[PATCH v4 06/10] isar: Add ARM64 cross-compilation support

[Alexander Smirnov <asmirnov@ilbers.de>]

Add possibility to cross-compile ARM64 target.

Signed-off-by: Alexander Smirnov <asmirnov@ilbers.de>
---
 meta/recipes-devtools/buildchroot/buildchroot-host.bb | 3 +++
 meta/recipes-kernel/linux/files/build-kernel.sh       | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/meta/recipes-devtools/buildchroot/buildchroot-host.bb b/meta/recipes-devtools/buildchroot/buildchroot-host.bb
index 048998d..7bdd7e0 100644
--- a/meta/recipes-devtools/buildchroot/buildchroot-host.bb
+++ b/meta/recipes-devtools/buildchroot/buildchroot-host.bb
@@ -26,6 +26,9 @@ BUILDCHROOT_PREINSTALL ?= "make \
 #     http://emdebian.org/tools/debian/
 BUILDCHROOT_PREINSTALL_append_armhf += "binutils-arm-linux-gnueabihf \
                                         crossbuild-essential-armhf"
+BUILDCHROOT_PREINSTALL_append_arm64 += "binutils-aarch64-linux-gnu \
+                                        crossbuild-essential-arm64"
+ 
 
 PARAMS = "--host-arch"
 do_build[depends] = "isar-apt:do_cache_config isar-bootstrap-host:do_bootstrap"
diff --git a/meta/recipes-kernel/linux/files/build-kernel.sh b/meta/recipes-kernel/linux/files/build-kernel.sh
index cc137a8..8b58e93 100644
--- a/meta/recipes-kernel/linux/files/build-kernel.sh
+++ b/meta/recipes-kernel/linux/files/build-kernel.sh
@@ -18,6 +18,10 @@ if [ "$host_arch" != "$target_arch" ]; then
         export ARCH=arm
         export CROSS_COMPILE="arm-linux-gnueabihf-"
         ;;
+    arm64)
+        export ARCH=arm64
+        export CROSS_COMPILE="aarch64-linux-gnu-"
+        ;;
     *)
         echo "error: unsupported architecture ($target_arch)"
         exit 1
-- 
2.1.4