diff --git a/src/shared/clang/clang_installation.pri b/src/shared/clang/clang_installation.pri
index 6d1557a4c58..517ded4e4b4 100644
--- a/src/shared/clang/clang_installation.pri
+++ b/src/shared/clang/clang_installation.pri
@@ -117,7 +117,8 @@ LIBCLANG_LIBS += $${CLANG_LIB}
 
 QTC_NO_CLANG_LIBTOOLING=$$(QTC_NO_CLANG_LIBTOOLING)
 isEmpty(QTC_NO_CLANG_LIBTOOLING) {
-    versionIsEqual($$LLVM_VERSION, 3, 9) {
+    QTC_FORCE_CLANG_LIBTOOLING = $$(QTC_FORCE_CLANG_LIBTOOLING)
+    versionIsEqual($$LLVM_VERSION, 3, 9)|!isEmpty(QTC_FORCE_CLANG_LIBTOOLING) {
         !contains(QMAKE_DEFAULT_LIBDIRS, $$LLVM_LIBDIR): LIBTOOLING_LIBS = -L$${LLVM_LIBDIR}
         LIBTOOLING_LIBS += $$CLANGTOOLING_LIBS $$LLVM_STATIC_LIBS
         contains(QMAKE_DEFAULT_INCDIRS, $$LLVM_INCLUDEPATH): LLVM_INCLUDEPATH =