OldWin OldWin makes compatibility with Old Windows easier! The crate relies heavily on YY-Thunks and VC-LTL5 to solve the problem of missing APIs on older systems and API-SETs in the import table.

• Effortless Integration: Integrate YY-Thunks and VC-LTL5 just add entry to your build-dependencies and modify build.rs.
• Backward Compatibility: Effortlessly support Windows XP and later versions.
• Binary Size Optimization: Implement strategies to reduce the footprint of your application binaries.

Include OldWin in your Cargo.toml file:

vc-ltl5 is dependent on yy-thunks, so if you use vc-ltl5 yy-thunks will be automatically added.

# use yy-thunks and vc-ltl5 on Windows 7
[target.'cfg(target_family = "windows")'.dependencies]
oldwin-targets = { version = "0.1.1", default-features = false, features = [
  "win7",
  "yy-thunks",
  "vc-ltl5",
] }

[target.'cfg(target_family = "windows")'.build-dependencies]
# use yy-thunks and vc-ltl5 on Windows 7
oldwin = { version = "0.1.1", default-features = false, features = [
  "win7",
  "yy-thunks",
  "vc-ltl5",
] }

// build.rs
use std::error::Error;

fn main() -> Result<(), Box<dyn Error>> {
    // ... your code ...
    #[cfg(target_family = "windows")] {
        oldwin::overwrite_subsystem(oldwin::Subsystem::Console);
        oldwin::inject();
    }
    // ... your code ...
}

Modify your project cargo configuration to use the {x86, x86_64}-win7-windows-msvc toolchain.

rustup component add rust-src
rustup target add i686-win7-windows-msvc
rustup target add x86_64-win7-windows-msvc

[unstable]
build-std = ["core", "alloc", "std", "proc_macro", "test"]

If you want to statically link the C runtime, you can modify your cargo configuration to add -C target-feature=+crt-static to the rustflags.

# config.toml
[target.x86_64-win7-windows-msvc]
rustflags = [
  "-C", "target-feature=+crt-static",
]

[target.i686-win7-windows-msvc]
rustflags = [
  "-C", "target-feature=+crt-static",
]

Build your project using the {i686, x86_64}-win7-windows-msvc toolchain.

Remember to use nightly toolchain.

cargo build --target i686-win7-windows-msvc -Zbuild-std
cargo build --target x86_64-win7-windows-msvc -Zbuild-std

Contributions of all kinds are welcome, including:

• Issue reporting
• Pull Request submissions
• Documentation improvements

OldWin is released under the MIT License.

• YY-Thunks
• VC-LTL5