--- a/Cbc/configure
+++ b/Cbc/configure
@@ -30970,7 +30970,7 @@ cat >>confdefs.h <<\_ACEOF
 #define CBC_THREAD 1
 _ACEOF
 
-  if test $coin_cxx_is_cl = true ;
+  if test "${with_pthreadsw32_lib+set}" = set ;
   then
     # TODO we should check whether the library works and pthread.h is indeed there