Only for 64bits?

[SteMMo33]

Hello, please confirm me that the project is only for 64bits systems. I found the download for 64bits machine in CMakeLists:

...
set(FLUTTER_ENGINE_SHA b9523318caa1a99ffde8adaf331212eb879cabc9)

set(FLUTTER_EMBEDDER_ARTIFACTS_ZIP ${CMAKE_BINARY_DIR}/flutter_embedder_${FLUTTER_ENGINE_SHA}.zip)
set(FLUTTER_ARTIFACTS_ZIP          ${CMAKE_BINARY_DIR}/flutter_artifact_${FLUTTER_ENGINE_SHA}.zip)
set(FLUTTER_BUCKET_BASE "https://storage.googleapis.com/flutter_infra/flutter")

# Download and setup the Flutter Engine.
if(NOT EXISTS ${FLUTTER_EMBEDDER_ARTIFACTS_ZIP})
  file(DOWNLOAD
    ${FLUTTER_BUCKET_BASE}/${FLUTTER_ENGINE_SHA}/linux-x64/linux-x64-embedder
    ${FLUTTER_EMBEDDER_ARTIFACTS_ZIP}
...

Is it possible for 32bits machine? (Tinkerboard) Thanks