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xz backdoor and autotools insanity - FelipeC
(felipec.wordpress.com)
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The blog says this, too, but the configure script generated by autotools can become very different depending on the autotools version. Therefore, checking the git diff for security reasons is very difficult. You get thousands of lines of diffs (in sh!) often without proper comment. The git commit message doesn't help because the best you can understand from there is that someone used their own autotools version.
Nobody has the time to check the thousands of lines of crap in one git diff. Or maybe millions of them.