[PATCH v3 4/7] isar-bootstrap-helper: Add target architecture for dpkg

[Alexander Smirnov <asmirnov@ilbers.de>]

This filesystem intended for cross-compilation, so the target
architecture should be added. Otherwise dpkg won't be able to
install dependencies.

Signed-off-by: Alexander Smirnov <asmirnov@ilbers.de>
---
 meta/classes/isar-bootstrap-helper.bbclass | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/meta/classes/isar-bootstrap-helper.bbclass b/meta/classes/isar-bootstrap-helper.bbclass
index 3faee7c..d45cdd7 100644
--- a/meta/classes/isar-bootstrap-helper.bbclass
+++ b/meta/classes/isar-bootstrap-helper.bbclass
@@ -111,6 +111,11 @@ setup_root_file_system() {
         -o Dir::Etc::sourcelist="sources.list.d/isar-apt.list" \
         -o Dir::Etc::sourceparts="-" \
         -o APT::Get::List-Cleanup="0"
+    # Add multiarch for cross-target
+    if [ "${ROOTFS_ARCH}" != "${DISTRO_ARCH}" ]; then
+        sudo -E chroot "$ROOTFSDIR" /usr/bin/dpkg --add-architecture ${DISTRO_ARCH}
+        sudo -E chroot "$ROOTFSDIR" /usr/bin/apt-get update
+    fi
     sudo -E chroot "$ROOTFSDIR" \
         /usr/bin/apt-get ${APT_ARGS} --download-only $PACKAGES \
             ${IMAGE_TRANSIENT_PACKAGES}
-- 
2.1.4