diff -ruN qt-everywhere-src-5.11.1.orig/qtbase/config_help.txt qt-everywhere-src-5.11.1/qtbase/config_help.txt
--- qt-everywhere-src-5.11.1.orig/qtbase/config_help.txt	2018-06-15 09:29:31.000000000 +0200
+++ qt-everywhere-src-5.11.1/qtbase/config_help.txt	2018-07-05 00:43:43.000000000 +0200
@@ -279,6 +279,7 @@
   -qpa <name> .......... Select default QPA backend(s) (e.g., xcb, cocoa, windows)
                          A prioritized list separated by semi-colons.
   -xcb-xlib............. Enable Xcb-Xlib support [auto]
+  -xcb-glx.............. Enable Xcb-GLX support [auto]
 
   Platform backends:
     -direct2d .......... Enable Direct2D support [auto] (Windows only)
diff -ruN qt-everywhere-src-5.11.1.orig/qtbase/src/gui/configure.json qt-everywhere-src-5.11.1/qtbase/src/gui/configure.json
--- qt-everywhere-src-5.11.1.orig/qtbase/src/gui/configure.json	2018-06-15 09:29:31.000000000 +0200
+++ qt-everywhere-src-5.11.1/qtbase/src/gui/configure.json	2018-07-05 00:43:43.000000000 +0200
@@ -44,6 +44,7 @@
             "xcb": { "type": "enum", "values": [ "no", "yes", "qt", "system" ] },
             "xcb-native-painting": "boolean",
             "xcb-xlib": "boolean",
+            "xcb-glx": "boolean",
             "xinput2": "boolean",
             "xkb": "boolean",
             "xkbcommon": { "type": "enum", "values": [ "no", "qt", "system" ] },
@@ -1289,7 +1290,7 @@
             "label": "XCB GLX",
             "emitIf": "features.xcb",
             "condition": "libs.xcb_glx",
-            "output": [ "privateFeature" ]
+            "output": [ "publicFeature", "feature" ]
         },
         "xcb-native-painting": {
             "label": "Native painting (experimental)",