File headers: SPDX License migration

Use a shorter/simpler license convention, stops the header taking so
much space.

Follow the SPDX license specification: https://spdx.org/licenses

- C/C++/objc/objc++
- Python
- Shell Scripts
- CMake, GNUmakefile

While most of the source tree has been included

- `./extern/` was left out.
- `./intern/cycles` & `./intern/atomic` are also excluded because they
  use different header conventions.

doc/license/SPDX-license-identifiers.txt has been added to list SPDX all
used identifiers.

See P2788 for the script that automated these edits.

Reviewed By: brecht, mont29, sergey

Ref D14069

36 files changed, 37 insertions, 543 deletions

diff --git a/source/blender/bmesh/tools/bmesh_beautify.c b/source/blender/bmesh/tools/bmesh_beautify.c
index 266b1c0cea8..3cb5d3513e3 100644
--- a/source/blender/bmesh/tools/bmesh_beautify.c
+++ b/source/blender/bmesh/tools/bmesh_beautify.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_beautify.h b/source/blender/bmesh/tools/bmesh_beautify.h
index a61ae55c3b0..34ff5b065fe 100644
--- a/source/blender/bmesh/tools/bmesh_beautify.h
+++ b/source/blender/bmesh/tools/bmesh_beautify.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_bevel.c b/source/blender/bmesh/tools/bmesh_bevel.c
index 5461e2421f2..e2e26c5c52b 100644
--- a/source/blender/bmesh/tools/bmesh_bevel.c
+++ b/source/blender/bmesh/tools/bmesh_bevel.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_bevel.h b/source/blender/bmesh/tools/bmesh_bevel.h
index 56533e83c39..9729d19bb10 100644
--- a/source/blender/bmesh/tools/bmesh_bevel.h
+++ b/source/blender/bmesh/tools/bmesh_bevel.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_bisect_plane.c b/source/blender/bmesh/tools/bmesh_bisect_plane.c
index d220b183b8d..3d7bacf7080 100644
--- a/source/blender/bmesh/tools/bmesh_bisect_plane.c
+++ b/source/blender/bmesh/tools/bmesh_bisect_plane.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_bisect_plane.h b/source/blender/bmesh/tools/bmesh_bisect_plane.h
index d3c1c6f4c62..fff53879ad3 100644
--- a/source/blender/bmesh/tools/bmesh_bisect_plane.h
+++ b/source/blender/bmesh/tools/bmesh_bisect_plane.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_boolean.cc b/source/blender/bmesh/tools/bmesh_boolean.cc
index 91883b0adee..216c73564c8 100644
--- a/source/blender/bmesh/tools/bmesh_boolean.cc
+++ b/source/blender/bmesh/tools/bmesh_boolean.cc
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_boolean.h b/source/blender/bmesh/tools/bmesh_boolean.h
index f97f49a7470..c661225a030 100644
--- a/source/blender/bmesh/tools/bmesh_boolean.h
+++ b/source/blender/bmesh/tools/bmesh_boolean.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_decimate.h b/source/blender/bmesh/tools/bmesh_decimate.h
index 336b653d462..9f2f745b775 100644
--- a/source/blender/bmesh/tools/bmesh_decimate.h
+++ b/source/blender/bmesh/tools/bmesh_decimate.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_decimate_collapse.c b/source/blender/bmesh/tools/bmesh_decimate_collapse.c
index c653b2b8007..07d4172d037 100644
--- a/source/blender/bmesh/tools/bmesh_decimate_collapse.c
+++ b/source/blender/bmesh/tools/bmesh_decimate_collapse.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_decimate_dissolve.c b/source/blender/bmesh/tools/bmesh_decimate_dissolve.c
index d8a586acee5..41c995a52bf 100644
--- a/source/blender/bmesh/tools/bmesh_decimate_dissolve.c
+++ b/source/blender/bmesh/tools/bmesh_decimate_dissolve.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c b/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c
index ca0f31fdf75..bd479bad945 100644
--- a/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c
+++ b/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_edgenet.c b/source/blender/bmesh/tools/bmesh_edgenet.c
index 4cad1d3cb3c..110017739b9 100644
--- a/source/blender/bmesh/tools/bmesh_edgenet.c
+++ b/source/blender/bmesh/tools/bmesh_edgenet.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_edgenet.h b/source/blender/bmesh/tools/bmesh_edgenet.h
index 60e9d9acff1..d9e79d1cf09 100644
--- a/source/blender/bmesh/tools/bmesh_edgenet.h
+++ b/source/blender/bmesh/tools/bmesh_edgenet.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_edgesplit.c b/source/blender/bmesh/tools/bmesh_edgesplit.c
index cd5200a660d..a703b5338ef 100644
--- a/source/blender/bmesh/tools/bmesh_edgesplit.c
+++ b/source/blender/bmesh/tools/bmesh_edgesplit.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_edgesplit.h b/source/blender/bmesh/tools/bmesh_edgesplit.h
index dd835ba335c..a89e3104e29 100644
--- a/source/blender/bmesh/tools/bmesh_edgesplit.h
+++ b/source/blender/bmesh/tools/bmesh_edgesplit.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_intersect.c b/source/blender/bmesh/tools/bmesh_intersect.c
index 6824dd5008a..8e1dfbebe47 100644
--- a/source/blender/bmesh/tools/bmesh_intersect.c
+++ b/source/blender/bmesh/tools/bmesh_intersect.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_intersect.h b/source/blender/bmesh/tools/bmesh_intersect.h
index 4fc6460a35f..0ce90b9ed7d 100644
--- a/source/blender/bmesh/tools/bmesh_intersect.h
+++ b/source/blender/bmesh/tools/bmesh_intersect.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_intersect_edges.c b/source/blender/bmesh/tools/bmesh_intersect_edges.c
index eb56075e136..3efab3f78c8 100644
--- a/source/blender/bmesh/tools/bmesh_intersect_edges.c
+++ b/source/blender/bmesh/tools/bmesh_intersect_edges.c
@@ -1,21 +1,5 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2019 Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2019 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_intersect_edges.h b/source/blender/bmesh/tools/bmesh_intersect_edges.h
index cd7293c4a0b..94aae4d5723 100644
--- a/source/blender/bmesh/tools/bmesh_intersect_edges.h
+++ b/source/blender/bmesh/tools/bmesh_intersect_edges.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path.c b/source/blender/bmesh/tools/bmesh_path.c
index 52bb92a6221..5f1003ad808 100644
--- a/source/blender/bmesh/tools/bmesh_path.c
+++ b/source/blender/bmesh/tools/bmesh_path.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path.h b/source/blender/bmesh/tools/bmesh_path.h
index 79c3d3a5d63..405dfc7ae09 100644
--- a/source/blender/bmesh/tools/bmesh_path.h
+++ b/source/blender/bmesh/tools/bmesh_path.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_path_region.c b/source/blender/bmesh/tools/bmesh_path_region.c
index 23be3cdf117..1e464108b84 100644
--- a/source/blender/bmesh/tools/bmesh_path_region.c
+++ b/source/blender/bmesh/tools/bmesh_path_region.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path_region.h b/source/blender/bmesh/tools/bmesh_path_region.h
index 2badead33a0..791c76942b9 100644
--- a/source/blender/bmesh/tools/bmesh_path_region.h
+++ b/source/blender/bmesh/tools/bmesh_path_region.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_path_region_uv.c b/source/blender/bmesh/tools/bmesh_path_region_uv.c
index 517913b5b56..5c70f7fa5ec 100644
--- a/source/blender/bmesh/tools/bmesh_path_region_uv.c
+++ b/source/blender/bmesh/tools/bmesh_path_region_uv.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path_region_uv.h b/source/blender/bmesh/tools/bmesh_path_region_uv.h
index 2f29ef2a36e..fa1b2bfcf9b 100644
--- a/source/blender/bmesh/tools/bmesh_path_region_uv.h
+++ b/source/blender/bmesh/tools/bmesh_path_region_uv.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_path_uv.c b/source/blender/bmesh/tools/bmesh_path_uv.c
index 131a8aa0085..a2b35839454 100644
--- a/source/blender/bmesh/tools/bmesh_path_uv.c
+++ b/source/blender/bmesh/tools/bmesh_path_uv.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_path_uv.h b/source/blender/bmesh/tools/bmesh_path_uv.h
index 5f35d2c1594..af7341e2219 100644
--- a/source/blender/bmesh/tools/bmesh_path_uv.h
+++ b/source/blender/bmesh/tools/bmesh_path_uv.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_region_match.c b/source/blender/bmesh/tools/bmesh_region_match.c
index 2ada18f51e7..d693755053c 100644
--- a/source/blender/bmesh/tools/bmesh_region_match.c
+++ b/source/blender/bmesh/tools/bmesh_region_match.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_region_match.h b/source/blender/bmesh/tools/bmesh_region_match.h
index 7b7233783ce..3ea426e9326 100644
--- a/source/blender/bmesh/tools/bmesh_region_match.h
+++ b/source/blender/bmesh/tools/bmesh_region_match.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_separate.c b/source/blender/bmesh/tools/bmesh_separate.c
index e00829604d5..2282c482e52 100644
--- a/source/blender/bmesh/tools/bmesh_separate.c
+++ b/source/blender/bmesh/tools/bmesh_separate.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_separate.h b/source/blender/bmesh/tools/bmesh_separate.h
index 8c599eef2b0..edece915a2e 100644
--- a/source/blender/bmesh/tools/bmesh_separate.h
+++ b/source/blender/bmesh/tools/bmesh_separate.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #pragma once
 
diff --git a/source/blender/bmesh/tools/bmesh_triangulate.c b/source/blender/bmesh/tools/bmesh_triangulate.c
index 08dbac95b56..9f1d24ee654 100644
--- a/source/blender/bmesh/tools/bmesh_triangulate.c
+++ b/source/blender/bmesh/tools/bmesh_triangulate.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_triangulate.h b/source/blender/bmesh/tools/bmesh_triangulate.h
index 0d78b6a74b4..676e5c01280 100644
--- a/source/blender/bmesh/tools/bmesh_triangulate.h
+++ b/source/blender/bmesh/tools/bmesh_triangulate.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_wireframe.c b/source/blender/bmesh/tools/bmesh_wireframe.c
index 67010fc89c7..14ec45f14b0 100644
--- a/source/blender/bmesh/tools/bmesh_wireframe.c
+++ b/source/blender/bmesh/tools/bmesh_wireframe.c
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh
diff --git a/source/blender/bmesh/tools/bmesh_wireframe.h b/source/blender/bmesh/tools/bmesh_wireframe.h
index 8e523780a67..a5f1da8b3e9 100644
--- a/source/blender/bmesh/tools/bmesh_wireframe.h
+++ b/source/blender/bmesh/tools/bmesh_wireframe.h
@@ -1,18 +1,4 @@
-/*
- * 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 2
- * of the License, or (at your option) any later version.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup bmesh