diff --git a/COPYRIGHT.txt b/COPYRIGHT.txt
index 02cd733c92cd..d41f40a78bc9 100644
--- a/COPYRIGHT.txt
+++ b/COPYRIGHT.txt
@@ -218,7 +218,7 @@ License: glslang
 Files: ./thirdparty/graphite/
 Comment: Graphite engine
 Copyright: 2010, SIL International
-License: MPL-2.0
+License: Expat
 
 Files: ./thirdparty/harfbuzz/
 Comment: HarfBuzz text shaping library
diff --git a/modules/text_server_adv/SCsub b/modules/text_server_adv/SCsub
index 3c7a89b70563..4a9c7b3567d8 100644
--- a/modules/text_server_adv/SCsub
+++ b/modules/text_server_adv/SCsub
@@ -223,9 +223,6 @@ if env["builtin_graphite"] and freetype_enabled and env["graphite"]:
         ]
     )
 
-    if env.msvc:  # Not our business to fix.
-        env_graphite.Append(CCFLAGS=["-D_SILENCE_ALL_CXX17_DEPRECATION_WARNINGS"])
-
     lib = env_graphite.add_library("graphite_builtin", thirdparty_sources)
     thirdparty_obj += lib
 
diff --git a/thirdparty/README.md b/thirdparty/README.md
index 01277c5f7da2..717cc835b000 100644
--- a/thirdparty/README.md
+++ b/thirdparty/README.md
@@ -217,8 +217,8 @@ Files extracted from upstream source:
 ## graphite
 
 - Upstream: https://github.com/silnrsi/graphite
-- Version: 1.3.14 (80c52493ef42e6fe605a69dcddd2a691cd8a1380, 2021)
-- License: MPL-2.0
+- Version: 1.3.14 (27572742003b93dc53dc02c01c237b72c6c25f54, 2022)
+- License: MIT
 
 Files extracted from upstream source:
 
diff --git a/thirdparty/graphite/include/graphite2/Font.h b/thirdparty/graphite/include/graphite2/Font.h
index fe569295a53f..b0a1e36370e5 100644
--- a/thirdparty/graphite/include/graphite2/Font.h
+++ b/thirdparty/graphite/include/graphite2/Font.h
@@ -1,29 +1,5 @@
-/*  GRAPHITE2 LICENSING
-
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-    Alternatively, the contents of this file may be used under the terms
-    of the Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
+/* SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later */
+/* Copyright 2010, SIL International, All rights reserved. */
 #pragma once
 
 #include "graphite2/Types.h"
diff --git a/thirdparty/graphite/include/graphite2/Log.h b/thirdparty/graphite/include/graphite2/Log.h
index a5a6947fabe9..d83b1b90e766 100644
--- a/thirdparty/graphite/include/graphite2/Log.h
+++ b/thirdparty/graphite/include/graphite2/Log.h
@@ -1,29 +1,5 @@
-/*  GRAPHITE2 LICENSING
-
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-    Alternatively, the contents of this file may be used under the terms
-    of the Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
+/* SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later */
+/* Copyright 2010, SIL International, All rights reserved. */
 #pragma once
 
 #include <graphite2/Types.h>
diff --git a/thirdparty/graphite/include/graphite2/Segment.h b/thirdparty/graphite/include/graphite2/Segment.h
index 0e24f5d7955a..9969b4eb45e7 100644
--- a/thirdparty/graphite/include/graphite2/Segment.h
+++ b/thirdparty/graphite/include/graphite2/Segment.h
@@ -1,29 +1,5 @@
-/*  GRAPHITE2 LICENSING
-
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-    Alternatively, the contents of this file may be used under the terms
-    of the Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
+/* SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later */
+/* Copyright 2010, SIL International, All rights reserved. */
 #pragma once
 
 #include "graphite2/Types.h"
diff --git a/thirdparty/graphite/include/graphite2/Types.h b/thirdparty/graphite/include/graphite2/Types.h
index 916c91191b50..32236a6195b5 100644
--- a/thirdparty/graphite/include/graphite2/Types.h
+++ b/thirdparty/graphite/include/graphite2/Types.h
@@ -1,29 +1,5 @@
-/*  GRAPHITE2 LICENSING
-
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-    Alternatively, the contents of this file may be used under the terms
-    of the Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
+/* SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later */
+/* Copyright 2010, SIL International, All rights reserved. */
 #pragma once
 
 #include <stddef.h>
diff --git a/thirdparty/graphite/src/CmapCache.cpp b/thirdparty/graphite/src/CmapCache.cpp
index d070019a3405..ac860e9ee295 100644
--- a/thirdparty/graphite/src/CmapCache.cpp
+++ b/thirdparty/graphite/src/CmapCache.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 
 #include "inc/Main.h"
 #include "inc/CmapCache.h"
diff --git a/thirdparty/graphite/src/Code.cpp b/thirdparty/graphite/src/Code.cpp
index ec5ab298ca4b..4a53ae871b7b 100644
--- a/thirdparty/graphite/src/Code.cpp
+++ b/thirdparty/graphite/src/Code.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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 class represents loaded graphite stack machine code.  It performs
 // basic sanity checks, on the incoming code to prevent more obvious problems
 // from crashing graphite.
diff --git a/thirdparty/graphite/src/Collider.cpp b/thirdparty/graphite/src/Collider.cpp
index 1929b39a58e7..ca36d4550a8f 100644
--- a/thirdparty/graphite/src/Collider.cpp
+++ b/thirdparty/graphite/src/Collider.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <algorithm>
 #include <limits>
 #include <cmath>
diff --git a/thirdparty/graphite/src/Decompressor.cpp b/thirdparty/graphite/src/Decompressor.cpp
index 42dc9113e546..f9f1e28e5ba7 100644
--- a/thirdparty/graphite/src/Decompressor.cpp
+++ b/thirdparty/graphite/src/Decompressor.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2015, SIL International, All rights reserved.
 
-    Copyright 2015, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <cassert>
 
 #include "inc/Decompressor.h"
diff --git a/thirdparty/graphite/src/Face.cpp b/thirdparty/graphite/src/Face.cpp
index 3e106050d7de..4dd5a780cf48 100644
--- a/thirdparty/graphite/src/Face.cpp
+++ b/thirdparty/graphite/src/Face.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <cstring>
 #include "graphite2/Segment.h"
 #include "inc/CmapCache.h"
diff --git a/thirdparty/graphite/src/FeatureMap.cpp b/thirdparty/graphite/src/FeatureMap.cpp
index 014a88fd08e0..992be055407f 100644
--- a/thirdparty/graphite/src/FeatureMap.cpp
+++ b/thirdparty/graphite/src/FeatureMap.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <cstring>
 
 #include "inc/Main.h"
diff --git a/thirdparty/graphite/src/FileFace.cpp b/thirdparty/graphite/src/FileFace.cpp
index 7e663876a741..2e4104468899 100644
--- a/thirdparty/graphite/src/FileFace.cpp
+++ b/thirdparty/graphite/src/FileFace.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2012, SIL International, All rights reserved.
 
-    Copyright 2012, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <cstring>
 #include "inc/FileFace.h"
 
diff --git a/thirdparty/graphite/src/Font.cpp b/thirdparty/graphite/src/Font.cpp
index faf3715f9d8e..bffb4223d58b 100644
--- a/thirdparty/graphite/src/Font.cpp
+++ b/thirdparty/graphite/src/Font.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "inc/Face.h"
 #include "inc/Font.h"
 #include "inc/GlyphCache.h"
diff --git a/thirdparty/graphite/src/GlyphCache.cpp b/thirdparty/graphite/src/GlyphCache.cpp
index 282bdc18fd6d..30479bdc4dfa 100644
--- a/thirdparty/graphite/src/GlyphCache.cpp
+++ b/thirdparty/graphite/src/GlyphCache.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2012, SIL International, All rights reserved.
 
-    Copyright 2012, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "graphite2/Font.h"
 
 #include "inc/Main.h"
@@ -44,12 +21,18 @@ namespace
     // variable length structures.
 
     template<typename W>
-    class _glat_iterator : public std::iterator<std::input_iterator_tag, std::pair<sparse::key_type, sparse::mapped_type> >
+    class _glat_iterator
     {
         unsigned short  key() const             { return uint16(be::peek<W>(_e) + _n); }
         unsigned int    run() const             { return be::peek<W>(_e+sizeof(W)); }
         void            advance_entry()         { _n = 0; _e = _v; be::skip<W>(_v,2); }
     public:
+        using iterator_category = std::input_iterator_tag;
+        using value_type = std::pair<sparse::key_type, sparse::mapped_type>;
+        using difference_type = ptrdiff_t;
+        using pointer = value_type *;
+        using reference = value_type &;
+
         _glat_iterator(const void * glat=0) : _e(reinterpret_cast<const byte *>(glat)), _v(_e+2*sizeof(W)), _n(0) {}
 
         _glat_iterator<W> & operator ++ () {
diff --git a/thirdparty/graphite/src/GlyphFace.cpp b/thirdparty/graphite/src/GlyphFace.cpp
index bc5e63a9f0ce..d9408f556b18 100644
--- a/thirdparty/graphite/src/GlyphFace.cpp
+++ b/thirdparty/graphite/src/GlyphFace.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "inc/GlyphFace.h"
 
 
diff --git a/thirdparty/graphite/src/Intervals.cpp b/thirdparty/graphite/src/Intervals.cpp
index 0fe99a127a89..b223a67f563c 100644
--- a/thirdparty/graphite/src/Intervals.cpp
+++ b/thirdparty/graphite/src/Intervals.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <algorithm>
 #include <cmath>
 #include <limits>
diff --git a/thirdparty/graphite/src/Justifier.cpp b/thirdparty/graphite/src/Justifier.cpp
index 78c11e6a5167..0bb18225b946 100644
--- a/thirdparty/graphite/src/Justifier.cpp
+++ b/thirdparty/graphite/src/Justifier.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2012, SIL International, All rights reserved.
 
-    Copyright 2012, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 
 #include "inc/Segment.h"
 #include "graphite2/Font.h"
diff --git a/thirdparty/graphite/src/NameTable.cpp b/thirdparty/graphite/src/NameTable.cpp
index d42b7f95bdc0..85892f179c31 100644
--- a/thirdparty/graphite/src/NameTable.cpp
+++ b/thirdparty/graphite/src/NameTable.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "inc/Main.h"
 #include "inc/Endian.h"
 
diff --git a/thirdparty/graphite/src/Pass.cpp b/thirdparty/graphite/src/Pass.cpp
index 47ae2064f72c..986fed83b164 100644
--- a/thirdparty/graphite/src/Pass.cpp
+++ b/thirdparty/graphite/src/Pass.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "inc/Main.h"
 #include "inc/debug.h"
 #include "inc/Endian.h"
@@ -194,7 +171,7 @@ bool Pass::readPass(const byte * const pass_start, size_t pass_length, size_t su
         m_cPConstraint = vm::Machine::Code(true, pcCode, pcCode + pass_constraint_len,
                                   precontext[0], be::peek<uint16>(sort_keys), *m_silf, face, PASS_TYPE_UNKNOWN);
         if (e.test(!m_cPConstraint, E_OUTOFMEM)
-                || e.test(m_cPConstraint.status() != Code::loaded, m_cPConstraint.status() + E_CODEFAILURE))
+                || e.test(m_cPConstraint.status() != Code::loaded, int(m_cPConstraint.status()) + E_CODEFAILURE))
             return face.error(e);
         face.error_context(face.error_context() - 1);
     }
@@ -266,8 +243,8 @@ bool Pass::readRules(const byte * rule_map, const size_t num_entries,
         r->constraint = new (m_codes+n*2-1) vm::Machine::Code(true,  rc_begin, rc_end, r->preContext, r->sort, *m_silf, face, pt, &prog_pool_free);
 
         if (e.test(!r->action || !r->constraint, E_OUTOFMEM)
-                || e.test(r->action->status() != Code::loaded, r->action->status() + E_CODEFAILURE)
-                || e.test(r->constraint->status() != Code::loaded, r->constraint->status() + E_CODEFAILURE)
+                || e.test(r->action->status() != Code::loaded, int(r->action->status()) + E_CODEFAILURE)
+                || e.test(r->constraint->status() != Code::loaded, int(r->constraint->status()) + E_CODEFAILURE)
                 || e.test(!r->constraint->immutable(), E_MUTABLECCODE))
             return face.error(e);
     }
diff --git a/thirdparty/graphite/src/Position.cpp b/thirdparty/graphite/src/Position.cpp
index d2fdbd4e7c16..a727f6166493 100644
--- a/thirdparty/graphite/src/Position.cpp
+++ b/thirdparty/graphite/src/Position.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "inc/Position.h"
 #include <cmath>
 
diff --git a/thirdparty/graphite/src/Segment.cpp b/thirdparty/graphite/src/Segment.cpp
index 62edd4250ffa..7bb3d132fa26 100644
--- a/thirdparty/graphite/src/Segment.cpp
+++ b/thirdparty/graphite/src/Segment.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "inc/UtfCodec.h"
 #include <cstring>
 #include <cstdlib>
diff --git a/thirdparty/graphite/src/Silf.cpp b/thirdparty/graphite/src/Silf.cpp
index 44d3c96171d2..51a74736277c 100644
--- a/thirdparty/graphite/src/Silf.cpp
+++ b/thirdparty/graphite/src/Silf.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <cstdlib>
 #include "graphite2/Segment.h"
 #include "inc/debug.h"
diff --git a/thirdparty/graphite/src/Slot.cpp b/thirdparty/graphite/src/Slot.cpp
index 0fdb0989526a..040e90d109a5 100644
--- a/thirdparty/graphite/src/Slot.cpp
+++ b/thirdparty/graphite/src/Slot.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "inc/Segment.h"
 #include "inc/Slot.h"
 #include "inc/Silf.h"
diff --git a/thirdparty/graphite/src/Sparse.cpp b/thirdparty/graphite/src/Sparse.cpp
index aa43113669b7..746dfc95225a 100644
--- a/thirdparty/graphite/src/Sparse.cpp
+++ b/thirdparty/graphite/src/Sparse.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2011, SIL International, All rights reserved.
 
-    Copyright 2011, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <cassert>
 #include "inc/Sparse.h"
 #include "inc/bits.h"
diff --git a/thirdparty/graphite/src/TtfUtil.cpp b/thirdparty/graphite/src/TtfUtil.cpp
index 2eb46a11fb38..47940112ee9e 100644
--- a/thirdparty/graphite/src/TtfUtil.cpp
+++ b/thirdparty/graphite/src/TtfUtil.cpp
@@ -1,39 +1,14 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
-/*--------------------------------------------------------------------*//*:Ignore this sentence.
-
-File: TtfUtil.cpp
+/*
 Responsibility: Alan Ward
 Last reviewed: Not yet.
 
 Description
     Implements the methods for TtfUtil class. This file should remain portable to any C++
     environment by only using standard C++ and the TTF structurs defined in Tt.h.
--------------------------------------------------------------------------------*//*:End Ignore*/
+*/
 
 
 /***********************************************************************************************
diff --git a/thirdparty/graphite/src/UtfCodec.cpp b/thirdparty/graphite/src/UtfCodec.cpp
index a944bbf9d082..9156bad00f1c 100644
--- a/thirdparty/graphite/src/UtfCodec.cpp
+++ b/thirdparty/graphite/src/UtfCodec.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "inc/UtfCodec.h"
 //using namespace graphite2;
 
diff --git a/thirdparty/graphite/src/call_machine.cpp b/thirdparty/graphite/src/call_machine.cpp
index fcd8a0c2c17e..7d9d1ef315f7 100644
--- a/thirdparty/graphite/src/call_machine.cpp
+++ b/thirdparty/graphite/src/call_machine.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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 call threaded interpreter implmentation for machine.h
 // Author: Tim Eves
 
diff --git a/thirdparty/graphite/src/direct_machine.cpp b/thirdparty/graphite/src/direct_machine.cpp
index 86206cfe37be..e3a28fa5364f 100644
--- a/thirdparty/graphite/src/direct_machine.cpp
+++ b/thirdparty/graphite/src/direct_machine.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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 direct threaded interpreter implmentation for machine.h
 // Author: Tim Eves
 
diff --git a/thirdparty/graphite/src/gr_char_info.cpp b/thirdparty/graphite/src/gr_char_info.cpp
index 612f9ba694f2..1345fae847b9 100644
--- a/thirdparty/graphite/src/gr_char_info.cpp
+++ b/thirdparty/graphite/src/gr_char_info.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <cassert>
 #include "graphite2/Segment.h"
 #include "inc/CharInfo.h"
diff --git a/thirdparty/graphite/src/gr_face.cpp b/thirdparty/graphite/src/gr_face.cpp
index baa469727bbc..6e8003611371 100644
--- a/thirdparty/graphite/src/gr_face.cpp
+++ b/thirdparty/graphite/src/gr_face.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "graphite2/Font.h"
 #include "inc/Face.h"
 #include "inc/FileFace.h"
diff --git a/thirdparty/graphite/src/gr_features.cpp b/thirdparty/graphite/src/gr_features.cpp
index a560e053f2e3..67208f14e676 100644
--- a/thirdparty/graphite/src/gr_features.cpp
+++ b/thirdparty/graphite/src/gr_features.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "graphite2/Font.h"
 #include "inc/Face.h"
 #include "inc/FeatureMap.h"
diff --git a/thirdparty/graphite/src/gr_font.cpp b/thirdparty/graphite/src/gr_font.cpp
index 724cc83c1386..fc85112e24fa 100644
--- a/thirdparty/graphite/src/gr_font.cpp
+++ b/thirdparty/graphite/src/gr_font.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "graphite2/Font.h"
 #include "inc/Font.h"
 
diff --git a/thirdparty/graphite/src/gr_logging.cpp b/thirdparty/graphite/src/gr_logging.cpp
index 8f1e675e6286..c6f03fd616e7 100644
--- a/thirdparty/graphite/src/gr_logging.cpp
+++ b/thirdparty/graphite/src/gr_logging.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include <cstdio>
 
 #include "graphite2/Log.h"
diff --git a/thirdparty/graphite/src/gr_segment.cpp b/thirdparty/graphite/src/gr_segment.cpp
index 7a27e9c562eb..7592296c043c 100644
--- a/thirdparty/graphite/src/gr_segment.cpp
+++ b/thirdparty/graphite/src/gr_segment.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "graphite2/Segment.h"
 #include "inc/UtfCodec.h"
 #include "inc/Segment.h"
diff --git a/thirdparty/graphite/src/gr_slot.cpp b/thirdparty/graphite/src/gr_slot.cpp
index a3c6b46a7f4d..a6adefec610a 100644
--- a/thirdparty/graphite/src/gr_slot.cpp
+++ b/thirdparty/graphite/src/gr_slot.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #include "graphite2/Segment.h"
 #include "inc/Segment.h"
 #include "inc/Slot.h"
diff --git a/thirdparty/graphite/src/inc/CharInfo.h b/thirdparty/graphite/src/inc/CharInfo.h
index 01e7e31ac936..0fbfefda4dda 100644
--- a/thirdparty/graphite/src/inc/CharInfo.h
+++ b/thirdparty/graphite/src/inc/CharInfo.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 #include "inc/Main.h"
 
diff --git a/thirdparty/graphite/src/inc/CmapCache.h b/thirdparty/graphite/src/inc/CmapCache.h
index 7820c958b0ef..b18ce2929b93 100644
--- a/thirdparty/graphite/src/inc/CmapCache.h
+++ b/thirdparty/graphite/src/inc/CmapCache.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include "inc/Main.h"
diff --git a/thirdparty/graphite/src/inc/Code.h b/thirdparty/graphite/src/inc/Code.h
index 3cee67c81d38..24e92e429d34 100644
--- a/thirdparty/graphite/src/inc/Code.h
+++ b/thirdparty/graphite/src/inc/Code.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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 class represents loaded graphite stack machine code.  It performs
 // basic sanity checks, on the incoming code to prevent more obvious problems
 // from crashing graphite.
diff --git a/thirdparty/graphite/src/inc/Collider.h b/thirdparty/graphite/src/inc/Collider.h
index 71e8400501f9..3a922660d408 100644
--- a/thirdparty/graphite/src/inc/Collider.h
+++ b/thirdparty/graphite/src/inc/Collider.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include "inc/List.h"
diff --git a/thirdparty/graphite/src/inc/Compression.h b/thirdparty/graphite/src/inc/Compression.h
index 9fe10e025d62..4f5193b93110 100644
--- a/thirdparty/graphite/src/inc/Compression.h
+++ b/thirdparty/graphite/src/inc/Compression.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2015, SIL International, All rights reserved.
 
-    Copyright 2015, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 
 #pragma once
 
diff --git a/thirdparty/graphite/src/inc/Decompressor.h b/thirdparty/graphite/src/inc/Decompressor.h
index 10f21b7af18f..1113e004c125 100644
--- a/thirdparty/graphite/src/inc/Decompressor.h
+++ b/thirdparty/graphite/src/inc/Decompressor.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2015, SIL International, All rights reserved.
 
-    Copyright 2015, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 
 #pragma once
 
diff --git a/thirdparty/graphite/src/inc/Endian.h b/thirdparty/graphite/src/inc/Endian.h
index 56ecfd86671a..7bd201f92bee 100644
--- a/thirdparty/graphite/src/inc/Endian.h
+++ b/thirdparty/graphite/src/inc/Endian.h
@@ -1,30 +1,5 @@
-/*  GRAPHITE2 LICENSING
-
-    Copyright 2011, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
-
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2011, SIL International, All rights reserved.
 /*
 Description:
     A set of fast template based decoders for decoding values of any C integer
diff --git a/thirdparty/graphite/src/inc/Error.h b/thirdparty/graphite/src/inc/Error.h
index 2b7ab763a245..7e14c8e75435 100644
--- a/thirdparty/graphite/src/inc/Error.h
+++ b/thirdparty/graphite/src/inc/Error.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2013, SIL International, All rights reserved.
 
-    Copyright 2013, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 // numbers are explicitly assigned for future proofing
@@ -38,7 +15,7 @@ public:
     operator bool() { return (_e != 0); }
     int error() { return _e; }
     void error(int e) { _e = e; }
-    bool test(bool pr, int err) { return (_e = int(pr) * err); }
+    bool test(bool pr, int err) { return (_e = pr ? err : 0); }
 
 private:
     int _e;
@@ -56,7 +33,7 @@ enum errcontext {
     EC_ARULEMAP = 9         // in Silf %d, pass %d, state %d
 };
 
-enum errors {
+enum error {
     E_OUTOFMEM = 1,         // Out of memory
     E_NOGLYPHS = 2,         // There are no glyphs in the font
     E_BADUPEM = 3,          // The units per em for the font is bad (0)
@@ -125,7 +102,7 @@ enum errors {
     E_BADJUMPCODE = 65,     // Code jumps past end of op codes
     E_CODEBADARGS = 66,     // Code arguments exhausted
     E_CODENORETURN = 67,    // Missing return type op code at end of code
-    E_CODENESTEDCTXT = 68,   // Nested context encountered in code
+    E_CODENESTEDCTXT = 68,  // Nested context encountered in code
 // Compression errors
     E_BADSCHEME = 69,
     E_SHRINKERFAILED = 70,
diff --git a/thirdparty/graphite/src/inc/Face.h b/thirdparty/graphite/src/inc/Face.h
index 355c5aa0d339..fac7fd4b8eb9 100644
--- a/thirdparty/graphite/src/inc/Face.h
+++ b/thirdparty/graphite/src/inc/Face.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include <cstdio>
diff --git a/thirdparty/graphite/src/inc/FeatureMap.h b/thirdparty/graphite/src/inc/FeatureMap.h
index 0f05e941a27d..a98008f73846 100644
--- a/thirdparty/graphite/src/inc/FeatureMap.h
+++ b/thirdparty/graphite/src/inc/FeatureMap.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 #include "inc/Main.h"
 #include "inc/FeatureVal.h"
diff --git a/thirdparty/graphite/src/inc/FeatureVal.h b/thirdparty/graphite/src/inc/FeatureVal.h
index cd3f93b2b587..35397f0f3bf1 100644
--- a/thirdparty/graphite/src/inc/FeatureVal.h
+++ b/thirdparty/graphite/src/inc/FeatureVal.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 #include <cstring>
 #include <cassert>
diff --git a/thirdparty/graphite/src/inc/FileFace.h b/thirdparty/graphite/src/inc/FileFace.h
index 35927847f8f7..521942ee855f 100644
--- a/thirdparty/graphite/src/inc/FileFace.h
+++ b/thirdparty/graphite/src/inc/FileFace.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2012, SIL International, All rights reserved.
 
-    Copyright 2012, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 //#include "inc/FeatureMap.h"
diff --git a/thirdparty/graphite/src/inc/Font.h b/thirdparty/graphite/src/inc/Font.h
index 9bc9ffb510c3..537ad9de0ef5 100644
--- a/thirdparty/graphite/src/inc/Font.h
+++ b/thirdparty/graphite/src/inc/Font.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 #include <cassert>
 #include "graphite2/Font.h"
diff --git a/thirdparty/graphite/src/inc/GlyphCache.h b/thirdparty/graphite/src/inc/GlyphCache.h
index 7d5324e5224e..5f6d3eea1812 100644
--- a/thirdparty/graphite/src/inc/GlyphCache.h
+++ b/thirdparty/graphite/src/inc/GlyphCache.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2012, SIL International, All rights reserved.
 
-    Copyright 2012, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 
diff --git a/thirdparty/graphite/src/inc/GlyphFace.h b/thirdparty/graphite/src/inc/GlyphFace.h
index fc29056146cf..f964c0581a0e 100644
--- a/thirdparty/graphite/src/inc/GlyphFace.h
+++ b/thirdparty/graphite/src/inc/GlyphFace.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include "inc/Main.h"
diff --git a/thirdparty/graphite/src/inc/Intervals.h b/thirdparty/graphite/src/inc/Intervals.h
index 81d23187b60d..15427d428a7d 100644
--- a/thirdparty/graphite/src/inc/Intervals.h
+++ b/thirdparty/graphite/src/inc/Intervals.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include <utility>
diff --git a/thirdparty/graphite/src/inc/List.h b/thirdparty/graphite/src/inc/List.h
index a3b7a779617a..3a36c17a7a53 100644
--- a/thirdparty/graphite/src/inc/List.h
+++ b/thirdparty/graphite/src/inc/List.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 
 // designed to have a limited subset of the std::vector api
 #pragma once
diff --git a/thirdparty/graphite/src/inc/Machine.h b/thirdparty/graphite/src/inc/Machine.h
index b23819fb9816..5ceedc296d8c 100644
--- a/thirdparty/graphite/src/inc/Machine.h
+++ b/thirdparty/graphite/src/inc/Machine.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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 general interpreter interface.
 // Author: Tim Eves
 
diff --git a/thirdparty/graphite/src/inc/Main.h b/thirdparty/graphite/src/inc/Main.h
index ebf02dd5533b..6a412efeca4e 100644
--- a/thirdparty/graphite/src/inc/Main.h
+++ b/thirdparty/graphite/src/inc/Main.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include <cstdlib>
diff --git a/thirdparty/graphite/src/inc/NameTable.h b/thirdparty/graphite/src/inc/NameTable.h
index 0fdbeb4d85f8..5a7913ddc56a 100644
--- a/thirdparty/graphite/src/inc/NameTable.h
+++ b/thirdparty/graphite/src/inc/NameTable.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include <graphite2/Segment.h>
diff --git a/thirdparty/graphite/src/inc/Pass.h b/thirdparty/graphite/src/inc/Pass.h
index e687a87d8c2f..fb507e6a04c6 100644
--- a/thirdparty/graphite/src/inc/Pass.h
+++ b/thirdparty/graphite/src/inc/Pass.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include <cstdlib>
diff --git a/thirdparty/graphite/src/inc/Position.h b/thirdparty/graphite/src/inc/Position.h
index 510e4f4c41d5..554acc411e72 100644
--- a/thirdparty/graphite/src/inc/Position.h
+++ b/thirdparty/graphite/src/inc/Position.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 namespace graphite2 {
diff --git a/thirdparty/graphite/src/inc/Rule.h b/thirdparty/graphite/src/inc/Rule.h
index 5964e003a6ae..09025dc799bc 100644
--- a/thirdparty/graphite/src/inc/Rule.h
+++ b/thirdparty/graphite/src/inc/Rule.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2011, SIL International, All rights reserved.
 
-    Copyright 2011, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 
 #pragma once
 
diff --git a/thirdparty/graphite/src/inc/Segment.h b/thirdparty/graphite/src/inc/Segment.h
index 6cf83408d4d7..a3a8eef6485e 100644
--- a/thirdparty/graphite/src/inc/Segment.h
+++ b/thirdparty/graphite/src/inc/Segment.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include "inc/Main.h"
diff --git a/thirdparty/graphite/src/inc/Silf.h b/thirdparty/graphite/src/inc/Silf.h
index edc0c3a16d83..6fe2aaef1f3f 100644
--- a/thirdparty/graphite/src/inc/Silf.h
+++ b/thirdparty/graphite/src/inc/Silf.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include "graphite2/Font.h"
diff --git a/thirdparty/graphite/src/inc/Slot.h b/thirdparty/graphite/src/inc/Slot.h
index df39d9a3bbea..0d8571d33613 100644
--- a/thirdparty/graphite/src/inc/Slot.h
+++ b/thirdparty/graphite/src/inc/Slot.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include "graphite2/Types.h"
diff --git a/thirdparty/graphite/src/inc/Sparse.h b/thirdparty/graphite/src/inc/Sparse.h
index fcda890171b1..3c5d33ae5d18 100644
--- a/thirdparty/graphite/src/inc/Sparse.h
+++ b/thirdparty/graphite/src/inc/Sparse.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2011, SIL International, All rights reserved.
 
-    Copyright 2011, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 #include <iterator>
 #include <utility>
diff --git a/thirdparty/graphite/src/inc/TtfTypes.h b/thirdparty/graphite/src/inc/TtfTypes.h
index ae67915304ee..e4fd49f9434a 100644
--- a/thirdparty/graphite/src/inc/TtfTypes.h
+++ b/thirdparty/graphite/src/inc/TtfTypes.h
@@ -1,39 +1,14 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
-/*--------------------------------------------------------------------*//*:Ignore this sentence.
-
-File: TtfTypes.h
+/*
 Responsibility: Tim Eves
 Last reviewed: Not yet.
 
 Description:
 Provides types required to represent the TTF basic types.
--------------------------------------------------------------------------------*//*:End Ignore*/
+*/
 
 
 //**********************************************************************************************
diff --git a/thirdparty/graphite/src/inc/TtfUtil.h b/thirdparty/graphite/src/inc/TtfUtil.h
index 3952bc06fb19..1ccab42fb85f 100644
--- a/thirdparty/graphite/src/inc/TtfUtil.h
+++ b/thirdparty/graphite/src/inc/TtfUtil.h
@@ -1,39 +1,13 @@
-/*  GRAPHITE2 LICENSING
-
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
-#pragma once
-/*--------------------------------------------------------------------*//*:Ignore this sentence.
-
-File: TtfUtil.h
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
+/*
 Responsibility: Alan Ward
 Last reviewed: Not yet.
 
 Description:
     Utility class for handling TrueType font files.
-----------------------------------------------------------------------------------------------*/
+*/
+#pragma once
 
 
 #include <cstddef>
diff --git a/thirdparty/graphite/src/inc/UtfCodec.h b/thirdparty/graphite/src/inc/UtfCodec.h
index 24a343d8d999..bab652c11991 100644
--- a/thirdparty/graphite/src/inc/UtfCodec.h
+++ b/thirdparty/graphite/src/inc/UtfCodec.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2011, SIL International, All rights reserved.
 
-    Copyright 2011, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 #include <cstdlib>
diff --git a/thirdparty/graphite/src/inc/bits.h b/thirdparty/graphite/src/inc/bits.h
index 9365986a10cf..168ff256d37d 100644
--- a/thirdparty/graphite/src/inc/bits.h
+++ b/thirdparty/graphite/src/inc/bits.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2012, SIL International, All rights reserved.
 
-    Copyright 2012, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 
 namespace graphite2
diff --git a/thirdparty/graphite/src/inc/debug.h b/thirdparty/graphite/src/inc/debug.h
index 97175eb2cc47..5b9c63872bc1 100644
--- a/thirdparty/graphite/src/inc/debug.h
+++ b/thirdparty/graphite/src/inc/debug.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2011, SIL International, All rights reserved.
 
-    Copyright 2011, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 //  debug.h
 //
 //  Created on: 22 Dec 2011
diff --git a/thirdparty/graphite/src/inc/json.h b/thirdparty/graphite/src/inc/json.h
index 554cd9a3d19d..72011ef1989e 100644
--- a/thirdparty/graphite/src/inc/json.h
+++ b/thirdparty/graphite/src/inc/json.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2011, SIL International, All rights reserved.
 
-    Copyright 2011, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 // JSON pretty printer for graphite font debug output logging.
 // Created on: 15 Dec 2011
 //     Author: Tim Eves
diff --git a/thirdparty/graphite/src/inc/locale2lcid.h b/thirdparty/graphite/src/inc/locale2lcid.h
index 25d5c0a3c8f9..e591c42b28e2 100644
--- a/thirdparty/graphite/src/inc/locale2lcid.h
+++ b/thirdparty/graphite/src/inc/locale2lcid.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 #include <cstring>
 #include <cassert>
diff --git a/thirdparty/graphite/src/inc/opcode_table.h b/thirdparty/graphite/src/inc/opcode_table.h
index cb5acde9a47e..01a84831bc61 100644
--- a/thirdparty/graphite/src/inc/opcode_table.h
+++ b/thirdparty/graphite/src/inc/opcode_table.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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 file will be pulled into and integrated into a machine implmentation
 // DO NOT build directly
 #pragma once
diff --git a/thirdparty/graphite/src/inc/opcodes.h b/thirdparty/graphite/src/inc/opcodes.h
index ff2f1741e2ff..10ba1772298b 100644
--- a/thirdparty/graphite/src/inc/opcodes.h
+++ b/thirdparty/graphite/src/inc/opcodes.h
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2010, SIL International, All rights reserved.
 
-    Copyright 2010, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 #pragma once
 // This file will be pulled into and integrated into a machine implmentation
 // DO NOT build directly and under no circumstances ever #include headers in
diff --git a/thirdparty/graphite/src/json.cpp b/thirdparty/graphite/src/json.cpp
index 25f2190f71af..7990654eb8a6 100644
--- a/thirdparty/graphite/src/json.cpp
+++ b/thirdparty/graphite/src/json.cpp
@@ -1,29 +1,6 @@
-/*  GRAPHITE2 LICENSING
+// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
+// Copyright 2011, SIL International, All rights reserved.
 
-    Copyright 2011, SIL International
-    All rights reserved.
-
-    This library is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published
-    by the Free Software Foundation; either version 2.1 of 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
-    Lesser General Public License for more details.
-
-    You should also have received a copy of the GNU Lesser General Public
-    License along with this library in the file named "LICENSE".
-    If not, write to the Free Software Foundation, 51 Franklin Street,
-    Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
-    internet at http://www.fsf.org/licenses/lgpl.html.
-
-Alternatively, the contents of this file may be used under the terms of the
-Mozilla Public License (http://mozilla.org/MPL) or 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.
-*/
 // JSON debug logging
 // Author: Tim Eves