diff -r 782c3b4cbc88 setup.py
--- a/setup.py	Thu Jun 05 12:07:14 2014 +0200
+++ b/setup.py	Thu Jun 05 14:39:27 2014 +0200
@@ -578,7 +578,8 @@
                                libraries=math_libs) )
 
         # time libraries: librt may be needed for clock_gettime()
-        time_libs = []
+        # math_libs is needed by floatsleep()
+        time_libs = list(math_libs)
         lib = sysconfig.get_config_var('TIMEMODULE_LIB')
         if lib:
             time_libs.append(lib)
@@ -634,8 +635,10 @@
         else:
             missing.append('spwd')
 
-        # select(2); not on ancient System V
-        exts.append( Extension('select', ['selectmodule.c']) )
+        # select(2): not on ancient System V
+        # selectmodule.c calls the ceil(3) math function
+        exts.append( Extension('select', ['selectmodule.c'],
+                               libraries=math_libs) )
 
         # Fred Drake's interface to the Python parser
         exts.append( Extension('parser', ['parsermodule.c']) )