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Subject: Re: [PATCH v2 05/12] buildchroot-cross: Initial implementation
To: Alexander Smirnov <asmirnov@ilbers.de>, isar-users@googlegroups.com
References: <20180628082810.3571-1-asmirnov@ilbers.de>
 <20180628082810.3571-6-asmirnov@ilbers.de>
 <26683869-a5e4-f5e6-f0d0-afdddd3ff36a@web.de>
 <7113034c-bf3e-a210-e070-b39d8115a576@ilbers.de>
From: Jan Kiszka <jan.kiszka@web.de>
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Message-ID: <fa93604e-7c38-5b10-b8a3-b35b203d6be5@web.de>
Date: Wed, 4 Jul 2018 22:05:53 +0200
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From: Jan Kiszka <jan.kiszka@web.de>
To: Alexander Smirnov <asmirnov@ilbers.de>, isar-users@googlegroups.com
Message-ID: <fa93604e-7c38-5b10-b8a3-b35b203d6be5@web.de>
Subject: Re: [PATCH v2 05/12] buildchroot-cross: Initial implementation
References: <20180628082810.3571-1-asmirnov@ilbers.de>
 <20180628082810.3571-6-asmirnov@ilbers.de>
 <26683869-a5e4-f5e6-f0d0-afdddd3ff36a@web.de>
 <7113034c-bf3e-a210-e070-b39d8115a576@ilbers.de>
In-Reply-To: <7113034c-bf3e-a210-e070-b39d8115a576@ilbers.de>

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On 2018-07-04 21:56, Alexander Smirnov wrote:
>=20
> On 06/29/2018 08:36 PM, Jan Kiszka wrote:
>> On 2018-06-28 10:28, Alexander Smirnov wrote:
>>> Add initial generation of buildchroot for cross-compilation.
>>>
>>> Signed-off-by: Alexander Smirnov <asmirnov@ilbers.de>
>>> ---
>>> =C2=A0 meta/classes/isar-bootstrap-helper.bbclass=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0 5 ++
>>> =C2=A0 meta/conf/isar-bitbake.conf=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0 1 +
>>> =C2=A0 .../buildchroot/buildchroot-cross.bb=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | 57
>>> ++++++++++++++++++++++
>>> =C2=A0 3 files changed, 63 insertions(+)
>>> =C2=A0 create mode 100644
>>> meta/recipes-devtools/buildchroot/buildchroot-cross.bb
>>>
>>> diff --git a/meta/classes/isar-bootstrap-helper.bbclass
>>> b/meta/classes/isar-bootstrap-helper.bbclass
>>> index d4f8d9a..a3ef19d 100644
>>> --- a/meta/classes/isar-bootstrap-helper.bbclass
>>> +++ b/meta/classes/isar-bootstrap-helper.bbclass
>>> @@ -70,6 +70,11 @@ setup_root_file_system() {
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 -o Dir::Etc::s=
ourcelist=3D"sources.list.d/isar-apt.list" \
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 -o Dir::Etc::s=
ourceparts=3D"-" \
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 -o APT::Get::L=
ist-Cleanup=3D"0"
>>> +=C2=A0=C2=A0=C2=A0 # Add multiarch for cross-target
>>> +=C2=A0=C2=A0=C2=A0 if [ "${ROOTFS_ARCH}" !=3D "${DISTRO_ARCH}" ]; th=
en
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 sudo -E chroot "$ROOTFSDI=
R" /usr/bin/dpkg --add-architecture
>>> ${DISTRO_ARCH}
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 sudo -E chroot "$ROOTFSDI=
R" /usr/bin/apt-get update
>>> +=C2=A0=C2=A0=C2=A0 fi
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 sudo -E chroot "$ROOTFSDIR" \
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 /usr/bin/apt-g=
et ${APT_ARGS} --download-only $PACKAGES \
>>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 ${IMAGE_TRANSIENT_PACKAGES}
>>> diff --git a/meta/conf/isar-bitbake.conf b/meta/conf/isar-bitbake.con=
f
>>> index ead7798..1412508 100644
>>> --- a/meta/conf/isar-bitbake.conf
>>> +++ b/meta/conf/isar-bitbake.conf
>>> @@ -22,6 +22,7 @@ WORKDIR =3D
>>> "${TMPDIR}/work/${DISTRO}-${DISTRO_ARCH}/${PF}"
>>> =C2=A0 DL_DIR =3D "${TOPDIR}/downloads"
>>> =C2=A0 SSTATE_DIR ?=3D "${TMPDIR}/sstate-cache"
>>> =C2=A0 BUILDCHROOT_DIR =3D
>>> "${TMPDIR}/work/${DISTRO}-${DISTRO_ARCH}/buildchroot/rootfs"
>>> +BUILDCHROOT_CROSS_DIR =3D
>>> "${TMPDIR}/work/${DISTRO}-${DISTRO_ARCH}/buildchroot-cross/rootfs"
>>> =C2=A0 CACHE =3D "${TMPDIR}/cache"
>>> =C2=A0 =C2=A0 OVERRIDES_append =3D ":${DISTRO}:${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..bc0bc66
>>> --- /dev/null
>>> +++ b/meta/recipes-devtools/buildchroot/buildchroot-cross.bb
>>> @@ -0,0 +1,57 @@
>>> +# Root filesystem for packages cross-building
>>> +#
>>> +# This software is a part of ISAR.
>>> +# Copyright (C) 2015-2016 ilbers GmbH
>>> +
>>> +DESCRIPTION =3D "Isar development cross-filesystem"
>>> +
>>> +LICENSE =3D "gpl-2.0"
>>> +LIC_FILES_CHKSUM =3D
>>> "file://${LAYERDIR_isar}/licenses/COPYING.GPLv2;md5=3D751419260aa9544=
99f7abaabaa882bbe"
>>>
>>> +
>>> +FILESPATH_prepend :=3D "${THISDIR}/files:"
>>> +SRC_URI =3D "file://configscript.sh \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 file://=
build.sh"
>>> +PV =3D "1.0"
>>> +
>>> +inherit isar-bootstrap-helper
>>> +
>>> +BUILDCHROOT_CROSS_PREINSTALL ?=3D "make \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 debhelper \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 autotools-dev \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 dpkg \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 locales \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 docbook-to-man \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 apt \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 automake \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 devscripts \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 equivs \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 libc6:${DISTRO_ARCH}"
>>> +
>>> +# Please note: this works for Stretch distro only. According to the
>>> wiki page:
>>> +#=C2=A0=C2=A0=C2=A0=C2=A0 https://wiki.debian.org/CrossToolchains
>>> +# Jessie doesn't contain toolchain. It should be fetched from the
>>> external
>>> +# repository:
>>> +#=C2=A0=C2=A0=C2=A0=C2=A0 http://emdebian.org/tools/debian/
>>> +BUILDCHROOT_CROSS_PREINSTALL_append_armhf +=3D
>>> "binutils-arm-linux-gnueabihf \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
>>> crossbuild-essential-armhf"
>>> +
>>> +WORKDIR =3D "${TMPDIR}/work/${DISTRO}-${DISTRO_ARCH}/${PN}"
>>> +
>>> +do_build[stamp-extra-info] =3D "${DISTRO}-${DISTRO_ARCH}"
>>> +do_build[root_cleandirs] =3D "${BUILDCHROOT_CROSS_DIR} \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 ${BUILDCHROOT_CROSS_DIR}/isar-apt \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 ${BUILDCHROOT_CROSS_DIR}/downloads \
>>> +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 ${BUILDCHROOT_CROSS_DIR}/home/builder"
>>> +do_build[depends] =3D "isar-apt:do_cache_config
>>> isar-bootstrap-host:do_deploy"
>>> +
>>> +do_build() {
>>> +=C2=A0=C2=A0=C2=A0 setup_root_file_system --host-arch "${BUILDCHROOT=
_CROSS_DIR}"
>>> ${BUILDCHROOT_CROSS_PREINSTALL}
>>> +
>>> +=C2=A0=C2=A0=C2=A0 # Install package builder script
>>> +=C2=A0=C2=A0=C2=A0 sudo chmod -R a+rw "${BUILDCHROOT_CROSS_DIR}/home=
/builder"
>>> +=C2=A0=C2=A0=C2=A0 sudo install -m 755 ${WORKDIR}/build.sh
>>> ${BUILDCHROOT_CROSS_DIR}/build.sh
>>> +
>>> +=C2=A0=C2=A0=C2=A0 # Configure root filesystem
>>> +=C2=A0=C2=A0=C2=A0 sudo install -m 755 ${WORKDIR}/configscript.sh
>>> ${BUILDCHROOT_CROSS_DIR}
>>> +=C2=A0=C2=A0=C2=A0 sudo chroot ${BUILDCHROOT_CROSS_DIR} /configscrip=
t.sh
>>> +}
>>>
>>
>> This is almost identical to buildchroot:do_build - except for one
>> differently named variable, the first line, and missing fix
>> 39e0c488d8b2. Please avoid those duplications.
>>
>=20
> Sorry, didn't get this. It's absolutely different logical units:

No, the code is identical. Step back, look at it again.

> =C2=A0- crossbuildchroot has its own lifecycle including stamps, so it =
could
> not be shared with the original buildchroot (only via common include)
> =C2=A0- crossbuildchroot and buildchroot have different default package=
s to
> install and they are incompatible due to possibly different
> architectures (cross has always host one, bchroot has target one).
>=20
> Could you please clarify what you mean here?

I'm not suggesting to have only a single recipe. I'm asking to pull out
identical code into a shared function, class, whatever so that we can
maintain identical logic in one place (and fix bugs only once).

Jan


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