Test program linking Rust library to C++ program

Based on: https://dev.to/dandyvica/how-to-call-rust-functions-from-c-on-linux-h37

How to build

Assuming that g++, make, cargo are installed:

make

Run test program

make run

MSys2 - installing Rust in CLang64

We are using CLang64 because cargo/rust are not available for plain MSys.

In the console: C:\msys64\clang64.exe:

pacman -Ss cargo
pacman -S clang64/mingw-w64-clang-x86_64-cargo-c
cargo -V
# cargo 1.65.0

List the symbols

LD_LIBRARY_PATH=target/debug ldd ./target/cppcaller