Formalize license headers

Author: saki7

.github/workflows/ci.yml

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: MIT
+
 name: CI
 
 on:

CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: MIT
+
 cmake_minimum_required(VERSION 3.30)
 
 if(DEFINED ENV{VCPKG_ROOT} AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2026 iris-cpp
+Copyright (c) 2026 The Iris Project Contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

include/iris/config.hpp

@@ -1,6 +1,8 @@
 #ifndef IRIS_CONFIG_HPP
 #define IRIS_CONFIG_HPP
 
+// SPDX-License-Identifier: MIT
+
 #include <version>
 
 #define IRIS_STRINGIZE_I(x) #x

include/iris/type_traits.hpp

@@ -1,6 +1,8 @@
 #ifndef IRIS_TYPE_TRAITS_HPP
 #define IRIS_TYPE_TRAITS_HPP
 
+// SPDX-License-Identifier: MIT
+
 #include <iris/config.hpp>
 
 #include <type_traits>

test/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: MIT
+
 # For Iris-specific tests.
 add_library(iris_cxx_test INTERFACE)
 set_target_properties(iris_cxx_test PROPERTIES CXX_EXTENSIONS OFF)

test/test.hpp

@@ -1,6 +1,8 @@
 #ifndef IRIS_TEST_TEST_HPP
 #define IRIS_TEST_TEST_HPP
 
+// SPDX-License-Identifier: MIT
+
 #include <iris/config.hpp>
 
 #include <catch2/catch_test_macros.hpp>

test/type_traits.cpp

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include "test.hpp"
 
 #include <iris/type_traits.hpp>