Date: Sun, 5 Feb 2023 02:56:59 +0000 From: Alexey Dokuchaev <danfe@freebsd.org> To: Jan Beich <jbeich@freebsd.org> Cc: ports-committers@freebsd.org, dev-commits-ports-all@freebsd.org, dev-commits-ports-main@freebsd.org Subject: Re: git: 84ba2383e7be - main - games/openenroth: unbreak the port's build in pre-C++20 environments Message-ID: <Y98a%2B3nFGOVgGbGu@FreeBSD.org> In-Reply-To: <v8kh-4g0d-wny@FreeBSD.org> References: <202302041511.314FBD0R014553@gitrepo.freebsd.org> <v8kh-4g0d-wny@FreeBSD.org>
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On Sat, Feb 04, 2023 at 04:17:06PM +0100, Jan Beich wrote:
> Alexey Dokuchaev <danfe@FreeBSD.org> writes:
> ...
> > +.if !exists(/usr/include/c++/v1/concepts)
> > +BUILD_DEPENDS+= ${LOCALBASE}/include/boost/unordered_map.hpp:devel/boost-libs
> > +USES+= llvm:13
> > +CXX= ${LLVM_PREFIX}/bin/clang++
>
> Beware, setting CXX but not CC can break WITH_LTO. Compiler bitcode is
> generally not compatible between different compiler versions/vendors.
Interesting. At first I've started to spell out all variables (CC, CPP,
CXX) but then decided to test how stable C ABI is. :-)
I don't know about LTO, but failure to link C code generated by different
compilers looks more like the bug in the compilers, no?
./danfe
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