Thank you, that was indeed the problem!

http://search.cpan.org/dist/perl-5.17.10/Porting/bisect-runner.pl#OPTIONS is not very clear about that, I read "-Accflags=-DNO_MATHOMS Arguments to pass to Configure."
While it meant -A, -D and -U arguments were passed to configure.

In reply to Re^2: Using bisect.pl for a thread error by MCMic
in thread Using bisect.pl for a thread error by MCMic

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