl/numactl.git + cd numactl + git checkout v2.0.11 -b v2.0.11 + ./autogen.sh + autoconf -i + ./configure --host=x86_64 CC=aarch64-linux-gnu-gcc prefix= + make install + +The numa header files and lib file is generated in the include and lib folder respectively under . + +.. _augument_the_cross_toolcain_with_numa_support: + +Augument the cross toolchain with NUMA support +---------------------------------------------- + +.. note:: + + This way is optional, an alternative is to use extra CFLAGS and LDFLAGS, depicted in :ref:`configure_and_cross_compile_dpdk_build` below. + +Copy the NUMA header files to the cross compiler's include directory: + +.. code-block:: console + + cp /include/numa*.h /gcc-linaro-7.2.1-2017.11 + -x86_64_aarch64-linux-gnu/bin/../aarch64-linux-gnu/libc/usr/include/ + cp /lib/libnuma.a /gcc-linaro-7.2.1-2017.11 + -x86_64_aarch64-linux-gnu/lib/gcc/aarch64-linux-gnu/7.2.1/ + +.. _configure_and_cross_compile_dpdk_build: + +Configure and cross compile DPDK Build +-------------------------------------- +To configure a build, choose one of the target configurations, like arm64-dpaa2-linuxapp-gcc and arm64-thunderx-linuxapp-gcc. + +.. code-block:: console + + make config T=arm64-armv8a-linuxapp-gcc + +To cross-compile, without compiling the kernel modules, use the following command: + +.. code-block:: console + + make -j CROSS=aarch64-linux-gnu- CONFIG_RTE_KNI_KMOD=n CONFIG_RTE_EAL_IGB_UIO=n + +To cross-compile, including the kernel modules, the kernel source tree needs to be specified by setting +RTE_KERNELDIR: + +.. code-block:: console + + make -j CROSS=aarch64-linux-gnu- RTE_KERNELDIR= + CROSS_COMPILE=aarch64-linux-gnu- + +To compile for non-NUMA targets, without compiling the kernel modules, use the following command: + +.. code-block:: console + + 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 + +.. note:: + + 1. EXTRA_CFLAGS and EXTRA_LDFLAGS should be added to include the NUMA headers and link the library respectively, + if the step :ref:`augument_the_cross_toolcain_with_numa_support` was skipped therefore the toolchain was not + augumented with NUMA support. + + 2. RTE_DEVEL_BUILD has to be disabled, otherwise the numa.h file gets + a lot of compiling errors of Werror=cast-qual, Werror=strict-prototypes and Werror=old-style-definition. + An example is given below: + + .. code-block:: console + + make -j CROSS=aarch64-linux-gnu- CONFIG_RTE_KNI_KMOD=n CONFIG_RTE_EAL_IGB_UIO=n + RTE_DEVEL_BUILD=n EXTRA_CFLAGS="-I/include" EXTRA_LDFLAGS= + "-L/lib -lnuma" + diff --git a/doc/guides/linux_gsg/index.rst b/doc/guides/linux_gsg/index.rst index 2a7bdfe..077f930 100644 --- a/doc/guides/linux_gsg/index.rst +++ b/doc/guides/linux_gsg/index.rst @@ -13,6 +13,7 @@ Getting Started Guide for Linux intro sys_reqs build_dpdk + cross_build_dpdk_for_arm64 linux_drivers build_sample_apps enable_func -- 2.1.4