Testing on Linux fails with 'undefined symbol: lua_getmetatable'

[drauschenbach]

On a Raspberry Pi 4 with Debian 12:

$ cargo build --features lua51
(success)

$ cd testcrate
$ cargo test --features lua51

running 2 tests
test test_encode_error ... FAILED
test test_encode_decode ... FAILED

failures:

---- test_encode_error stdout ----
Error: RuntimeError("error loading module 'ryaml' from file '/home/davidr/workspaces/lua-ryaml/target/debug/deps/libryaml.so':\n\t/home/davidr/workspaces/lua-ryaml/target/debug/deps/libryaml.so: undefined symbol: lua_getmetatable\nstack traceback:\n\t[C]: in ?\n\t[C]: in ?\n\t[C]: in function 'require'\n\t[string \"testcrate/tests/tests.rs:41:9\"]:2: in main chunk")
...

$ rustc -vV | sed -n 's|host: ||p'
aarch64-unknown-linux-gnu

[khvzak]

This is becase my testcrate does not has config for aarch64 to export symbols (from FAQ)
I'll fix it

[drauschenbach]

This seems to work:

rustflags = ["-C", "link-args=-rdynamic"]