try

Author: lucacasonato

.github/workflows/ci.yml

@@ -112,7 +112,7 @@ jobs:
           sudo apt install -yq --no-install-suggests --no-install-recommends \
             binfmt-support g++-10-aarch64-linux-gnu g++-10-multilib \
             gcc-10-aarch64-linux-gnu libc6-arm64-cross qemu qemu-user \
-            qemu-user-binfmt
+            qemu-user-binfmt aarch64-linux-gnu-g++
 
           sudo ln -s /usr/aarch64-linux-gnu/lib/ld-linux-aarch64.so.1 \
                      /lib/ld-linux-aarch64.so.1