diff -Nrup a/src/ClimatologyOverlayFactory.cpp b/src/ClimatologyOverlayFactory.cpp --- a/src/ClimatologyOverlayFactory.cpp 2022-06-17 23:28:17.000000000 +0100 +++ b/src/ClimatologyOverlayFactory.cpp 2022-06-28 11:51:26.433588114 +0100 @@ -49,6 +49,8 @@ #include "GLES2/gl2.h" #endif +#include <GL/glx.h> + #include "climatology_pi.h" #include "gldefs.h" #include "icons.h"