Index: sdk/tools/cabman/dfp.cxx
===================================================================
--- sdk/tools/cabman/dfp.cxx	(revision 73519)
+++ sdk/tools/cabman/dfp.cxx	(working copy)
@@ -278,6 +278,9 @@
     if (!FileLoaded)
         return CAB_STATUS_NOFILE;
 
+    OptionalSkipped = 0;
+    SkippedFileOutput = NULL;
+
     while (ReadLine())
     {
         Command = false;
@@ -387,6 +390,13 @@
         }
     }
 
+    if (SkippedFileOutput)
+    {
+        printf("%lu Optional files skipped (see %s%s)\n", OptionalSkipped, GetDestinationPath(), "skipped.txt");
+        CloseFile(SkippedFileOutput);
+        SkippedFileOutput = NULL;
+    }
+
     if (!InfFileOnly)
     {
         if (CABMgr.IsVerbose())
@@ -1223,7 +1233,16 @@
             if (strstr(Options,"optional"))
             {
                 Status = CAB_STATUS_SUCCESS;
-                printf("Optional file skipped (does not exist): %s.\n", SrcName);
+                if (SkippedFileOutput == NULL)
+                {
+                    char buf[MAX_PATH];
+                    strcpy(buf, GetDestinationPath());
+                    strcat(buf, "skipped.txt");
+                    SkippedFileOutput = fopen(buf, "wb");
+                }
+
+                OptionalSkipped++;
+                fprintf(SkippedFileOutput ? SkippedFileOutput : stdout, "Optional file skipped (does not exist): %s.\n", SrcName);
             }
             else
                 printf("ERROR: File not found: %s.\n", SrcName);
Index: sdk/tools/cabman/dfp.h
===================================================================
--- sdk/tools/cabman/dfp.h	(revision 73519)
+++ sdk/tools/cabman/dfp.h	(working copy)
@@ -107,6 +107,8 @@
     ULONG LineLength;
     ULONG CurrentLine;
     ULONG CurrentChar;
+    ULONG OptionalSkipped;
+    FILE* SkippedFileOutput;
     /* Token */
     DFP_TOKEN CurrentToken;
     ULONG CurrentInteger;