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glcpp -- GLSL "C" preprocessor

This is a simple preprocessor designed to provide the preprocessing
needs of the GLSL language. The requirements for this preprocessor are
specified in the GLSL 1.30 specification availble from:

http://www.opengl.org/registry/doc/GLSLangSpec.Full.1.30.10.pdf

This specification is not precise on some semantics, (for example,
#define and #if), defining these merely "as is standard for C++
preprocessors". To fill in these details, I've been using a draft of
the C99 standard as available from:

http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf

Any downstream compiler accepting output from glcpp should be prepared
to encounter and deal with the following preprocessor macros:

	#line
	#pragma
	#extension

All other macros will be handled according to the GLSL specification
and will not appear in the output.

Known limitations
-----------------
A file that ends with a function-like macro name as the last
non-whitespace token will result in a parse error, (where it should be
passed through as is).

 Name                                                                            Last modified      Size  
 Parent Directory                                                                                     -   
 CVS/                                                                            17-Dec-2022 21:58    -   
 tests/                                                                          17-Dec-2022 21:57    -   
 README                                                                          11-Jul-2021 22:36  1.0K  
 glcpp-lex.l                                                                     11-Jul-2021 22:36   16K  
 glcpp-parse.y                                                                   11-Jul-2021 22:36   68K  
 glcpp.c                                                                         11-Jul-2021 22:36  4.3K  
 glcpp.h                                                                         11-Jul-2021 22:36  6.5K  
 meson.build                                                                     11-Jul-2021 22:36  2.5K  
 pp.c                                                                            11-Jul-2021 22:36  7.1K  

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