diff --git a/CMakeLists.txt b/CMakeLists.txt
index b60c0cd..b79a379 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@
 ############################################
 
 
-cmake_minimum_required( VERSION 3.5 )
+cmake_minimum_required( VERSION 3.1 )
 
 
 #### general package setup
@@ -69,9 +69,9 @@ include( ConfigureChecks.cmake )
 add_definitions( -DHAVE_CONFIG_H )
 
 set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${TQT_CXX_FLAGS}" )
-set( CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined" )
+set( CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined -L/usr/X11R7/lib" )
 set( CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--no-undefined" )
-
+set( CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -llcms -ljasper -lm -ljpeg -L/usr/X11R7/lib")
 
 ##### directories