Date: Sun, 26 Nov 2017 23:15:53 +0700 From: Alexey Dokuchaev <danfe@nsu.ru> To: Brooks Davis <brooks@freebsd.org> Cc: ports@freebsd.org Subject: Re: RTTI support in devel/llvm40 (and maybe other llvm ports) Message-ID: <20171126161553.GA85450@regency.nsu.ru> In-Reply-To: <20171112124104.GA25053@regency.nsu.ru> References: <20171110070748.GA27570@regency.nsu.ru> <20171112080319.GB76223@spindle.one-eyed-alien.net> <20171112124104.GA25053@regency.nsu.ru>
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On Sun, Nov 12, 2017 at 07:41:04PM +0700, Alexey Dokuchaev wrote: > On Sun, Nov 12, 2017 at 08:03:19AM +0000, Brooks Davis wrote: > > On Fri, Nov 10, 2017 at 02:07:48PM +0700, Alexey Dokuchaev wrote: > > > I've just found out that our `devel/llvm40' port comes without > > > -DLLVM_ENABLE_RTTI=ON on the CMAKE_ARGS. This is a regression > > > from e.g. 3.4 times when it was enabled by default. > > > > > > The problem is that RTTI support is required by some consumers, > > > e.g. `graphics/openshadinglanguage' and `graphics/appleseed' > > > (cf. https://github.com/appleseedhq/appleseed/issues/1625), > > > but I cannot enable RTTI in those ports unless I enable it in > > > LLVM port(s) first. > > > > It's been a few years since we disabled it so I don't remember the > > details of the decision. I'll look into it, but am not in a position > > to test for breakage to other ports. > > Well it's probably OK to expect users or maintainers of those ports > would speak up if enabling RTTI breaks their software. :-) > > > IIRC there were once ports that failed to build both with and > > without so it may be that we need to wait for flavors to make this > > change. > > Hmm, that's weird: I'd expect it is easier to *not* use RTTI when > one does not need it than try to find the way around when it is not > available (which might not be possible). I also don't see why we > should wait for FLAVORS: if needed, we can always make it optional > (cf. existing EXTRAS LIT LLD LLDB options) but enabled by default. Did you have a chance to make up your mind on this? (If you worry that enabling RTTI might break some ports we can always ask portmgr@ for an exp-run). ./danfe
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