COPYING.RUNTIME

STruC++ RUNTIME LIBRARY EXCEPTION

Version 1.0, 2025

Copyright (C) 2025 Autonomy / OpenPLC Project.

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.

This STruC++ Runtime Library Exception ("Exception") is an additional
permission under section 7 of the GNU General Public License, version 3
("GPLv3"). It applies to a given file (the "Runtime Library") that bears
a notice placed by the copyright holder of the file stating that the file
is governed by GPLv3 along with this Exception.

When you use STruC++ to compile a program, STruC++ may combine portions of
certain STruC++ header files and runtime libraries with the compiled
program. The purpose of this Exception is to allow compilation of non-GPL
(including proprietary) programs to use, in this way, the header files and
runtime libraries covered by this Exception.

0. Definitions.

A file is an "Independent Module" if it either requires no license from
the copyright holders of the covered file, or if the license it requires
is compatible with both the GPLv3 and this Exception.

"STruC++" means a version of the STruC++ compiler, with or without
modifications, governed by version 3 (or a specified later version) of
the GNU General Public License (GPL) and not solely by any other licenses.

"Target Code" is output from any compiler for a real or virtual target
processor architecture, in a form suitable for input to an assembler,
loader, linker and/or execution environment.

"Compilation Process" means a process that transforms source code governed
only by Independent Modules into Target Code.

"Eligible Compilation Process" means a Compilation Process that uses
STruC++, alone or with other GPL-compatible software, to transform code.

1. Grant of Additional Permission.

You have permission to propagate a work of Target Code formed by combining
the Runtime Library with Independent Modules, even if such propagation
would otherwise violate the terms of GPLv3, provided that all Target Code
was generated through Eligible Compilation Processes. You may then convey
such a combination under terms of your choice, consistent with the
licensing of the Independent Modules.

2. No Weakening of STruC++ Copyleft.

The availability of this Exception does not imply any general presumption
that third-party software is unaffected by the copyleft requirements of
the license of STruC++.