--- /dev/null
+From f42186815187be1a0c5c0f9d6acc657872d3d533 Mon Sep 17 00:00:00 2001
+From: Laszlo Agocs <laszlo.agocs@qt.io>
+Date: Mon, 20 Sep 2021 11:16:09 +0200
+Subject: [PATCH] Cater for upstream changes in eglplatform.h
+
+EGL_NO_X11 has been replaced with USE_X11, thus breaking all existing
+code out there, including Qt:
+https://github.com/KhronosGroup/EGL-Registry/pull/130
+
+Fix this by defining USE_X11 whenever we do not define EGL_NO_X11.
+
+Fixes: QTBUG-96392
+Pick-to: 6.2
+Change-Id: If8b68caa8c9022477d87169ca2e2a0121a9313e0
+Reviewed-by: Andy Nichols <andy.nichols@qt.io>
+(cherry picked from commit 4cc5428548cb8ab973e4b0281dd123d59bfaf6a0)
+---
+ src/gui/configure.json | 3 ++-
+ src/platformsupport/eglconvenience/qt_egl_p.h | 6 +++++-
+ 2 files changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/src/gui/configure.json b/src/gui/configure.json
+index 1f08795c57..12c95742d2 100644
+--- a/src/gui/configure.json
++++ b/src/gui/configure.json
+@@ -834,7 +834,8 @@
+ "// embedded devices, are not intended to be used together with X. EGL support",
+ "// has to be disabled in plugins like xcb in this case since the native display,",
+ "// window and pixmap types will be different than what an X-based platform",
+- "// plugin would expect."
++ "// plugin would expect.",
++ "#define USE_X11"
+ ],
+ "include": [ "EGL/egl.h", "X11/Xlib.h" ],
+ "main": [
+diff --git a/src/platformsupport/eglconvenience/qt_egl_p.h b/src/platformsupport/eglconvenience/qt_egl_p.h
+index bf37d07fd8..dbd42fb799 100644
+--- a/src/platformsupport/eglconvenience/qt_egl_p.h
++++ b/src/platformsupport/eglconvenience/qt_egl_p.h
+@@ -61,7 +61,11 @@
+ # if !defined(Q_OS_INTEGRITY)
+ # define WIN_INTERFACE_CUSTOM // NV
+ # endif // Q_OS_INTEGRITY
+-#endif // QT_EGL_NO_X11
++#else // QT_EGL_NO_X11
++// If one has an eglplatform.h with https://github.com/KhronosGroup/EGL-Registry/pull/130
++// that needs USE_X11 to be defined.
++# define USE_X11
++#endif
+
+ #ifdef QT_EGL_WAYLAND
+ # define WAYLAND // NV
+--
+GitLab
+