Re: HEADS-UP: Merged llvm/clang 5.0.0 into -CURRENT (as of r321369)

On Sun, Jul 23, 2017 at 04:13:18PM -0700, Mark Millard wrote:
> Shawn Webb shawn.webb at hardenedbsd.org wrote on
> Sat Jul 22 15:33:14 UTC 2017 :
> 
> > I haven't nailed down whether it's SafeStack, CFI, or using lld as the
> > default linker, but it looks like we in HardenedBSD are getting an
> > undefined symbol during buildworld.
> 
> In an amd64 -> TARGET_ARCH=powerpc64 cross build context 
> for FreeBSD -r321371 I got a similar report for the:
> 
> /usr/obj/usr/src/tmp/usr/bin/ld: error: undefined symbol: lldb_private::AppleObjCRuntime::GetFoundationVersion()
> >>> referenced by /usr/src/contrib/llvm/tools/lldb/source/Plugins/Language/ObjC/Cocoa.cpp
> >>>               Cocoa.o:(lldb_private::formatters::NSNumberSummaryProvider(lldb_private::ValueObject&, lldb_private::Stream&, lldb_private::TypeSummaryOptions const&)) in archive /usr/obj/usr/src/lib/clang/liblldb/liblldb.a
> 
> part of your report (logfile). The context used
> devel/powerpc64-binutils :
> 
> # /usr/local/powerpc64-freebsd/bin/ld --version
> GNU ld (GNU Binutils) 2.28
> Copyright (C) 2017 Free Software Foundation, Inc.
> This program is free software; you may redistribute it under the terms of
> the GNU General Public License version 3 or (at your option) a later version.
> This program has absolutely no warranty.
> 
> (lld is not yet  working option for powerpc64 as
> far as I know.)
> 
> For this part of your report I doubt that anything
> that you listed is required for the problem to happen.
> 
> In my context the error text was:
> 
> --- lldb.full ---
> /usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/usr/src/lib/clang/liblldb/liblldb.a(Cocoa.o): In function `lldb_private::formatters::NSNumberSummaryProvider(lldb_private::ValueObject&, lldb_private::Stream&, lldb_private::TypeSummaryOptions const&)':
> /usr/src/contrib/llvm/tools/lldb/source/Plugins/Language/ObjC/Cocoa.cpp:(.text._ZN12lldb_private10formatters23NSNumberSummaryProviderERNS_11ValueObjectERNS_6StreamERKNS_18TypeSummaryOptionsE+0x398): undefined reference to `lldb_private::AppleObjCRuntime::GetFoundationVersion()'

Hey Mark,

I wasn't doing a cross-build, but rather a native build for amd64. I'm
getting errors again. In fact, I'm getting the same error you just
posted above. I have no clue why the error's happening. That you're
also getting the error shows that the issue isn't specific to
HardenedBSD at the very least.

Thanks,

-- 
Shawn Webb
Cofounder and Security Engineer
HardenedBSD

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