From 8646087b4aef1210f0d3dbf816def3a79ac3d8db Mon Sep 17 00:00:00 2001 From: Trevor Gross Date: Thu, 24 Oct 2024 20:13:56 -0500 Subject: [PATCH] Update licensing to MIT AND Apache-2.0 WITH LLVM-exception Currently, Cargo.toml specifies Apache-2.0 OR MIT, but LICENSE.txt describes MIT OR NCSA. compiler-builtins is derived from LLVM's compiler-rt. LICENSE.txt correctly reflects the state of compiler-rt prior to relicensing on 2019-01-19, during which time software was available for use under either MIT or the University of Illinois NCSA license. After relicensing, however, compiler-rt is available for use only under Apache-2.0 with the LLVM exception; this is not reflected anywhere in the repository. Update the SPDX license identifier to `MIT AND Apache-2.0 WITH LLVM-exception AND (MIT OR Apache-2.0)`. Each AND portion covers something specific: * Apache-2.0 WITH LLVM-exception: this covers work that is derived from the LLVM repository since after the LLVM relicensing. * MIT: This covers work that is derived from LLVM before the LLVM relicensing (under MIT OR NCSA), as well as the vendored `libm` components. * MIT AND Apache-2.0: This ensures that any contributions to this repository, in addition to meeting the above required licenses, is also released for use under the Rust-standard Apache-2.0 with no LLVM exception. See also the parallel license update in rust-lang/libm [1]. Fixes: https://github.com/rust-lang/compiler-builtins/issues/307 Closes: https://github.com/rust-lang/compiler-builtins/pull/511 Link: https://rust-lang.zulipchat.com/#narrow/channel/335408-foundation/topic/Request.20for.20legal.20team.20input.20on.20crate.20licensing Link: https://github.com/rust-lang/libm/pull/317 [1] --- Cargo.toml | 2 +- LICENSE.txt | 317 ++++++++++++++++++++++++++++++++++++++++------------ 2 files changed, 249 insertions(+), 70 deletions(-) diff --git a/Cargo.toml b/Cargo.toml index ab966b84..c29fe6af 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -2,7 +2,7 @@ authors = ["Jorge Aparicio "] name = "compiler_builtins" version = "0.1.135" -license = "MIT/Apache-2.0" +license = "MIT AND Apache-2.0 WITH LLVM-exception AND (MIT OR Apache-2.0)" readme = "README.md" repository = "https://github.com/rust-lang/compiler-builtins" homepage = "https://github.com/rust-lang/compiler-builtins" diff --git a/LICENSE.txt b/LICENSE.txt index 92bbe113..367e3538 100644 --- a/LICENSE.txt +++ b/LICENSE.txt @@ -1,91 +1,270 @@ -============================================================================== -compiler-builtins License -============================================================================== +compiler-builtins as a whole is available for use under both the MIT license +and the Apache-2.0 license with the LLVM exception (MIT AND Apache-2.0 WITH +LLVM-exception). -The compiler-builtins crate is dual licensed under both the University of -Illinois "BSD-Like" license and the MIT license. 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