Use SPDX-License-Identifier consistently

This replaces all of the Apache blurbs at the start of each file with an
`# SPDX-License-Identifier: Apache-2.0` string. It also fixes existing
uses to be consistent in capitalization, and to be placed above any
copyright notices.

This removes nearly 3000 lines of boilerplate from the project (only
python files), which no developer cares to look at.

SPDX is in common use, particularly in the Linux kernel, and is the
recommended format for Meson's own `project(license: )` field

21 files changed, 23 insertions, 243 deletions

diff --git a/mesonbuild/dependencies/__init__.py b/mesonbuild/dependencies/__init__.py
index c6dabc50e..0bfca9784 100644
--- a/mesonbuild/dependencies/__init__.py
+++ b/mesonbuild/dependencies/__init__.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2017 The Meson development team
 
-# 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.
 
 from .base import Dependency, InternalDependency, ExternalDependency, NotFoundDependency, MissingCompiler
 from .base import (
diff --git a/mesonbuild/dependencies/base.py b/mesonbuild/dependencies/base.py
index 6ab2bef7e..0d946b853 100644
--- a/mesonbuild/dependencies/base.py
+++ b/mesonbuild/dependencies/base.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2018 The Meson development team
 
-# 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.
-
 # This file contains the detection logic for external dependencies.
 # Custom logic for several other packages are in separate files.
 
diff --git a/mesonbuild/dependencies/boost.py b/mesonbuild/dependencies/boost.py
index 19c629d5b..a72b3d162 100644
--- a/mesonbuild/dependencies/boost.py
+++ b/mesonbuild/dependencies/boost.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2020 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 import re
diff --git a/mesonbuild/dependencies/cmake.py b/mesonbuild/dependencies/cmake.py
index 46a58c134..c76592ba3 100644
--- a/mesonbuild/dependencies/cmake.py
+++ b/mesonbuild/dependencies/cmake.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2021 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 from .base import ExternalDependency, DependencyException, DependencyTypeName
diff --git a/mesonbuild/dependencies/coarrays.py b/mesonbuild/dependencies/coarrays.py
index 1c59792e6..7701c06ec 100644
--- a/mesonbuild/dependencies/coarrays.py
+++ b/mesonbuild/dependencies/coarrays.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2019 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 import functools
diff --git a/mesonbuild/dependencies/configtool.py b/mesonbuild/dependencies/configtool.py
index 3c5235601..679c69f5d 100644
--- a/mesonbuild/dependencies/configtool.py
+++ b/mesonbuild/dependencies/configtool.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2021 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 from .base import ExternalDependency, DependencyException, DependencyTypeName
diff --git a/mesonbuild/dependencies/cuda.py b/mesonbuild/dependencies/cuda.py
index aaed6b32c..1a7b3cace 100644
--- a/mesonbuild/dependencies/cuda.py
+++ b/mesonbuild/dependencies/cuda.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2019 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 import glob
diff --git a/mesonbuild/dependencies/detect.py b/mesonbuild/dependencies/detect.py
index 9428d547b..faf024de9 100644
--- a/mesonbuild/dependencies/detect.py
+++ b/mesonbuild/dependencies/detect.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2021 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 import collections, functools, importlib
diff --git a/mesonbuild/dependencies/dev.py b/mesonbuild/dependencies/dev.py
index 09f55b705..b4732e4d2 100644
--- a/mesonbuild/dependencies/dev.py
+++ b/mesonbuild/dependencies/dev.py
@@ -1,20 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2019 The Meson development team
 
-# 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.
-
-# This file contains the detection logic for external dependencies useful for
-# development purposes, such as testing, debugging, etc..
-
 from __future__ import annotations
 
 import glob
diff --git a/mesonbuild/dependencies/dub.py b/mesonbuild/dependencies/dub.py
index c206ce9e7..e4f09d4d3 100644
--- a/mesonbuild/dependencies/dub.py
+++ b/mesonbuild/dependencies/dub.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2021 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 from .base import ExternalDependency, DependencyException, DependencyTypeName
diff --git a/mesonbuild/dependencies/factory.py b/mesonbuild/dependencies/factory.py
index d50ce0f6b..aac09cafa 100644
--- a/mesonbuild/dependencies/factory.py
+++ b/mesonbuild/dependencies/factory.py
@@ -1,17 +1,7 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2021 The Meson development team
-# Copyright © 2021 Intel Corporation
+# Copyright © 2021-2023 Intel Corporation
 
-# 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.
 from __future__ import annotations
 
 import functools
diff --git a/mesonbuild/dependencies/framework.py b/mesonbuild/dependencies/framework.py
index 6c0b1f14f..cd53ff718 100644
--- a/mesonbuild/dependencies/framework.py
+++ b/mesonbuild/dependencies/framework.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2021 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 from .base import DependencyTypeName, ExternalDependency, DependencyException
diff --git a/mesonbuild/dependencies/hdf5.py b/mesonbuild/dependencies/hdf5.py
index a437e8472..a00b5988b 100644
--- a/mesonbuild/dependencies/hdf5.py
+++ b/mesonbuild/dependencies/hdf5.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2019 The Meson development team
 
-# 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.
-
 # This file contains the detection logic for miscellaneous external dependencies.
 from __future__ import annotations
 
diff --git a/mesonbuild/dependencies/misc.py b/mesonbuild/dependencies/misc.py
index b41f3c261..bec1466e9 100644
--- a/mesonbuild/dependencies/misc.py
+++ b/mesonbuild/dependencies/misc.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2019 The Meson development team
 
-# 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.
-
 # This file contains the detection logic for miscellaneous external dependencies.
 from __future__ import annotations
 
diff --git a/mesonbuild/dependencies/mpi.py b/mesonbuild/dependencies/mpi.py
index d9a1585e1..f9c911c29 100644
--- a/mesonbuild/dependencies/mpi.py
+++ b/mesonbuild/dependencies/mpi.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2019 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 import functools
diff --git a/mesonbuild/dependencies/pkgconfig.py b/mesonbuild/dependencies/pkgconfig.py
index e86206b88..d00001811 100644
--- a/mesonbuild/dependencies/pkgconfig.py
+++ b/mesonbuild/dependencies/pkgconfig.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2021 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 from pathlib import Path
diff --git a/mesonbuild/dependencies/platform.py b/mesonbuild/dependencies/platform.py
index 87726b579..335faed2c 100644
--- a/mesonbuild/dependencies/platform.py
+++ b/mesonbuild/dependencies/platform.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2017 The Meson development team
 
-# 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.
-
 # This file contains the detection logic for external dependencies that are
 # platform-specific (generally speaking).
 from __future__ import annotations
diff --git a/mesonbuild/dependencies/python.py b/mesonbuild/dependencies/python.py
index 9aea6bda8..342d94e72 100644
--- a/mesonbuild/dependencies/python.py
+++ b/mesonbuild/dependencies/python.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2022 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 import functools, json, os, textwrap
diff --git a/mesonbuild/dependencies/qt.py b/mesonbuild/dependencies/qt.py
index 25cf610f0..a331187ed 100644
--- a/mesonbuild/dependencies/qt.py
+++ b/mesonbuild/dependencies/qt.py
@@ -1,18 +1,7 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2017 The Meson development team
-# Copyright © 2021 Intel Corporation
-# SPDX-license-identifier: Apache-2.0
+# Copyright © 2021-2023 Intel Corporation
 
-# 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.
 from __future__ import annotations
 
 """Dependency finders for the Qt framework."""
diff --git a/mesonbuild/dependencies/scalapack.py b/mesonbuild/dependencies/scalapack.py
index a8e20f405..bfc83b138 100644
--- a/mesonbuild/dependencies/scalapack.py
+++ b/mesonbuild/dependencies/scalapack.py
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2020 The Meson development team
 
-# 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.
 from __future__ import annotations
 
 from pathlib import Path
diff --git a/mesonbuild/dependencies/ui.py b/mesonbuild/dependencies/ui.py
index 6de55348b..cc17377a6 100644
--- a/mesonbuild/dependencies/ui.py
+++ b/mesonbuild/dependencies/ui.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2017 The Meson development team
 
-# 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.
-
 # This file contains the detection logic for external dependencies that
 # are UI-related.
 from __future__ import annotations