Index: adm/cmake/occt_csf.cmake
--- adm/cmake/occt_csf.cmake.orig
+++ adm/cmake/occt_csf.cmake
@@ -134,7 +134,7 @@ else()
     set (CSF_OpenGlesLibs "EGL GLESv2")
     set (CSF_androidlog  "log")
   elseif (UNIX)
-    set (CSF_ThreadLibs  "pthread rt stdc++")
+    set (CSF_ThreadLibs  "pthread stdc++")
     if (USE_XLIB)
       set (CSF_OpenGlLibs "GL")
       set (CSF_XwLibs     "X11")
@@ -142,7 +142,6 @@ else()
       set (CSF_OpenGlLibs "GL EGL")
     endif()
     set (CSF_OpenGlesLibs "EGL GLESv2")
-    set (CSF_dl          "dl")
     if (USE_FREETYPE)
       set (CSF_fontconfig "fontconfig")
     endif()
