deploy: cross-compile arm64 binaries on the dev machinev0.1.13

The target only assembles the image from prebuilt binaries, so redeploys
no longer compile sqlite/argon2 on the NAS. New deploy/Dockerfile.cross
provides the gcc-aarch64-linux-gnu toolchain; the Dockerfile uses
.prebuilt/ when present.

1 files changed, 15 insertions, 2 deletions

diff --git a/scripts/deploy.sh b/scripts/deploy.sh
index 25c86dc..c345a21 100755
--- a/scripts/deploy.sh
+++ b/scripts/deploy.sh
@@ -47,7 +47,7 @@ case "$BOKF_BUILD" in
         if [ "$(uname -m)" = "$host_arch" ]; then
             BOKF_BUILD=local
         else
-            echo "deploy: host is $host_arch, building there"
+            echo "deploy: host is $host_arch, cross-building here"
             BOKF_BUILD=remote
         fi
         ;;
@@ -64,12 +64,25 @@ if [ "$BOKF_BUILD" = local ]; then
     echo "deploy: shipping image to $BOKF_HOST"
     docker save "bokf:$TAG" | gzip | "${SSH[@]}" 'gunzip | docker load'
 else
-    echo "deploy: building image bokf:$TAG on $BOKF_HOST"
+    echo "deploy: cross-compiling $host_arch binaries on this machine"
+    rm -rf .prebuilt
+    mkdir -p .prebuilt
+    docker build -q -f deploy/Dockerfile.cross -t bokf-cross deploy/ >/dev/null
+    docker run --rm -e "VERSION=$TAG" -v "$PWD":/src:ro \
+        -v "$PWD/.prebuilt":/out bokf-cross
+    if command -v file >/dev/null 2>&1 &&
+        ! file .prebuilt/bokfd | grep -q aarch64; then
+        echo "deploy: cross-build produced no arm64 binary" >&2
+        rm -rf .prebuilt
+        exit 1
+    fi
+    echo "deploy: assembling image bokf:$TAG on $BOKF_HOST"
     tar -cf - \
         --exclude=./.git --exclude=./build --exclude=./var --exclude=./.env \
         --exclude='./*.se' --exclude='./*.db' --exclude='./*.db-wal' \
         --exclude='./*.db-shm' --exclude=./docs . |
         "${SSH[@]}" "docker build --build-arg 'VERSION=$TAG' -t 'bokf:$TAG' -"
+    rm -rf .prebuilt
 fi
 
 remote "mkdir -p '$BOKF_REMOTE_DIR'"