replace GLEW with libepoxytemp-libepoxy

As discussed in https://developer.blender.org/D12034#412258, GLEW should be replaced by libepoxy to enable dynamic loading of OpenGL.

Build:
```sh
make lite debug ninja BUILD_CMAKE_ARGS="-DWITH_GHOST_X11=OFF -DWITH_GHOST_WAYLAND=ON -DWITH_GHOST_WAYLAND_LIBDECOR=ON -DPYTHON_VERSION=3.10" BUILD_DIR="../blender_build"
```

Verify that there are no X11 dependencies any more:
```sh
lddtree ./blender_build/bin/blender
```
and:
```sh
./blender_build/bin/blender
```

should then start a pure Wayland client.

This also works with GLX (`-DWITH_GHOST_X11=ON -DWITH_GHOST_WAYLAND=OFF`).

This has not been tested on other systems (Windows, macOS) as I do not have access to those systems and the build bot does not allow me to trigger experimental builds any more (I get "you need to have role 'any-control'").

Reviewed By: campbellbarton, brecht, jbakker

Differential Revision: https://developer.blender.org/D15291

1 files changed, 1 insertions, 1 deletions

diff --git a/build_files/build_environment/CMakeLists.txt b/build_files/build_environment/CMakeLists.txt
index e0350901cd0..172ddcd498c 100644
--- a/build_files/build_environment/CMakeLists.txt
+++ b/build_files/build_environment/CMakeLists.txt
@@ -53,8 +53,8 @@ include(cmake/imath.cmake)
 include(cmake/openexr.cmake)
 include(cmake/brotli.cmake)
 include(cmake/freetype.cmake)
+include(cmake/epoxy.cmake)
 include(cmake/freeglut.cmake)
-include(cmake/glew.cmake)
 include(cmake/alembic.cmake)
 include(cmake/opensubdiv.cmake)
 include(cmake/sdl.cmake)