Re: [gentoo-alt] Prefix on Sierra: ObjC broken with clang-3.8

[Fabian Groffen]

llvm-3.9.1 is in the tree now, unmasked.  libcxx*-3.9 also.
Bootstrapping seems to work to a certain extent now too.  I managed to
mess up darwin-miscutils, but that's fixed in the tree already.  When I
release a new snapshot tomorrow, that should be sorted too.

I got reports that with llvm-3.9 glib compiles too, so it looks
promising.

Fabian


On 31-10-2016 12:05:08 +0100, Michael Weiser wrote:
> Hi,
>
> thanks for the quick responses.
>
> On Mon, Oct 31, 2016 at 08:03:18AM +0100, Fabian Groffen wrote:
>
> > Xcode 8.1 is upgraded on my box as we speak, so I guess the same
> > problem will appear then for upgrading packages that use affected headers.
>
> I had this problem with Xcode 8.0 already and upgraded to 8.1 just a few
> days ago after I already had llvm-3.9.0 in my prefix.
>
> > On 30-10-2016 21:20:33 +0100, Askar Bektassov wrote:
>
> > > I am running prefix on Sierra, without issues. Please note, however, that I
> > > bootstrapped when I was still on El Capitan.
>
> Okay, then I'll attribute my problems for now to my creative way of
> changing the CHOST from *-darwin15 to *-darwin16 without
> rebootstrapping. That might have caused some kind of temporary glitch. I doubt
> it though.
>
> If the problem surfaces for someone else, feel free to drop me a line
> and try the following: The llvm-3.9.0-r1 ebuild needs the following use
> flag to configure correctly:
>
> sys-devel/llvm llvm_targets_X86
>
> That's done in profiles/arch/amd64/package.use.force but doesn't seem to carry
> into Prefix (for me at least). If missing, the result will be a compiler
> that compiles and installs fine but isn't able to actually generate
> binaries for x86/x64.
>
> And it needs this patch to install correctly because get_abi_CHOST returns an
> empty string on my system:
>
> --- ../../../../portage/sys-devel/llvm/llvm-3.9.0-r1.ebuild	2016-10-27 11:30:20.000000000 +0200
> +++ llvm-3.9.0-r1.ebuild	2016-10-31 11:49:26.000000000 +0100
> @@ -470,6 +470,7 @@
>  		# now create target symlinks for all supported ABIs
>  		for abi in $(get_all_abis); do
>  			local abi_chost=$(get_abi_CHOST "${abi}")
> +			[ -z "$abi_chost" ] && multilib_is_native_abi && abi_chost=${CHOST}
>  			for i in "${clang_tools[@]}"; do
>  				dosym "${i}-${clang_version}" \
>  					"/usr/bin/${abi_chost}-${i}-${clang_version}"
>
> Beware also: libLTO.dylib changes its install name which will break ld64 if
> linked against it. So before upgrading llvm you should install a non-LTO
> version of binutils apple e.g. by running USE="-lto" emerge -1 binutils-apple.
>
> Together with the 3.9.0-libc++{,abi} ebuilds from
> https://bugs.gentoo.org/show_bug.cgi?id=538364 everything works fine for me
> now.
>
> BTW: I'll be away from my mail starting today till Saturday.
> --
> Thanks,
> Michael
>

-- 
Fabian Groffen
Gentoo on a different level