be serious about the minimal supported Qt version

Change-Id: I1721501cbc54580298b42a47b4ca68a11e33ab6c
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/qbs.pro b/qbs.pro
index c1d8c1804..7f74d2cb5 100644
--- a/qbs.pro
+++ b/qbs.pro
@@ -1,3 +1,31 @@
+defineTest(minQtVersion) {
+    maj = $$1
+    min = $$2
+    patch = $$3
+    isEqual(QT_MAJOR_VERSION, $$maj) {
+        isEqual(QT_MINOR_VERSION, $$min) {
+            isEqual(QT_PATCH_VERSION, $$patch) {
+                return(true)
+            }
+            greaterThan(QT_PATCH_VERSION, $$patch) {
+                return(true)
+            }
+        }
+        greaterThan(QT_MINOR_VERSION, $$min) {
+            return(true)
+        }
+    }
+    greaterThan(QT_MAJOR_VERSION, $$maj) {
+        return(true)
+    }
+    return(false)
+}
+
+!minQtVersion(4, 8, 0) {
+    message("Cannot build Qt Creator with Qt version $${QT_VERSION}.")
+    error("Use at least Qt 4.8.0.")
+}
+
 TEMPLATE = subdirs
 CONFIG += ordered
 lib.file = src/lib/lib.pro