diff --git a/src/tools/clangbackend/clangbackend.pro b/src/tools/clangbackend/clangbackend.pro
index 3b7c5de518c..c1c72036ea7 100644
--- a/src/tools/clangbackend/clangbackend.pro
+++ b/src/tools/clangbackend/clangbackend.pro
@@ -19,7 +19,7 @@ SOURCES += clangbackendmain.cpp
 HEADERS += ../qtcreatorcrashhandler/crashhandlersetup.h
 SOURCES += ../qtcreatorcrashhandler/crashhandlersetup.cpp
 
-unix {
+unix:!disable_external_rpath:!contains(QMAKE_DEFAULT_LIBDIRS, $${LLVM_LIBDIR}) {
     !osx: QMAKE_LFLAGS += -Wl,-z,origin
-    !contains(QMAKE_DEFAULT_LIBDIRS, $${LLVM_LIBDIR}):!disable_external_rpath: QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
+    QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
 }
diff --git a/src/tools/clangpchmanagerbackend/clangpchmanagerbackend.pro b/src/tools/clangpchmanagerbackend/clangpchmanagerbackend.pro
index b54db0be04a..efdd94377b0 100644
--- a/src/tools/clangpchmanagerbackend/clangpchmanagerbackend.pro
+++ b/src/tools/clangpchmanagerbackend/clangpchmanagerbackend.pro
@@ -28,9 +28,9 @@ SOURCES += \
     ../clangrefactoringbackend/source/refactoringcompilationdatabase.cpp
 
 
-unix {
+unix:!disable_external_rpath:!contains(QMAKE_DEFAULT_LIBDIRS, $${LLVM_LIBDIR}) {
     !macx: QMAKE_LFLAGS += -Wl,-z,origin
-    !disable_external_rpath: QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
+    QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
 }
 
 DEFINES += CLANG_COMPILER_PATH=\"R\\\"xxx($${LLVM_BINDIR}/clang)xxx\\\"\"
diff --git a/src/tools/clangrefactoringbackend/clangrefactoringbackend.pro b/src/tools/clangrefactoringbackend/clangrefactoringbackend.pro
index 3b94d003c06..6e7c8262a92 100644
--- a/src/tools/clangrefactoringbackend/clangrefactoringbackend.pro
+++ b/src/tools/clangrefactoringbackend/clangrefactoringbackend.pro
@@ -23,7 +23,7 @@ QMAKE_CXXFLAGS += $$LLVM_CXXFLAGS
 SOURCES += \
     clangrefactoringbackendmain.cpp
 
-unix {
+unix:!disable_external_rpath:!contains(QMAKE_DEFAULT_LIBDIRS, $$LLVM_LIBDIR) {
     !osx: QMAKE_LFLAGS += -Wl,-z,origin
-    !disable_external_rpath: QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
+    QMAKE_LFLAGS += -Wl,-rpath,$$shell_quote($${LLVM_LIBDIR})
 }
diff --git a/tests/unit/unittest/clang_dependency.pri b/tests/unit/unittest/clang_dependency.pri
index 9c2a3c57a3c..e0c3b1a9483 100644
--- a/tests/unit/unittest/clang_dependency.pri
+++ b/tests/unit/unittest/clang_dependency.pri
@@ -17,7 +17,7 @@ include(../../../src/shared/clang/clang_installation.pri)
     }
 
     LIBS += $$LIBTOOLING_LIBS $$LIBCLANG_LIBS
-    QMAKE_RPATHDIR += $$LLVM_LIBDIR
+    !contains(QMAKE_DEFAULT_LIBDIRS, $$LLVM_LIBDIR): QMAKE_RPATHDIR += $$LLVM_LIBDIR
 
     LLVM_CXXFLAGS ~= s,-g\d?,
     QMAKE_CXXFLAGS += $$LLVM_CXXFLAGS