diff --git a/qt4/lib/mk/qt_jscore.mk b/qt4/lib/mk/qt_jscore.mk
index 8352ad949..0bf2f99d3 100644
--- a/qt4/lib/mk/qt_jscore.mk
+++ b/qt4/lib/mk/qt_jscore.mk
@@ -11,6 +11,13 @@ CC_CXX_OPT += -D_GLIBCXX_USE_C99_MATH
 # use default warning level to avoid noise when compiling contrib code
 CC_WARN =
 
+# some parts of the library are not C++11 compatible
+CC_CXX_OPT_STD =
+
+# StackBounds includes Genode headers, which rely on C++11. Hence, we need
+# to selectively enable C++11 for this compilation unit.
+CC_OPT_StackBounds = -std=gnu++11
+
 include $(REP_DIR)/lib/mk/qt_jscore_generated.inc
 
 include $(REP_DIR)/lib/mk/qt.inc
diff --git a/qt4/lib/mk/qt_webcore.mk b/qt4/lib/mk/qt_webcore.mk
index c3a683d77..5701466bd 100644
--- a/qt4/lib/mk/qt_webcore.mk
+++ b/qt4/lib/mk/qt_webcore.mk
@@ -13,6 +13,9 @@ CC_WARN = -Wno-deprecated-declarations
 
 CC_OPT_sqlite3 +=  -Wno-int-to-pointer-cast -Wno-pointer-to-int-cast
 
+# some parts of the library are not C++11 compatible
+CC_CXX_OPT_STD =
+
 include $(REP_DIR)/lib/mk/qt_webcore_generated.inc
 
 include $(REP_DIR)/lib/mk/qt.inc
diff --git a/qt4/lib/mk/qt_webkit.mk b/qt4/lib/mk/qt_webkit.mk
index f98dde23a..680f65eae 100644
--- a/qt4/lib/mk/qt_webkit.mk
+++ b/qt4/lib/mk/qt_webkit.mk
@@ -13,6 +13,9 @@ CC_WARN = -Wno-deprecated-declarations
 
 CC_OPT_sqlite3 +=  -Wno-int-to-pointer-cast -Wno-pointer-to-int-cast
 
+# some parts of the library are not C++11 compatible
+CC_CXX_OPT_STD =
+
 include $(REP_DIR)/lib/mk/qt_webkit_generated.inc
 
 include $(REP_DIR)/lib/mk/qt.inc