Add prepare_docs to CONFIG as preparation to two-pass doc builds

Won't have any effect until the corresponding patch lands in qtbase.

Change-Id: I807ca48d3e2ab671f0d56eea27f72455304d367b
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/qt.pro b/qt.pro
index 3c94cc43..edaf37b1 100644
--- a/qt.pro
+++ b/qt.pro
@@ -3,6 +3,8 @@ cache(, super)
 
 TEMPLATE      = subdirs
 
+CONFIG += prepare_docs
+
 module_qtbase.subdir = qtbase
 module_qtbase.target = module-qtbase