Fix copyright notice, clarify version requirement comment

Signed-off-by: Kimball Thurston <kdt3rd@gmail.com>

CMakeLists.txt

@@ -1,5 +1,8 @@
-# "More Modern" CMake version
+# We require this to get object library link library support and
+# combined python 2 + 3 support
 
+# We require this to get object library link library support and
+# combined python 2 + 3 support
 cmake_minimum_required(VERSION 3.12)
 
 # Hint: This can be set to enable custom find_package

IlmBase/CMakeLists.txt

@@ -1,4 +1,8 @@
-# "More Modern" CMake version
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
+# We require this to get object library link library support and
+# combined python 2 + 3 support
 cmake_minimum_required(VERSION 3.12)
 
 # we include this first to parse configure.ac and extract the version

IlmBase/Half/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(eLut eLut.cpp)
 target_compile_features(eLut PUBLIC cxx_std_${OPENEXR_CXX_STANDARD})

IlmBase/HalfTest/CMakeLists.txt

@@ -1,7 +1,5 @@
-##
-## SPDX-License-Identifier: BSD-3-Clause
-## Copyright Contributors to the OpenEXR Project.
-##
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(HalfTest
   main.cpp

IlmBase/Iex/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 ilmbase_define_library(Iex
   PRIV_EXPORT IEX_EXPORTS
   CURDIR ${CMAKE_CURRENT_SOURCE_DIR}

IlmBase/IexMath/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 ilmbase_define_library(IexMath
   PRIV_EXPORT IEXMATH_EXPORTS
   CURDIR ${CMAKE_CURRENT_SOURCE_DIR}

IlmBase/IexTest/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 add_executable(IexTest
   main.cpp
   testBaseExc.cpp

IlmBase/IlmThread/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 ilmbase_define_library(IlmThread
   PRIV_EXPORT ILMTHREAD_EXPORTS
   CURDIR ${CMAKE_CURRENT_SOURCE_DIR}

IlmBase/Imath/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 ilmbase_define_library(Imath
   PRIV_EXPORT IMATH_EXPORTS
   CURDIR ${CMAKE_CURRENT_SOURCE_DIR}

IlmBase/ImathTest/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(ImathTest 
   main.cpp

IlmBase/config/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 include(CheckIncludeFiles)
 include(CheckSymbolExists)

IlmBase/config/IlmBaseConfig.h.in

@@ -1,8 +1,13 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright Contributors to the OpenEXR Project.
+
 // This file is auto-generated by the configure step
 
 #ifndef INCLUDED_ILMBASE_CONFIG_H
 #define INCLUDED_ILMBASE_CONFIG_H 1
 
+#pragma once
+
 //
 // Define and set to 1 if the target system has c++11/14 support
 // and you want IlmBase to NOT use it's features

IlmBase/config/IlmBaseConfig.h.in_cmake

@@ -1,8 +1,13 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright Contributors to the OpenEXR Project.
+
 // This file is auto-generated by the cmake configure step
 
 #ifndef INCLUDED_ILMBASE_CONFIG_H
 #define INCLUDED_ILMBASE_CONFIG_H 1
 
+#pragma once
+
 //
 // Options / configuration based on O.S. / compiler
 /////////////////////

IlmBase/config/IlmBaseConfigInternal.h.in

@@ -3,11 +3,11 @@
 // Copyright Contributors to the OpenEXR Project.
 //
 
+#pragma once
 
 //
 // Dealing with FPEs
 //
 #undef HAVE_UCONTEXT_H
 
 #undef ILMBASE_HAVE_CONTROL_REGISTER_SUPPORT
-

IlmBase/config/IlmBaseConfigInternal.h.in_cmake

@@ -1,3 +1,7 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright Contributors to the OpenEXR Project.
+
+#pragma once
 
 //
 // Dealing with FPEs

IlmBase/config/IlmBaseSetup.cmake

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 include(GNUInstallDirs)
 

IlmBase/config/LibraryDefine.cmake

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 # NB: This function has a number if IlmBase specific names / variables
 # in it, so be careful copying...
 function(ILMBASE_DEFINE_LIBRARY libname)

IlmBase/config/ParseConfigure.cmake

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 file(READ configure.ac CONFIGURE_AC_CONTENTS)
 string(REGEX MATCH "AC_INIT\\(IlmBase,[ ]*([0-9]+).([0-9]+).([0-9]+)" DUMMY ${CONFIGURE_AC_CONTENTS})

OpenEXR/CMakeLists.txt

@@ -1,4 +1,8 @@
-# "More Modern" CMake version
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
+# We require this to get object library link library support and
+# combined python 2 + 3 support
 cmake_minimum_required(VERSION 3.12)
 
 # we include this first to parse configure.ac and extract the version

OpenEXR/IlmImf/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 add_executable(b44ExpLogTable b44ExpLogTable.cpp)
 target_link_libraries(b44ExpLogTable PRIVATE OpenEXR::Config IlmBase::Half IlmBase::IlmThread IlmBase::Iex)
 # TODO: Old file had logic to skip these if the file already exists

OpenEXR/IlmImfExamples/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(IlmImfExamples
   drawImage.cpp

OpenEXR/IlmImfFuzzTest/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 add_executable( IlmImfFuzzTest
   fuzzFile.cpp
   main.cpp

OpenEXR/IlmImfTest/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 add_executable(IlmImfTest
   compareB44.cpp
   compareDwa.cpp

OpenEXR/IlmImfUtil/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 openexr_define_library(IlmImfUtil
   PRIV_EXPORT ILMIMFUTIL_EXPORTS

OpenEXR/IlmImfUtilTest/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 add_executable(IlmImfUtilTest
   main.cpp
   testFlatImage.cpp

OpenEXR/config/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 include(CheckIncludeFiles)
 include(CheckSymbolExists)

OpenEXR/config/LibraryDefine.cmake

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 # NB: This function has a number of specific names / variables
 # in it, so be careful copying...
 function(OPENEXR_DEFINE_LIBRARY libname)

OpenEXR/config/OpenEXRConfig.h.in

@@ -1,8 +1,13 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright Contributors to the OpenEXR Project.
+
 // This file is auto-generated by the configure step
 
 #ifndef INCLUDED_OPENEXR_CONFIG_H
 #define INCLUDED_OPENEXR_CONFIG_H 1
 
+#pragma once
+
 //
 // Current internal library namepace name
 //

OpenEXR/config/OpenEXRConfig.h.in_cmake

@@ -1,8 +1,13 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright Contributors to the OpenEXR Project.
+
 // This file is auto-generated by the configure step
 
 #ifndef INCLUDED_OPENEXR_CONFIG_H
 #define INCLUDED_OPENEXR_CONFIG_H 1
 
+#pragma once
+
 //
 // Current internal library namepace name
 //

OpenEXR/config/OpenEXRConfigInternal.h.in

@@ -1,3 +1,8 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright Contributors to the OpenEXR Project.
+
+#pragma once
+
 //
 // SPDX-License-Identifier: BSD-3-Clause
 // Copyright Contributors to the OpenEXR Project.

OpenEXR/config/OpenEXRConfigInternal.h.in_cmake

@@ -1,8 +1,13 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright Contributors to the OpenEXR Project.
+
 // This file is auto-generated by the configure step
 
 #ifndef INCLUDED_OPENEXR_INTERNAL_CONFIG_H
 #define INCLUDED_OPENEXR_INTERNAL_CONFIG_H 1
 
+#pragma once
+
 //
 // Define and set to 1 if the target system supports a proc filesystem
 // compatible with the Linux kernel's proc filesystem.  Note that this

OpenEXR/config/OpenEXRSetup.cmake

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 include(GNUInstallDirs)
 

OpenEXR/config/ParseConfigure.cmake

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 file(READ configure.ac CONFIGURE_AC_CONTENTS)
 string(REGEX MATCH "AC_INIT\\(OpenEXR,[ ]*([0-9]+).([0-9]+).([0-9]+)" DUMMY ${CONFIGURE_AC_CONTENTS})

OpenEXR/doc/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 install(
   FILES

OpenEXR/exr2aces/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(exr2aces main.cpp)
 target_link_libraries(exr2aces OpenEXR::IlmImf)

OpenEXR/exrenvmap/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable( exrenvmap
   makeLatLongMap.cpp

OpenEXR/exrheader/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(exrheader main.cpp)
 target_link_libraries(exrheader OpenEXR::IlmImf)

OpenEXR/exrmakepreview/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(exrmakepreview
   main.cpp

OpenEXR/exrmaketiled/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(exrmaketiled 
   makeTiled.cpp

OpenEXR/exrmultipart/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(exrmultipart exrmultipart.cpp)
 target_link_libraries(exrmultipart OpenEXR::IlmImf)

OpenEXR/exrmultiview/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(exrmultiview
   makeMultiView.cpp

OpenEXR/exrstdattr/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 add_executable(exrstdattr main.cpp)
 target_link_libraries(exrstdattr OpenEXR::IlmImf)

OpenEXR_Viewers/CMakeLists.txt

@@ -1,4 +1,8 @@
-# "More Modern" CMake version
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
+# We require this to get object library link library support and
+# combined python 2 + 3 support
 cmake_minimum_required(VERSION 3.12)
 
 set(OPENEXR_VIEWERS_VERSION 2.3.0)

PyIlmBase/CMakeLists.txt

@@ -1,4 +1,8 @@
-# "More Modern" CMake version
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
+# We require this to get object library link library support and
+# combined python 2 + 3 support
 cmake_minimum_required(VERSION 3.12)
 
 # we include this first to parse configure.ac and extract the version

PyIlmBase/PyIex/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 pyilmbase_define_module(iex
   LIBNAME PyIex
   PRIV_EXPORT PYIEX_BUILD

PyIlmBase/PyIexTest/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 if(TARGET Python2::Interpreter)
   add_test(PyIlmBase.PyIexTest_Python2

PyIlmBase/PyImath/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 pyilmbase_define_module(imath
   LIBNAME PyImath
   PRIV_EXPORT PYIMATH_BUILD

PyIlmBase/PyImathNumpy/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 if(TARGET Python2::Python AND
    TARGET Boost::${PYILMBASE_BOOST_PY2_COMPONENT} AND
    TARGET Python2::IlmBaseNumPy)

PyIlmBase/PyImathNumpyTest/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 if(TARGET Python2::Interpreter)
   add_test(PyIlmBase.PyImathNumpyTest_Python2

PyIlmBase/PyImathTest/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
+
 if(TARGET Python2::Interpreter)
   add_test(PyIlmBase.PyImathTest_Python2
     ${Python2_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/pyImathTest.in

PyIlmBase/config/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright Contributors to the OpenEXR Project.
 
 ### The autoconf setup for this folder generates a PyIlmBaseConfig.h file
 ### but no source actually uses that, so let's elide that for now