Relax substrate licensing scheme

LICENSE-APACHE2

@@ -0,0 +1,211 @@
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LICENSE → LICENSE-GPL3

@@ -672,3 +672,29 @@ may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
+                     "CLASSPATH" EXCEPTION TO THE GPL
+
+  Linking this library statically or dynamically with other modules is making 
+a combined work based on this library. Thus, the terms and conditions of the
+GNU General Public License cover the whole combination.
+
+  As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent modules,
+and to copy and distribute the resulting executable under terms of your
+choice, provided that you also meet, for each linked independent module,
+the terms and conditions of the license of that module. An independent
+module is a module which is not derived from or based on this library.
+If you modify this library, you may extend this exception to your version
+of the library, but you are not obligated to do so. If you do not wish to
+do so, delete this exception statement from your version.
+
+                                NOTE
+
+  Individual files contain the following tag instead of the full license text.
+
+    SPDX-License-Identifier:  GPL-3.0-or-later WITH Classpath-exception-2.0
+
+  This enables machine processing of license information based on the SPDX
+License Identifiers that are here available: http://spdx.org/licenses/

README.md

@@ -16,4 +16,4 @@ The security policy and procedures can be found in [`docs/SECURITY.md`](docs/SEC
 
 ## License
 
-Substrate is [GPL 3.0 licensed](LICENSE).
+Substrate Client (`/client/*` / `sc-*`) is licensed under [GPL v3.0 with a classpath linking exception](LICENSE-GPL3), primitives (`sp-*`), FRAME (`frame-*`) and pallets (`pallets-*`), binaries (`/bin`) and all other utilities are licensed under [Apache 2.0](LICENSE-APACHE2).

bin/node-template/node/src/command.rs

@@ -1,18 +1,19 @@
-// Copyright 2017-2020 Parity Technologies (UK) Ltd.
 // This file is part of Substrate.
 
-// Substrate is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
+// Copyright (C) 2017-2020 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
 
-// Substrate is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 
 use crate::chain_spec;
 use crate::cli::Cli;

bin/node/bench/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.8.0-dev"
 authors = ["Parity Technologies <[email protected]>"]
 description = "Substrate node integration benchmarks."
 edition = "2018"
-license = "GPL-3.0"
+license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

bin/node/bench/src/core.rs

@@ -1,18 +1,20 @@
-// Copyright 2020 Parity Technologies (UK) Ltd.
 // This file is part of Substrate.
 
-// Substrate is free software: you can redistribute it and/or modify
+// Copyright (C) 2020 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
+// the Free Software Foundation, either version 3 of the License, or 
 // (at your option) any later version.
 
-// Substrate is distributed in the hope that it will be useful,
+// This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 // GNU General Public License for more details.
 
 // You should have received a copy of the GNU General Public License
-// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 use std::{fmt, borrow::{Cow, ToOwned}};
 use serde::Serialize;

bin/node/bench/src/generator.rs

@@ -1,18 +1,20 @@
-// Copyright 2020 Parity Technologies (UK) Ltd.
 // This file is part of Substrate.
 
-// Substrate is free software: you can redistribute it and/or modify
+// Copyright (C) 2020 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
+// the Free Software Foundation, either version 3 of the License, or 
 // (at your option) any later version.
 
-// Substrate is distributed in the hope that it will be useful,
+// This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 // GNU General Public License for more details.
 
 // You should have received a copy of the GNU General Public License
-// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 use std::{collections::HashMap, sync::Arc};
 

bin/node/bench/src/import.rs

@@ -1,18 +1,20 @@
-// Copyright 2020 Parity Technologies (UK) Ltd.
 // This file is part of Substrate.
 
-// Substrate is free software: you can redistribute it and/or modify
+// Copyright (C) 2020 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
+// the Free Software Foundation, either version 3 of the License, or 
 // (at your option) any later version.
 
-// Substrate is distributed in the hope that it will be useful,
+// This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 // GNU General Public License for more details.
 
 // You should have received a copy of the GNU General Public License
-// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 //! Block import benchmark.
 //!