svn commit: r457438 - head/devel/ispc

[Tijl Coosemans]

On Thu, 28 Dec 2017 16:48:09 +0000 Alexey Dokuchaev <danfe at FreeBSD.org> wrote:
> On Thu, Dec 28, 2017 at 01:36:31PM +0000, Alexey Dokuchaev wrote:
>> On Thu, Dec 28, 2017 at 01:29:20AM -0800, Yuri wrote:  
>>> On 12/27/17 23:14, Alexey Dokuchaev wrote:  
>>>> But just couple of days ago X.org/Mesa had switched to 5.0, and
>>>> I'm not sure what to do about this yet.  
>>> 
>>> Please feel free to further update ISPC's clang dependency if you feel
>>> this is needed for embree.  
>> 
>> Yes, that's probably the most straight way forward.  I'm now (re)building
>> all the ports involved (that might take some time on my slow hardware) to
>> verify that CLANG_VERSION=50 does not cause regressions (vs. 40).  
> 
> We have a problem building `devel/ispc' againt LLVM 5.0:
>   ...
>   /usr/local/llvm50/lib/libLLVMSupport.a(Signals.cpp.o): In function `llvm::sys::PrintStackTrace(llvm::raw_ostream&)':
>   /work/a/ports/devel/llvm50/work/llvm-5.0.0.src/lib/Support/Signals.cpp:(.text+0x20e0): undefined reference to `backtrace'
>   clang-5.0: error: linker command failed with exit code 1 (use -v to seeinvocation)
> 
> It builds fine against LLVM 4.0.  Anyone got ideas (I'm too drunk to debug
> this myself now) how do we proceed from here?

"backtrace" is provided by libexecinfo.