abort under automated testing if we can't find threads support code

diff --git a/Makefile.PL b/Makefile.PL
index aee608cd7415cc43bf0ad188e9e9cc88ed95758f..3d3cffa15b8f0d2e76bd8f5949b1414ad33667e6 100644 (file)
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -181,6 +181,9 @@ if ($Config{useithreads}) {
   else {
     print "Unsupported threading model\n";
     push @objs, "mutexnull.o";
+    if ($ENV{AUTOMATED_TESTING}) {
+      die "OS unsupported: no threading support code for this platform\n";
+    }
   }
 }
 else {