cs-bisection-step: Add a debug print when we run dot(1)

Amongst other things this was useful for perf investigation.

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
v2: New patch.

diff --git a/cs-bisection-step b/cs-bisection-step
index a82cbfb8898cf44d39aef41ae09e9ded504039b7..027032a12d20bb42d530bce7963d4ae75147c05d 100755 (executable)
--- a/cs-bisection-step
+++ b/cs-bisection-step
@@ -1114,6 +1114,7 @@ END
 
     if (eval {
         foreach my $fmt (qw(ps png svg)) {
+           print DEBUG "RUNNING dot -T$fmt\n";
             system_checked("dot", "-T$fmt", "-o$graphfile.$fmt",
                           "$graphfile.dot");
         }