LICENSE.txt

Here, glslang proper means core GLSL parsing, HLSL parsing, and SPIR-V code
generation. Glslang proper requires use of a number of licenses, one that covers
preprocessing and others that covers non-preprocessing.

Bison was removed long ago. You can build glslang from the source grammar,
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Other parts, outside of glslang proper, include:

- gl_types.h, only needed for OpenGL-like reflection, and can be left out of
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- update_glslang_sources.py, which is not part of the project proper and does
  not need to be used.

- the SPIR-V "remapper", which is optional, but has the same license as
  glslang proper

- Google tests and SPIR-V tools, and anything in the external subdirectory
  are external and optional; see them for their respective licenses.

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The core of glslang-proper, minus the preprocessor is licenced as follows:

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Bison Exception

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This special exception was added by the Free Software Foundation in version
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                     END OF TERMS AND CONDITIONS

--------------------------------------------------------------------------------
================================================================================
--------------------------------------------------------------------------------

The preprocessor has the core licenses stated above, plus additional licences:

/****************************************************************************\
Copyright (c) 2002, NVIDIA Corporation.

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\****************************************************************************/

/*
** Copyright (c) 2014-2016 The Khronos Group Inc.
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