Re: [PATCH 5/9] buildchroot-cross: Initial implementation

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2018-06-13 15:08, Alexander Smirnov wrote:
> Add initial generation of buildchroot for cross-compilation.
> 
> Signed-off-by: Alexander Smirnov <asmirnov@ilbers.de>
> ---
>  meta/conf/isar-bitbake.conf                        |  1 +
>  .../buildchroot/buildchroot-cross.bb               | 53 ++++++++++++++++++++++
>  .../buildchroot/files/build-cross.sh               | 29 ++++++++++++
>  3 files changed, 83 insertions(+)
>  create mode 100644 meta/recipes-devtools/buildchroot/buildchroot-cross.bb
>  create mode 100644 meta/recipes-devtools/buildchroot/files/build-cross.sh
> 
> diff --git a/meta/conf/isar-bitbake.conf b/meta/conf/isar-bitbake.conf
> index ead7798..1412508 100644
> --- a/meta/conf/isar-bitbake.conf
> +++ b/meta/conf/isar-bitbake.conf
> @@ -22,6 +22,7 @@ WORKDIR = "${TMPDIR}/work/${DISTRO}-${DISTRO_ARCH}/${PF}"
>  DL_DIR = "${TOPDIR}/downloads"
>  SSTATE_DIR ?= "${TMPDIR}/sstate-cache"
>  BUILDCHROOT_DIR = "${TMPDIR}/work/${DISTRO}-${DISTRO_ARCH}/buildchroot/rootfs"
> +BUILDCHROOT_CROSS_DIR = "${TMPDIR}/work/${DISTRO}-${DISTRO_ARCH}/buildchroot-cross/rootfs"
>  CACHE = "${TMPDIR}/cache"
>  
>  OVERRIDES_append = ":${DISTRO}:${DISTRO_ARCH}"
> diff --git a/meta/recipes-devtools/buildchroot/buildchroot-cross.bb b/meta/recipes-devtools/buildchroot/buildchroot-cross.bb
> new file mode 100644
> index 0000000..935a626
> --- /dev/null
> +++ b/meta/recipes-devtools/buildchroot/buildchroot-cross.bb
> @@ -0,0 +1,53 @@
> +# Root filesystem for packages cross-building
> +#
> +# This software is a part of ISAR.
> +# Copyright (C) 2015-2016 ilbers GmbH
> +
> +DESCRIPTION = "Isar development cross-filesystem"
> +
> +LICENSE = "gpl-2.0"
> +LIC_FILES_CHKSUM = "file://${LAYERDIR_isar}/licenses/COPYING.GPLv2;md5=751419260aa954499f7abaabaa882bbe"
> +
> +FILESPATH_prepend := "${THISDIR}/files:"
> +SRC_URI = "file://configscript.sh \
> +           file://build-cross.sh"
> +PV = "1.0"
> +
> +inherit isar-bootstrap-helper
> +
> +BUILDCHROOT_CROSS_PREINSTALL ?= "gcc-multilib \
> +                                 make \
> +                                 build-essential \
> +                                 debhelper \
> +                                 autotools-dev \
> +                                 dpkg \
> +                                 locales \
> +                                 docbook-to-man \
> +                                 apt \
> +                                 automake \
> +                                 devscripts \
> +                                 equivs"
> +
> +# TODO: make this inclusion depending on the target arch
> +BUILDCHROOT_CROSS_PREINSTALL += "binutils"
> +
> +WORKDIR = "${TMPDIR}/work/${DISTRO}-${DISTRO_ARCH}/${PN}"
> +
> +do_build[stamp-extra-info] = "${DISTRO}-${DISTRO_ARCH}"
> +do_build[root_cleandirs] = "${BUILDCHROOT_CROSS_DIR} \
> +                            ${BUILDCHROOT_CROSS_DIR}/isar-apt \
> +                            ${BUILDCHROOT_CROSS_DIR}/downloads \
> +                            ${BUILDCHROOT_CROSS_DIR}/home/builder"
> +do_build[depends] = "isar-apt:do_cache_config isar-bootstrap-host:do_deploy"
> +
> +do_build() {
> +    setup_root_file_system --host-arch "${BUILDCHROOT_CROSS_DIR}" ${BUILDCHROOT_CROSS_PREINSTALL}
> +
> +    # Install package builder script
> +    sudo chmod -R a+rw "${BUILDCHROOT_CROSS_DIR}/home/builder"
> +    sudo install -m 755 ${WORKDIR}/build-cross.sh ${BUILDCHROOT_CROSS_DIR}/build.sh
> +
> +    # Configure root filesystem
> +    sudo install -m 755 ${WORKDIR}/configscript.sh ${BUILDCHROOT_CROSS_DIR}
> +    sudo chroot ${BUILDCHROOT_CROSS_DIR} /configscript.sh
> +}
> diff --git a/meta/recipes-devtools/buildchroot/files/build-cross.sh b/meta/recipes-devtools/buildchroot/files/build-cross.sh
> new file mode 100644
> index 0000000..8c3ddaf
> --- /dev/null
> +++ b/meta/recipes-devtools/buildchroot/files/build-cross.sh
> @@ -0,0 +1,29 @@
> +#!/bin/bash
> +#
> +# This software is a part of ISAR.
> +# Copyright (C) 2015-2017 ilbers GmbH
> +# Copyright (c) 2018 Siemens AG
> +
> +set -e
> +
> +# Go to build directory
> +cd $1
> +
> +# Add target architecture
> +dpkg --add-architecture $2
> +
> +# To avoid Perl locale warnings:
> +export LC_ALL=C
> +export LANG=C
> +export LANGUAGE=C
> +
> +# If autotools files have been created, update their timestamp to
> +# prevent them from being regenerated
> +for i in configure aclocal.m4 Makefile.am Makefile.in; do
> +    if [ -f "${i}" ]; then
> +        touch "${i}"
> +    fi
> +done
> +
> +# Build the package
> +dpkg-buildpackage -a$2
> 

This build-cross.sh doesn't install any of the build dependencies the
target package lists. How do they come in? Or is this a limitation of
this version? For the kernel cross-build, I'm currently trying to
translate the what is needed for a corresponding build-kernel-cross.sh.

Those packages would go into the cross-buildchroot, or are we also using
the native buildchroot here?

Jan

-- 
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