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magnum/external/OpenGL/GL/README.md

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Export GLLoadGen symbols so they can be used in shared libraries. Caused linker problems mainly on Windows, where every symbol would need to be exported manually, on Linux this was done implicitly (or with `-fvisibility=default`). I now maintain glLoadGen fork at https://github.com/mosra/glloadgen.git containing changes needed for Magnum. The `ogl_*()` functions are used only internally, various global variables for extension queries are not used at all and thus they don't need to be exported. I thus enabled `-fvisibility=hidden`. Fixes #16.
13 years ago
OpenGL header and extension loader is generated using glLoadGen, originally
from [BitBucket](https://bitbucket.org/alfonse/glloadgen), with Magnum-related
changes at [](https://github.com/mosra/glloadgen.git).
Initial glLoadGen work. Added README, extension list, patch required for it to work on GL 2.1 and the generated files.
13 years ago
See `extensions.txt` for a list of requested non-core extensions. Copy the file
into glLoadGen directory and generate the files using Lua:
lua LoadGen.lua -style=pointer_c -indent=space -spec=gl -version=4.4 -profile=core -extfile=extensions.txt magnum
Then copy generated `gl_magnum.c` and `gl_magnum.h` to this directory. You may
want to remove trailing spaces to make the diff cleaner. Be sure to check the
diff for suspicious changes.