From 9ab95e6d7230dc5deb06a8e6e3f647e8b48b87c6 Mon Sep 17 00:00:00 2001
From: don bright <hugh.m.bright@gmail.com>
Date: Sun, 6 Nov 2011 14:28:35 +0100
Subject: provide helpful error message when 'qmake' for qt3 is run


diff --git a/openscad.pro b/openscad.pro
index 8c72b3f..89df95d 100644
--- a/openscad.pro
+++ b/openscad.pro
@@ -1,3 +1,8 @@
+
+isEmpty(QT_VERSION) {
+  error("Please use qmake for Qt 4 (probably qmake-qt4)")
+}
+
 # Auto-include config_<variant>.pri if the VARIANT variable is give on the
 # command-line, e.g. qmake VARIANT=mybuild
 !isEmpty(VARIANT) {
-- 
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