libtool.m4 and ar conflict

[EvgenijM86]

After upgrading from 14.04 to 16.04 I cannot compile bitcoin software. It seems autoreconf copies this file:

/usr/share/aclocal/libtool.m4

to generate local libtool executable. It sets ${AR_FLAGS=cru} inside libtool, but this setting does not work with ar that was supplied to me with 16.04 update. It seems ar was compiled with --enable-deterministic-archives option, which results in this error:

/usr/bin/ar: `u' modifier ignored since `D' is the default (see `U')

To fix this error one needs to set "Ucru" flags instead of "cru". But "cru" is set as system default for autoreconf for some reason.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

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