From owner-freebsd-ports-bugs@freebsd.org Sun Jan 22 19:26:26 2017 Return-Path: Delivered-To: freebsd-ports-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2E8F1CBDCA3 for ; Sun, 22 Jan 2017 19:26:26 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1DA577E0 for ; Sun, 22 Jan 2017 19:26:26 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v0MJQOSU061465 for ; Sun, 22 Jan 2017 19:26:25 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-ports-bugs@FreeBSD.org Subject: [Bug 216054] graphics/openshadinglanguage: fails to build with libc++ 4.0 Date: Sun, 22 Jan 2017 19:26:25 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Individual Port(s) X-Bugzilla-Version: Latest X-Bugzilla-Keywords: needs-patch X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: dim@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-ports-bugs@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-ports-bugs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Ports bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Jan 2017 19:26:26 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D216054 --- Comment #3 from Dimitry Andric --- (In reply to Jan Beich (mail not working) from comment #1) > libc++ 4.0 is just broken with old compilers. One workaround would be to > build against devel/libc++ which tracks old version. >=20 > $ cat a.cc > #include >=20 > int main() { return 0; } >=20 > $ clang++34 a.cc > In file included from a.cc:1: > In file included from /usr/include/c++/v1/string:470: > In file included from /usr/include/c++/v1/string_view:171: > In file included from /usr/include/c++/v1/__string:56: > In file included from /usr/include/c++/v1/algorithm:637: > /usr/include/c++/v1/type_traits:2075:14: error: expected class name > : public decltype((_VSTD::__is_assignable_test<_Tp, _Arg>(0))) {}; > ^ > /usr/include/c++/v1/__config:747:25: note: expanded from macro 'decltype' > # define decltype(__x) __typeof__(__x) > ^ > 1 error generated. Hm, yes that is pretty unfortunate. Not that you can guarantee forwards compatibility forever, of course, but in this case it falls over a C++11 construct, while in C++98 (or GNU++98) mode. It looks like before libc++ r276599, there was a fallback mode for _LIBCPP_HAS_NO_RVALUE_REFERENCES, but that disappeared. Eric, how tricky w= ould it be to put that back? --=20 You are receiving this mail because: You are the assignee for the bug.=