Index: src/3rdParty/salomesmesh/CMakeLists.txt
--- src/3rdParty/salomesmesh/CMakeLists.txt.orig
+++ src/3rdParty/salomesmesh/CMakeLists.txt
@@ -135,6 +135,7 @@ else(MSVC)
             ${NGLIB_LIBRARIES}
             ${OCC_LIBRARIES}
             ${OCC_OCAF_LIBRARIES}
+            -L${X11BASE}/lib
         )
         ADD_DEFINITIONS(${NETGEN_DEFINITIONS})
     else(BUILD_FEM_NETGEN)
