Index: desktop-3.1.0/src/cmd/CMakeLists.txt
===================================================================
--- desktop-3.1.0.orig/src/cmd/CMakeLists.txt
+++ desktop-3.1.0/src/cmd/CMakeLists.txt
@@ -23,8 +23,13 @@ if(NOT BUILD_LIBRARIES_ONLY)
    add_executable(${cmd_NAME}  ${cmd_SRC})
 	set_target_properties(${cmd_NAME} PROPERTIES
 	        RUNTIME_OUTPUT_DIRECTORY  ${BIN_OUTPUT_DIRECTORY} )
+	if(LIB_INSTALL_DIR MATCHES "^/")
+		set_target_properties(${cmd_NAME} PROPERTIES
+			INSTALL_RPATH "${LIB_INSTALL_DIR}/${APPLICATION_EXECUTABLE};${CMAKE_INSTALL_RPATH}" )
+	else()
         set_target_properties(${cmd_NAME} PROPERTIES
 		INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${LIB_INSTALL_DIR}/${APPLICATION_EXECUTABLE};${CMAKE_INSTALL_RPATH}" )
+	endif()
 
     target_link_libraries(${cmd_NAME} ocsync ${synclib_NAME} Qt5::Core Qt5::Network)
 
Index: desktop-3.1.0/src/crashreporter/CMakeLists.txt
===================================================================
--- desktop-3.1.0.orig/src/crashreporter/CMakeLists.txt
+++ desktop-3.1.0/src/crashreporter/CMakeLists.txt
@@ -29,7 +29,11 @@ if(NOT BUILD_LIBRARIES_ONLY)
     target_include_directories(${CRASHREPORTER_EXECUTABLE} PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
     set_target_properties(${CRASHREPORTER_EXECUTABLE} PROPERTIES AUTOMOC ON)
     set_target_properties(${CRASHREPORTER_EXECUTABLE} PROPERTIES RUNTIME_OUTPUT_DIRECTORY  ${BIN_OUTPUT_DIRECTORY} )
+    if(LIB_INSTALL_DIR MATCHES "^/")
+        set_target_properties(${CRASHREPORTER_EXECUTABLE} PROPERTIES INSTALL_RPATH "${LIB_INSTALL_DIR}/${APPLICATION_EXECUTABLE}" )
+    else()
     set_target_properties(${CRASHREPORTER_EXECUTABLE} PROPERTIES INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${LIB_INSTALL_DIR}/${APPLICATION_EXECUTABLE}" )
+    endif()
     target_link_libraries(${CRASHREPORTER_EXECUTABLE}
         crashreporter-gui
         Qt5::Core Qt5::Widgets
Index: desktop-3.1.0/src/gui/CMakeLists.txt
===================================================================
--- desktop-3.1.0.orig/src/gui/CMakeLists.txt
+++ desktop-3.1.0/src/gui/CMakeLists.txt
@@ -325,8 +325,13 @@ set_target_properties( ${APPLICATION_EXE
         RUNTIME_OUTPUT_DIRECTORY  ${BIN_OUTPUT_DIRECTORY}
 )
 # Only relevant for Linux? On OS X it by default properly checks in the bundle directory next to the exe
-set_target_properties( ${APPLICATION_EXECUTABLE} PROPERTIES
+if(LIB_INSTALL_DIR MATCHES "^/")
+    set_target_properties( ${APPLICATION_EXECUTABLE} PROPERTIES
+        INSTALL_RPATH "${LIB_INSTALL_DIR}/${APPLICATION_EXECUTABLE};${CMAKE_INSTALL_RPATH}" )
+else()
+    set_target_properties( ${APPLICATION_EXECUTABLE} PROPERTIES
         INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${LIB_INSTALL_DIR}/${APPLICATION_EXECUTABLE};${CMAKE_INSTALL_RPATH}" )
+endif()
 
 target_link_libraries( ${APPLICATION_EXECUTABLE} Qt5::Widgets Qt5::GuiPrivate Qt5::Svg Qt5::Network Qt5::Xml Qt5::Qml Qt5::Quick Qt5::QuickControls2 Qt5::WebEngineWidgets)
 target_link_libraries( ${APPLICATION_EXECUTABLE} ${synclib_NAME} )
Index: desktop-3.1.0/src/libsync/CMakeLists.txt
===================================================================
--- desktop-3.1.0.orig/src/libsync/CMakeLists.txt
+++ desktop-3.1.0/src/libsync/CMakeLists.txt
@@ -126,8 +126,13 @@ set_target_properties( ${synclib_NAME}
 	SOVERSION ${MIRALL_SOVERSION}
 	RUNTIME_OUTPUT_DIRECTORY ${BIN_OUTPUT_DIRECTORY}
 )
-set_target_properties( ${synclib_NAME} PROPERTIES
+if(LIB_INSTALL_DIR MATCHES "^/")
+    set_target_properties( ${synclib_NAME} PROPERTIES
+        INSTALL_RPATH "${LIB_INSTALL_DIR}/${APPLICATION_EXECUTABLE};${CMAKE_INSTALL_RPATH}" )
+else()
+    set_target_properties( ${synclib_NAME} PROPERTIES
 	INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${LIB_INSTALL_DIR}/${APPLICATION_EXECUTABLE};${CMAKE_INSTALL_RPATH}" )
+endif()
 
 if(NOT BUILD_OWNCLOUD_OSX_BUNDLE)
     install(TARGETS ${synclib_NAME}