diff -rupN --no-dereference lxml-4.6.2/setupinfo.py lxml-4.6.2-new/setupinfo.py
--- lxml-4.6.2/setupinfo.py	2020-10-17 10:39:36.000000000 +0200
+++ lxml-4.6.2-new/setupinfo.py	2020-12-03 17:11:47.084737994 +0100
@@ -264,8 +264,8 @@ def print_libxml_error():
 
 def libraries():
     standard_libs = []
-    if 'linux' in sys.platform:
-        standard_libs.append('rt')
+    #if 'linux' in sys.platform:
+        #standard_libs.append('rt')
     if not OPTION_BUILD_LIBXML2XSLT:
         standard_libs.append('z')
     standard_libs.append('m')