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SPEC2000 on ARC

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Alexey Brodkin edited this page Aug 8, 2018 · 23 revisions

Prerequisites

Prepare Buildroot for building SD-card image:

Accommodate pre-built native tools configuration specifics

As of today pre-built native toolchain for ARC HS is built against uClibc with configuration that differs from Buildroot. It has enabled UCLIBC_HAS_LOCALE and disabled UCLIBC_HAS_XLOCALE while Buildroot enables both options in uClibc if user wants to have support of locales on target.

With vanilla Buildroot user will see a message about inability to resolve __ctype_b on running gcc on target. So we'll satisfy native tools requiremens with that simple change in Buildroot sources:

diff --git a/package/uclibc/uclibc.mk b/package/uclibc/uclibc.mk
index 7de9219873..da2605cb24 100644
--- a/package/uclibc/uclibc.mk
+++ b/package/uclibc/uclibc.mk
@@ -338,7 +338,6 @@ define UCLIBC_LOCALE_CONFIG
        $(call KCONFIG_SET_OPT,UCLIBC_BUILD_MINIMAL_LOCALES,"$(UCLIBC_LOCALES)",$(@D)/.config)
        $(call KCONFIG_DISABLE_OPT,UCLIBC_PREGENERATED_LOCALE_DATA,$(@D)/.config)
        $(call KCONFIG_DISABLE_OPT,DOWNLOAD_PREGENERATED_LOCALE_DATA,$(@D)/.config)
-       $(call KCONFIG_ENABLE_OPT,UCLIBC_HAS_XLOCALE,$(@D)/.config)
        $(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_GLIBC_DIGIT_GROUPING,$(@D)/.config)
 endef
 else

Configure and build SD-card image with Buildroot

Use the most recent Buildroot release and the following defconfig:

BR2_arcle=y
BR2_archs38=y
BR2_KERNEL_HEADERS_4_16=y
BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
BR2_PTHREAD_DEBUG=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_TARGET_GENERIC_HOSTNAME="hsdk"
BR2_TARGET_GENERIC_ISSUE="Welcome to the HSDK Platform"
BR2_SYSTEM_DHCP="eth0"
BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/synopsys/hsdk/genimage.cfg"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17.13"
BR2_LINUX_KERNEL_DEFCONFIG="hsdk"
BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/synopsys/hsdk/linux.fragment"
BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
BR2_PACKAGE_STRACE=y
BR2_PACKAGE_NTP=y
BR2_PACKAGE_NTP_NTPDATE=y
BR2_PACKAGE_OPENSSH=y
BR2_PACKAGE_RSYNC=y
BR2_PACKAGE_COREUTILS=y
BR2_PACKAGE_HTOP=y
BR2_TARGET_ROOTFS_EXT2=y
BR2_TARGET_ROOTFS_EXT2_4=y
# BR2_TARGET_ROOTFS_TAR is not set
BR2_TARGET_UBOOT=y
BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
BR2_TARGET_UBOOT_CUSTOM_VERSION=y
BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2018.07"
BR2_TARGET_UBOOT_BOARD_DEFCONFIG="hsdk"
BR2_TARGET_UBOOT_NEEDS_DTC=y
BR2_TARGET_UBOOT_FORMAT_ELF=y
BR2_TARGET_UBOOT_ENVIMAGE=y
BR2_TARGET_UBOOT_ENVIMAGE_SOURCE="board/synopsys/hsdk/uboot.env.txt"
BR2_TARGET_UBOOT_ENVIMAGE_SIZE="0x4000"
BR2_PACKAGE_HOST_DOSFSTOOLS=y
BR2_PACKAGE_HOST_GENIMAGE=y
BR2_PACKAGE_HOST_MTOOLS=y

Deploy resulting sdcard.img on SD-card

Actions on target

  1. Make native tools available for a target, i.e. copy it over to target's /opt

  2. Create a smlink from native GCC to CC (Perl configuration scripts looks strictly for cc):

    cd /opt/arc_gnu_2018.03_prebuilt_uclibc_le_archs_native_install/bin/
ln -s gcc cc

  3. Perl's Errno module tries to find errno.h only in /usr/include or /usr/local/include (see https://perl5.git.perl.org/perl.git/blob/HEAD:/ext/Errno/Errno_pm.PL), satisfy this requirement with symlink this way:

    ln -s /opt/arc_gnu_2018.03_prebuilt_uclibc_le_archs_native_install/ /usr/local

  4. Build SPEC tools:

    cd tools/src
./buildtools

  5. Run SPEC. This will first build benchmarks an then execute them:

    . ./shrc
runspec --config linux-arc-gcc.cfg --reportable int

    Note Busybox has no source applet so we use . instead.

  6. Rerun SPEC keeping eveything built

    runspec --config linux-arc-gcc.cfg --reportable int --make_no_clobber

    Otherwise all previously produced binaries will be nuked and we'll start over from scratch.

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