Hi Rob, We are getting the following kmscube build error in Buildroot: ../cube-shadertoy.c:37:10: fatal error: GLES3/gl3.h: No such file or directory 37 | #include <GLES3/gl3.h> Complete log: http://autobuild.buildroot.net/results/7f559e89a96273fc019056eae13104e14161a484/build-end.log In OpenEmbedded the following patch is used: http://cgit.openembedded.org/openembedded-core/tree/meta/recipes-graphics/kmscube/kmscube/0001-texturator-Use-correct-GL-extension-header.patch?h=master What would be the appropriate fix for this issue? Thanks, Fabio Estevam