https://github.com/leanprover/soplex-ffi

Lean 4 FFI bindings for SoPlex
https://github.com/leanprover/soplex-ffi

Last synced: 11 days ago
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Lean 4 FFI bindings for SoPlex

• Host: GitHub
• URL: https://github.com/leanprover/soplex-ffi
• Owner: leanprover
• License: apache-2.0
• Created: 2026-05-14T00:41:55.000Z (about 1 month ago)
• Default Branch: main
• Last Pushed: 2026-06-05T00:59:52.000Z (13 days ago)
• Last Synced: 2026-06-05T01:11:10.064Z (13 days ago)
• Language: C++
• Size: 129 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# SoplexFFI

[![Lean](https://img.shields.io/badge/Lean-4.31.0--rc1-blue.svg)](./lean-toolchain)

[![License](https://img.shields.io/github/license/leanprover/soplex-ffi.svg)](./LICENSE)

> **New here? Start at [`leanprover/lp`](https://github.com/leanprover/lp)** — the entry

> point for the `lp` / `maximize` tactics and the verified LP solver. This repository is one

> package of that family: the raw SoPlex FFI bindings.

Lean 4 FFI bindings for [SoPlex](https://soplex.zib.de/), the linear

programming solver from the SCIP optimization suite.

This repository contains the direct binding only: the vendored SoPlex

build, the C++ bridge, Lean extern wrappers, marshalling, direct solve

APIs, and MPS / LP file I/O. The verified Lean layer lives in

[`leanprover/lp`](https://github.com/leanprover/lp).

## Build

System dependencies:

| Platform | Packages |

|----------|----------|

| Linux    | `build-essential cmake libgmp-dev libgmpxx4ldbl libboost-dev` |

| macOS    | `brew install gmp boost cmake` (plus Xcode Command Line Tools) |

| Windows  | MSYS2 `mingw-w64-x86_64-{gcc,cmake,ninja,make,gmp,boost}` |

```bash

git clone --recurse-submodules https://github.com/leanprover/soplex-ffi

cd soplex-ffi

lake exe ffi-check

```

If you cloned without submodules, Lake attempts to initialize the

vendored SoPlex submodule automatically. If that fails, run

`git submodule update --init --recursive`.

## Layout

```

SoplexFFI.lean          # direct FFI package entry point

SoplexFFI/              # thin Lean API, types, and validation

ffi/                    # C++ bridge and C ABI entry points

vendor/soplex           # vendor submodule (scipopt/soplex, tag v8.0.2)

lakefile.lean           # Lake package and extern_lib build

```

## Licence

`SoplexFFI` is licenced under the [Apache License 2.0](./LICENSE),

matching SoPlex itself. The compiled binary's GMP runtime dependency

(LGPL) is linked dynamically by default. SoPlex itself is linked into

the Lean shared library from the vendored static archive.