[PATCH 4/8] Add Debian arm64 support to the core

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

From: Jan Kiszka <jan.kiszka@siemens.com>

Required changes for the meta layer to build arm64 targets.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 meta/recipes-devtools/buildchroot/files/setup.sh      | 18 ++++++++++++++----
 meta/recipes-devtools/isar-apt/files/distributions.in |  2 +-
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/meta/recipes-devtools/buildchroot/files/setup.sh b/meta/recipes-devtools/buildchroot/files/setup.sh
index 21c004e..1257739 100755
--- a/meta/recipes-devtools/buildchroot/files/setup.sh
+++ b/meta/recipes-devtools/buildchroot/files/setup.sh
@@ -14,6 +14,7 @@ set -e
 # setup.sh needs to be executable.
 
 TARGET=$1
+ARCH=$2
 
 # Prevent daemons from starting in buildchroot
 if [ -x "$TARGET/sbin/start-stop-daemon" ]; then
@@ -54,11 +55,20 @@ EOF
     chmod a+x $TARGET/usr/sbin/policy-rc.d
 fi
 
-# Install QEMU emulator to execute ARM binaries
-if [ ! -x /usr/bin/qemu-arm-static ]; then
-    echo "qemu-arm-static binary not present, unable to execute ARM binaries"
+case $ARCH in
+    armel|armhf)
+        qemu_arch=arm
+        ;;
+    arm64)
+        qemu_arch=aarch64
+        ;;
+esac
+
+# Install QEMU emulator to execute foreign binaries
+if [ ! -x /usr/bin/qemu-${qemu_arch}-static ]; then
+    echo "qemu-${qemu_arch}-static binary not present, unable to execute target binaries"
 else
-    sudo cp /usr/bin/qemu-arm-static ${TARGET}/usr/bin
+    sudo cp /usr/bin/qemu-${qemu_arch}-static ${TARGET}/usr/bin
 fi
 
 # Set hostname
diff --git a/meta/recipes-devtools/isar-apt/files/distributions.in b/meta/recipes-devtools/isar-apt/files/distributions.in
index cd214c6..cc82c57 100644
--- a/meta/recipes-devtools/isar-apt/files/distributions.in
+++ b/meta/recipes-devtools/isar-apt/files/distributions.in
@@ -1,3 +1,3 @@
 Codename: {DISTRO_NAME}
-Architectures: i386 armhf amd64 source
+Architectures: i386 armhf arm64 amd64 source
 Components: main
-- 
2.13.6