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All of a sudden I've been getting the following error (something probably updated my gcc or something):

lto1: fatal error: bytecode stream generated with LTO version 4.0 instead of the expected 4.1

However, I'm not exactly sure which library is causing it. How would I find out?

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  • Same problem here. Linker is giving the error. Just went and cloned a project and trying to build it... Ubuntu 16.04 LTS.
    – winwaed
    Jul 26, 2016 at 14:20
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    Followup: Just rebuild all your libraries. I was using OSRM - build clean followed by a rebuild fixed it. So yes I think GCC was recently updated in the past week or so...
    – winwaed
    Jul 26, 2016 at 14:34
  • @winwaed what are "all" your libraries?
    – isomorphismes
    Mar 8, 2017 at 18:30
  • I got this error and switched my compiler from gcc to clang. export CC=clang; export CCX=clang++; ./configure; make. Feels like the wrong solution but kind of worked.
    – isomorphismes
    Mar 8, 2017 at 18:31
  • @iso these were the libraries in the osrm make. Over 6 months ago now but i'm pretty certain i didn't have to reinstall anything
    – winwaed
    Mar 8, 2017 at 18:33

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