# HG changeset patch
# User Ivan Pozdeev <vano@mail.mipt.ru>
# Date 1532394555 25200
# Node ID 0ef51b53d1c169c49e78d24c34e18e3cdb82bb40
# Parent  2f009f26663d7e135c908cbe116c5c0009a3fb5e
Bug 1323381 - Make 8dot3 error message useful for fixing; r=gps

diff --git a/build/moz.configure/util.configure b/build/moz.configure/util.configure
--- a/build/moz.configure/util.configure
+++ b/build/moz.configure/util.configure
@@ -141,18 +141,22 @@ def normalize_path():
             if quote(path) == path:
                 return path
             size = 0
             while True:
                 out = ctypes.create_unicode_buffer(size)
                 needed = GetShortPathNameW(path, out, size)
                 if size >= needed:
                     if ' ' in out.value:
-                        die("GetShortPathName returned a long path name. "
-                            "Are 8dot3 filenames disabled?")
+                        die("GetShortPathName returned a long path name: `%s`. "
+                            "Use `fsutil file setshortname' "
+                            "to create a short name "
+                            "for any components of this path "
+                            "that have spaces.",
+                            out.value)
                     return normsep(out.value)
                 size = needed
 
     else:
         def normalize_path(path):
             return normsep(path)
 
     return normalize_path