Try to fix linux cross-build; add arm64 packages

Author: lool

.github/workflows/linux.yml

@@ -56,10 +56,15 @@ jobs:
       - name: Build Linux kernel deb for Qualcomm hardware
         run: |
             set -ux
+            # download arm64 package lists to install cross build-dependencies
+            if "$(dpkg --print-architecture != arm64)"; then
+                dpkg --add-architecture arm64
+                apt update
+            fi
             # install build-dependencies; TODO: --no-install-recommends
             apt -y install git crossbuild-essential-arm64 make flex bison bc \
-                libelf-dev libssl-dev dpkg-dev debhelper-compat kmod python3 \
-                rsync coreutils
+                libelf-dev libssl-dev:arm64 dpkg-dev debhelper-compat kmod
+                python3 rsync coreutils
             scripts/build-linux-deb.sh
 
       - name: Upload results to fileserver

scripts/build-linux-deb.sh

@@ -27,7 +27,7 @@ packages="git"
 # a cross-compiler on other architectures
 packages="${packages} crossbuild-essential-arm64"
 # linux build-dependencies
-packages="${packages} make flex bison bc libelf-dev libssl-dev"
+packages="${packages} make flex bison bc libelf-dev libssl-dev:arm64"
 # linux build-dependencies for debs
 packages="${packages} dpkg-dev debhelper-compat kmod python3 rsync"
 # for nproc