Function libsql_malloc not found in Wasm module

I have been trying to play with libsql and WASM functions as described in this article while using the latest 0.2.1 release and the artifact libsql-0.2.1-wasm-udf.tar.gz from the release download page. Whenever I try to execute a SQL select statement (as described in the article) that calls the encrypt() function I get the following error:

libsql> CREATE TABLE secrets(secret_id, secret);
libsql> INSERT INTO secrets VALUES (1, encrypt('libSQL is great', 's3cr3tp4ss'));
Runtime error: Function libsql_malloc not found in Wasm module
libsql> ^D

The same worked fine in 0.1.0 release I believe.

I have also tried the wasmedge version - libsql-0.2.1-wasm-udf-wasmedge.tar.gz - but this tar is missing some libraries it depends on: libfmt.so.9 and libspdlog.so.1.11 which I managed to grab from the archives. However I get this error:

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:.libs:./usr/lib ./libsql 
./libsql: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.30' not found (required by .libs/libwasmedge.so.0)
./libsql: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.30' not found (required by ./usr/lib/libspdlog.so.1.11)
./libsql: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.30' not found (required by ./usr/lib/libfmt.so.9)

I guess it relies on a different version of libstdc++.so.6 compared to what I have on my Fedora 35 host.

BTW I did manage to get the same WASM function example to run on OSv using version 0.1.0 after adding some minimal file-sealing support to OSv (see https://github.com/cloudius-systems/osv/issues/1224). From my investigation, the wasmtime uses copy-on-write heap mappings which in turn relies on memfd_create which was missing from OSv. The copy-on-write heap mappings support can be turned off by compile option but maybe it makes sense to have it on for libsql. Having said all that I was eager to try to test the version of libsql with wasmedge.

Start by reproducing the encrypt() failure with libsql-0.2.1-wasm-udf.tar.gz and compare it with the reported 0.1.0 behavior. Inspect the Wasm UDF path around the missing libsql_malloc export, then separately verify the WasmEdge archive's libfmt.so.9, libspdlog.so.1.11, and libstdc++ dependencies. Done when the documented release artifact runs the SQL example on a supported host.