[Bug ld/30568] --dependency-file includes temporary LTO files

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=30568

--- Comment #1 from Nick Clifton <nickc at redhat dot com> ---
Created attachment 14940
  --> https://sourceware.org/bugzilla/attachment.cgi?id=14940&action=edit
Proposed patch

Hi Nikita,

  Please could you try out the uploaded patch and let me know what you think.

  I have a couple of concerns with the patch.  The first is that it uses a 
  simple heuristic to detect LTO generated filenames.  I have no idea how
  robust this will be.

  The second is that the patch strips the filenames from the command line that
  forms the first part of the dependency file, as well as the list of files
  that comes afterwards.  I ma not sure if this is the correct thing to do.
  Maybe the command line should remain unfiltered.

Cheers
  Nick

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