no-gl-h - how to

Fault

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In file included from /home/xuehan/Documents/GitHub/real-stanford/cloth-funnels/cloth_funnels/PyFlex/bindings/opengl/shader.cpp:28:
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/home/xuehan/Documents/GitHub/real-stanford/cloth-funnels/cloth_funnels/PyFlex/bindings/opengl/shader.h:50:10: fatal error: GL/gl.h: No such file or directory
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   50 | #include <GL/gl.h>
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      |          ^~~~~~~~~
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compilation terminated.
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make[2]: *** [CMakeFiles/pyflex.dir/build.make:271: CMakeFiles/pyflex.dir/opengl/shader.cpp.o] Error 1
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make[2]: *** Waiting for unfinished jobs....
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In file included from /home/xuehan/Documents/GitHub/real-stanford/cloth-funnels/cloth_funnels/PyFlex/bindings/opengl/imguiRenderGL.cpp:25:
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/home/xuehan/Documents/GitHub/real-stanford/cloth-funnels/cloth_funnels/PyFlex/bindings/opengl/shader.h:50:10: fatal error: GL/gl.h: No such file or directory
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   50 | #include <GL/gl.h>
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      |          ^~~~~~~~~
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compilation terminated.
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make[2]: *** [CMakeFiles/pyflex.dir/build.make:258: CMakeFiles/pyflex.dir/opengl/imguiRenderGL.cpp.o] Error 1
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In file included from /home/xuehan/Documents/GitHub/real-stanford/cloth-funnels/cloth_funnels/PyFlex/bindings/opengl/../../external/glad/src/glad_egl.c:160,
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                 from /home/xuehan/Documents/GitHub/real-stanford/cloth-funnels/cloth_funnels/PyFlex/bindings/opengl/shadersGL.cpp:39:
2 collapsed lines
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/home/xuehan/Documents/GitHub/real-stanford/cloth-funnels/cloth_funnels/PyFlex/bindings/opengl/../../external/glad/src/../include/glad/glad_egl.h:199:10: fatal error: EGL/eglplatform.h: No such file or directory
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  199 | #include <EGL/eglplatform.h>

Sol

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sudo apt install freeglut3-dev