Tier: 3

Windows targets continuing support of windows7.

Target maintainers

  • @roblabla


This target supports all of core, alloc, std and test. This is automatically tested every night on private infrastructure hosted by the maintainer. Host tools may also work, though those are not currently tested.

Those targets follow Windows calling convention for extern "C".

Like any other Windows target, the created binaries are in PE format.

Building the target

You can build Rust with support for the targets by adding it to the target list in config.toml:

build-stage = 1
target = [ "x86_64-win7-windows-msvc" ]

Building Rust programs

Rust does not ship pre-compiled artifacts for this target. To compile for this target, you will either need to build Rust with the target enabled (see "Building the target" above), or build your own copy by using build-std or similar.


Created binaries work fine on Windows or Wine using native hardware. Remote testing is possible using the remote-test-server described here.

Cross-compilation toolchains and C code

Compatible C code can be built with either MSVC's cl.exe or LLVM's clang-cl.

Cross-compilation is possible using clang-cl/lld-link. It also requires the Windows SDK, which can be acquired using xwin.

  • Install clang-cl and lld-link on your machine, and make sure they are in your $PATH.

  • Install xwin: cargo install xwin

  • Use xwin to install the Windows SDK: xwin splat --output winsdk

  • Create an xwin-lld-link script with the following content:

    #!/usr/bin/env bash
    set -e
    lld-link "$@" /libpath:$XWIN/crt/lib/x86_64 /libpath:$XWIN/sdk/lib/um/x86_64 /libpath:$XWIN/sdk/lib/ucrt/x86_64
  • Create an xwin-clang-cl script with the following content:

    #!/usr/bin/env bash
    set -e
    clang-cl /imsvc "$XWIN/crt/include" /imsvc "$XWIN/sdk/include/ucrt" /imsvc "$XWIN/sdk/include/um" /imsvc "$XWIN/sdk/include/shared" --target="x86_64-pc-windows-msvc" "$@"
  • In your config.toml, add the following lines:

    linker = "path/to/xwin-lld-link"
    cc = "path/to/xwin-clang-cl"

You should now be able to cross-compile the Rust std, and any rust program.