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From: Jim Garrison <jim DOT garrison AT nwea DOT org>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: qsort_r and libc.a version?
Date: Thu, 6 Feb 2014 19:04:38 +0000
Message-ID: <0C723FEB5B4E5642B25B451BA57E27307514F78A@S1P5DAG3C.EXCHPROD.USA.NET>
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I tried to build libgit2 so I could try to build gitg but encountered

    undefined reference to `qsort_r'

GitHub has a closed issue for this https://github.com/libgit2/libgit2/issues/1606 saying that qsort_r was added to glibc in version 2.8, released in 2008.

Since libc in Cygwin is part of the base package, how would I find out which upstream version it's based on?  

There was a commit in libgit2 that was supposed to fix this :

https://github.com/libgit2/libgit2/commit/0d77647adc1f76df66e437e6442d7f7706e2c38e#diff-bb2cd4651768482b99cb1c52d29ceffdR694

but I don't know enough about Cygwin internals to determine why it still fails on Cygwin.

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