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

[Alexander Smirnov <asmirnov@ilbers.de>]

On Thu, Jun 14, 2018 at 05:55:48PM +0200, Jan Kiszka wrote:
> 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.
> 

That's exactly the limitation of this series about which I mentioned in
the cover letter. Attempt to install them in similar way like for
'build.sh' failed, due to it tries to replace native packages like:
build-essentials, binutils by foreign ones :-(. Henning already proposed
to try to play with mk-build-deps params, so I'm going to do this.

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

buildchroot and buildchroot-cross has nothing common except isar-apt
repository.

Alex

> 
> Jan
> 
> -- 
> Siemens AG, Corporate Technology, CT RDA IOT SES-DE
> Corporate Competence Center Embedded Linux