Tom G. Christensen wrote:
Do note though that since you changed the witness symbol in 0f336e1192 the gnulib POSIX thread support has been unbuildable on Solaris < 7.
Although it's fine if Bruno fixes that, it's not necessary as Sun stopped supporting Solaris 6 long ago. Generally speaking we needn't bother supporting an operating system if even its maintainer doesn't support it any more. Since Oracle stopped supporting Solaris 9 in 2014 we no longer need to support it or earlier Solaris versions.