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classic-mac-rust

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Experiments using Rust code in classic Mac applications

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Rust on Classic Mac OS
======================

This repo includes my experiments running Rust code on PPC classic Mac OS.

Building
--------

**Note:** these steps have only been tested on Linux (Arch).

### Prerequisites

1. [My fork of the Retro68 with updated binutils][Retro68] (`binutils` branch)
   built and on `$PATH`. E.g. `export PATH=$PATH:/home/you/path/to/Retro68-build/toolchain/bin`
2. `rustup`
3. Docker (if not on Debian based system) or `binutils-powerpc-linux-gnu` on
   Debian based systems For non-Debian systems build the binutils docker image:
   `(cd powerpc-binutils && docker build -t binutils-objcopy .)`

### Prepare

```
mkdir build
cd build
cmake .. -DCMAKE_TOOLCHAIN_FILE=path/to/Retro68-build/toolchain/powerpc-apple-macos/cmake/retroppc.toolchain.cmake
cd ..
```

### Build

Compile the Rust code with:

```
cargo build --release -Z build-std=core,alloc --target powerpc-apple-macos.json
```

Convert the static library to XCOFF, either via Docker or `powerpc-linux-gnu-objcopy`
directly:

```
docker run --rm -it -v $(pwd):/src binutils-objcopy -O aixcoff-rs6000 /src/target/powerpc-apple-macos/release/libclassic_mac_rust.a /src/target/powerpc-apple-macos/release/libclassic_mac_rust.obj
```

Build the C code, link in the Rust code, and produce the final binary:

```
cmake --build build --target Dialog_APPL
```

### Running

`Dialog.bin` is the MacBinary encoded application, you can copy this to a
machine or emulator to run it. Retro68 provides the `LaunchAAPL` tool, which
combined with its server counterpart makes this very easy. With the server
running on a machine or emulator you can launch the binary directly from you
host with:

```
LaunchAPPL -e tcp --tcp-address 127.0.0.1 build/Dialog.bin
```

[Retro68]: https://github.com/wezm/Retro68/tree/binutils

classic-mac-rust

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