4e8cb01b01
The current (experimental) spec for WebAssembly shared libraries does not include a full symbol table like the object format. This change extracts symbol information from the normal wasm exports. This is the first step in having the linker report undefined symbols when linking with shared libraries. The current behaviour is to ignore all undefined symbols when linking with `-pie` or `-shared`. See https://github.com/emscripten-core/emscripten/issues/18198