diff -ru a/boost_1_54_0/tools/build/v2/engine/filent.c b/boost_1_54_0/tools/build/v2/engine/filent.c
--- a/boost_1_54_0/tools/build/v2/engine/filent.c	2013-05-20 21:14:18.000000000 -0700
+++ b/boost_1_54_0/tools/build/v2/engine/filent.c	2013-11-04 09:38:56.820120200 -0800
@@ -59,6 +59,8 @@
     LIST * files = L0;
     int d_length;
 
+    printf("scanning %s\n", object_str(d->name));
+
     assert( d );
     assert( d->is_dir );
     assert( list_empty( d->files ) );
@@ -97,6 +99,7 @@
         HANDLE const findHandle = FindFirstFileA( pathspec->value, &finfo );
         if ( findHandle == INVALID_HANDLE_VALUE )
         {
+            printf("failed scanning in FindFirstfileA(%s)\n", pathspec->value);
             string_free( pathspec );
             return -1;
         }
@@ -122,6 +125,14 @@
                 ff->is_file = !ff->is_dir;
                 ff->exists = 1;
                 timestamp_from_filetime( &ff->time, &finfo.ftLastWriteTime );
+                printf("file_dirscan found %s: ", object_str(ff->name));
+                if(ff->is_dir)
+                    printf("directory");
+                if(!ff->exists)
+                    printf("missing");
+                if(ff->is_file)
+                    printf("file");
+                printf("\n");
             }
         }
         while ( FindNextFile( findHandle, &finfo ) );
@@ -133,6 +144,11 @@
     string_free( pathspec );
 
     d->files = files;
+
+    printf("done scanning %s: (", object_str(d->name));
+    list_print(files);
+    printf(")\n");
+
     return 0;
 }
 
@@ -256,8 +272,20 @@
     OBJECT * parent;
     file_info_t * parent_info;
 
+    printf("file_query(%s)\n", pathstr);
+
     if ( try_file_query_root( info ) )
+    {
+        printf("file_query(%s): ", pathstr);
+        if(info->is_dir)
+            printf("directory");
+        if(!info->exists)
+            printf("missing");
+        if(info->is_file)
+            printf("file");
+        printf("\n");
         return;
+    }
 
     if ( ( dir = strrchr( pathstr, '\\' ) ) )
     {
@@ -285,6 +313,14 @@
         if ( list_empty( parent_info->files ) )
             file_collect_dir_content_( parent_info );
     }
+    printf("file_query(%s): ", object_str(info->name));
+    if(info->is_dir)
+        printf("directory");
+    if(!info->exists)
+        printf("missing");
+    if(info->is_file)
+        printf("file");
+    printf("\n");
 }
 
 
Only in a/boost_1_54_0/tools/build/v2/engine/: filesys.c