Re: HEADS UP: merged llvm/clang 3.4


>> > I understand that installing gdb from ports, changing compiler
>> > flags from -g to -gdwarf-2 in Makefiles, or switching to compiling
>> > with gcc are all reasonable workarounds, but this seems a bit like
>> > POLA for a stable branch.
>> 
>> Yeah, it is really unpleasant.
>> 
>> Maybe we should do something like this for stable/9 and stable/10
>> branches (not tested).
>> 
>> --- contrib/llvm/tools/clang/lib/Driver/Tools.cpp
>> +++ contrib/llvm/tools/clang/lib/Driver/Tools.cpp
>> @@ -2628,8 +2628,9 @@ void Clang::ConstructJob(Compilation &C, const Job
>>        CmdArgs.push_back("-gdwarf-4");
>>      else if (!A->getOption().matches(options::OPT_g0) &&
>>               !A->getOption().matches(options::OPT_ggdb0)) {
>> -      // Default is dwarf-2 for darwin.
>> -      if (getToolChain().getTriple().isOSDarwin())
>> +      // Default is dwarf-2 for Darwin and FreeBSD.
>> +      if (getToolChain().getTriple().isOSDarwin() ||
>> +          getToolChain().getTriple().getOS() == llvm::Triple::FreeBSD)
>>          CmdArgs.push_back("-gdwarf-2");
>>        else
>>          CmdArgs.push_back("-g");
> 
> I'm now testing something similar, which also tests the FreeBSD version,
> so it can be applied to head and then MFC'd.  I will commit it soon.
Glad to hear.  Adding an extra flag, to get applications to a state where
they could be debugged was unexpected.  I am sure I wouldn't have been the
only one surprised to find out that "cc -g" no longer works.

Larry

-- 
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Larry Baird
Global Technology Associates, Inc. 1992-2012 	| http://www.gta.com
Celebrating Twenty Years of Software Innovation | Orlando, FL
Email: lab@gta.com                 		| TEL 407-380-0220
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