Skip to content

LICENSING.md

Latest commit

 

History

History
60 lines (53 loc) · 3.82 KB

LICENSING.md

File metadata and controls

60 lines (53 loc) · 3.82 KB
Raw

Licensing

The XBasic remake's own code is MIT licensed (LICENSE). The ported upstream XBasic source material in xbasic/ remains under the upstream GPL-2.0 / LGPL-2.1 licenses (complete canonical texts at xbasic/COPYING and xbasic/COPYING_LIB; per-file audit in xbasic/LICENSES.md).

Per-directory map

Path License Notes
crates/* (compiler, frontend, cli, runtime, gui, ide, link) MIT Declared in each Cargo.toml. Original code, written from scratch for this project.
selfhost/ MIT Self-hosted compiler sources written in XBasic for this project.
fixtures/, docs/, checks/, scripts/, prompts/ MIT Project test fixtures, documentation, and tooling.
xbasic/ upstream GPL-2 / LGPL-2.1 Tracked, distributed. Verbatim port of license-cleared source material from the upstream 6.4.5 release, reorganized (lib/, include/, demo/, crtl/, …). Copyright 1988-2000+ Max Reason; C runtime ports (crtl/) copyright 2000 Wade Maxfield (LGPL). Not relicensable by this project.
xbasic-6.2.3/, xbasic-6.3.26-D/, xbasic-6.4.5/, XBSourceLib/ upstream GPL-2 / LGPL-2.1 (XBSourceLib: none stated) Local reference material only — gitignored, not distributed. Each XBasic tree carries its own COPYING/COPYING_LIB; per-file headers govern. XBSourceLib has no explicit license statement and is therefore excluded from the tracked port.

Provenance rules

  1. MIT covers original work only. The Rust crates are a fresh implementation of documented XBasic behavior — not a translation of the upstream assembly (xlib.s) or the LGPL C ports (crtl/). Audited: no upstream copyright markers or copied code in crates/, selfhost/, fixtures/, checks/, scripts/. Any future code translated or copied from upstream sources must live under the upstream license (in xbasic/ or clearly marked), never under MIT.
  2. The tracked corpus is xbasic/. The gitignored legacy trees remain local-only inputs (superseded versions, generated .s assembly, binaries, unlicensed XBSourceLib). Tests targeting the ported tree run everywhere; tests targeting local-only material (.s source-coverage guard, XBSourceLib corpus rows) skip when the trees are absent.
  3. LGPL-derived C code lives in exactly one place — xbasic/crtl/ (upstream's own C ports). The .c counterpart files beside legacy .s files in the local 6.4.5 tree are pure reference stubs with no duplicated code; superseded dated snapshots are isolated in xbasic-6.4.5/src/linux/lib/old-versions/.
  4. Compilation does not propagate licenses. Compiling GPL/LGPL .x sources with the MIT toolchain leaves the toolchain MIT and the sources under their own license. A program that links the ported xbasic/lib libraries or crtl/ runtime inherits GPL/LGPL obligations for those parts; a program using only the MIT crates/xb-runtime C runtime is unencumbered.
  5. Nothing in this file grants or changes any license; it documents the declarations in LICENSE, the Cargo.toml files, and the upstream trees.

Known gaps (tracked as RR-11 in docs/17-open-work-roadmap.md)

  • Three upstream Win32 compatibility shims (xbasic/lib/gdi32.x, kernel32.x, user32.x) carry no copyright notice or license statement. They ship solely as part of the upstream release under its tree-level distribution; do not redistribute them separately until provenance is resolved.
  • checks/link-core-libs.sh combines GPL-header, LGPL-header, and no-notice inputs into one xblibs test artifact. That artifact is internal-test-only and must not be packaged or redistributed until shim provenance and distribution obligations are resolved. See README §License and docs/17 L15/RR-11.