Date: Sun, 19 Nov 2017 18:43:25 -0500 From: Pedro Giffuni <pfg@FreeBSD.org> To: Mark Millard <markmi@dsl-only.net>, svn-src-head@freebsd.org Subject: Re: svn commit: r325954 - in head: . share/mk sys/conf usr.sbin/config Message-ID: <26aaac2e-01d5-a11c-1182-39363d5cafc5@FreeBSD.org> In-Reply-To: <59284FA3-1659-49D0-A860-366B98B02209@dsl-only.net> References: <59284FA3-1659-49D0-A860-366B98B02209@dsl-only.net>
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.... On 19/11/2017 17:38, Mark Millard wrote: > Pedro Giffuni pfg at FreeBSD.org wrote on > Sun Nov 19 15:29:33 UTC 2017 : > >> Yes, we should >> avoid breaking existing stuff (however old) in ports but no one is >> expecting to build modern FreeBSD with gcc 3.4 or even gcc 4.1. We did >> what we could with gcc 4.2.1 but it's time is also over. > Unfortunately for powerpc64 no alternative > works fully. For example: > > A) With a buildworld by clang and C++ programs linked against > the system libraries, any C++ exception thrown causes the > program to crash: clang generates bad code in the library. > > B) Modern gcc's build a lib32 based on generating a messed up > crtbeginS.o content (bad register usage) and so 32-bit > programs crash. > > As far as I know gcc 4.2.1 is still the only environment that > generally works for powerpc64. Hmm ... At some point some of the newer GCC was generating good code. I have had reports of openoffice-devel working on FreeBSD powerpc64 and, even on x86, openoffice stopped building with our base gcc. > [There is no devel/powerpc-gcc like there is a devel/powerpc64-gcc > and I've never managed to to make a working powerpc build from a > gcc other than 4.2.1 . (A) prevents clang from counting as working > overall. So powerpc may be in the same boat as powerpc64 as far as > having a known way to build without gcc 4.2.1 goes.] At least PPC64 is alive, I am afraid that I don't see a solution for sparc64. But this is very off-topic to lint issue :). Pedro.
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