Properly support libjemalloc multiarch

debian/conf/jellyfin

@@ -31,7 +31,7 @@ JELLYFIN_WEB_OPT="--webdir=/usr/share/jellyfin/web"
 JELLYFIN_FFMPEG_OPT="--ffmpeg=/usr/lib/jellyfin-ffmpeg/ffmpeg"
 
 # Use jemalloc2 for improved RAM usage (#11588)
-LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.2
+LD_PRELOAD=/usr/lib/jellyfin/libjemalloc.so
 
 # Disable glibc dynamic heap adjustment
 MALLOC_TRIM_THRESHOLD_=131072

debian/jellyfin-server.postinst

@@ -19,6 +19,8 @@ CONFIGDATA=${JELLYFIN_CONFIG_DIRECTORY-/etc/$NAME}
 LOGDATA=${JELLYFIN_LOG_DIRECTORY-/var/log/$NAME}
 CACHEDATA=${JELLYFIN_CACHE_DIRECTORY-/var/cache/$NAME}
 
+MULTIARCH_ARCH="$( dpkg-architecture -qDEB_HOST_MULTIARCH )"
+
 case "$1" in
   configure)
     # create jellyfin group if it does not exist
@@ -50,6 +52,9 @@ case "$1" in
         fi
     done
 
+    # Install libjemalloc.so symlink into /usr/lib/jellyfin
+    ln -sf /usr/lib/${MULTIARCH_ARCH}/libjemalloc.so.2 /usr/lib/jellyfin/libjemalloc.so
+
     # Install jellyfin symlink into /usr/bin
     ln -sf /usr/lib/jellyfin/bin/jellyfin /usr/bin/jellyfin