1 files changed, 9 insertions, 0 deletions
diff --git a/mkspecs/features/mac/default_post.prf b/mkspecs/features/mac/default_post.prf
index 614b336f27..da3e22b5f3 100644
--- a/mkspecs/features/mac/default_post.prf
+++ b/mkspecs/features/mac/default_post.prf
@@ -25,6 +25,15 @@ qt:!isEmpty(QT_CONFIG) {
             warning("Qt was not built with C++11 enabled, disabling feature")
             CONFIG -= c++11
         }
+
+        !c++11 {
+            # Explicitly use libstdc++ if C++11 support is not enabled,
+            # as otherwise the compiler will choose the standard library
+            # based on the deployment target, which for iOS 7 and OS X 10.9
+            # is libc++, and we can't mix and match the two.
+            QMAKE_CXXFLAGS += -stdlib=libstdc++
+            QMAKE_LFLAGS   += -stdlib=libstdc++
+        }
     }
 }