Compiling cdylib about cxx

[jwhear]

I was tinkering with this myself today. My workaround solution at the moment is to build the rust code as a static library. Here's my setup (crate name is sqlite_adaptor).

// Cargo.toml
[lib]
crate-type = ["staticlib"]

This produces target/debug/sqlite_adaptor.a

The next step is to link this static library with the cxxbridge static library built by your build.rs into a shared library:

// Makefile
debug: target/debug/libsqlite_adaptor.so
bridge = $(shell find target/debug/ -name libcppbridge.a)

target/debug/libsqlite_adaptor.so:
	gcc -shared -Wl,--whole-archive target/debug/libsqlite_adaptor.a \
		-Wl,--no-whole-archive $(bridge) \
		-o target/debug/libsqlite_adaptor.so

This is pretty janky right now as I'm still hacking on it, but it produces a shared library with the symbols from Rust library and the needed bridge code in target/debug/libsqlite_adaptor.so