[Bug binutils/21702] ar cannot handle (slim) LTO object files when in MRI script mode

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=21702

Nick Clifton <nickc at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |nickc at redhat dot com

--- Comment #2 from Nick Clifton <nickc at redhat dot com> ---
Hi Martin,

  This is a build/system installation issue more than anything.  Assuming 
  that ar has been configured with --enable-plugins set[1] then the problem
  is that ar is not finding the plugin that it needs.  They are two ways 
  that it can find the plugin.  The first is via a command line option to ar 
  itself, vis: --plugin=<path-to-gcc-lto-plugin>.  This is the better 
  solution, IMHO, although it does mean that you will have to update your 
  build framework.

  The second method is that ar (and the other binutils that support plugins)
  will look in the directory /usr/lib/bfd-plugins for the plugin.  So if you
  copy gcc's liblto_plugin into this directory everything should start to 
  work.  I am not a fan of this method since it relies upon having admin
  access on the build machine, and it is easy to forget that the directory
  is there, and then have problems because an out of date plugin is being 
  used.

Cheers
  Nick

[1] I am not familiar with Arch Linux, but I suspect that plugin support
is probably enabled.  Most distributions do that now.

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