[PATCH] Use dwarf-2 by default on OpenBSD and FreeBSD

[Brad Smith]

On 12/06/14 10:38 PM, Eric Christopher wrote:
> On Thu, Jun 12, 2014 at 5:27 PM, Brad Smith <brad at comstyle.com> wrote:
>> On 12/06/14 8:11 PM, Eric Christopher wrote:
>>>
>>> On Thu, Jun 12, 2014 at 5:04 PM, Brad Smith <brad at comstyle.com> wrote:
>>>>
>>>> On 12/06/14 2:17 PM, Eric Christopher wrote:
>>>>>
>>>>>
>>>>> Sad.
>>>>
>>>>
>>>>
>>>> Yes, the real world is sad.
>>>>
>>>>> Why?
>>>>
>>>>
>>>>
>>>> The toolchain won't be changing anytime soon (that would require an
>>>> option
>>>> to be able to move to anyway which there isn't). The current toolchain
>>>> only
>>>> supports DWARF-2.
>>>>
>>>
>>> Any way you can conditionalize this based on OS version that may have
>>> a newer gdb/lldb that'll support non-dwarf2? If not, that's fine.
>>
>>
>> Can you clarify what you have in mind? I'm just getting into hacking on
>> LLVM/Clang but I was thinking maybe having a variable in
>> include/clang/Driver/ToolChain.h and lib/Driver/ToolChains.h that specifies
>> the
>> default DWARF version and whatever the override is that way making
>> it easier to adjust for particular OS versions. I haven't written
>> anything yet it was just an idea after I sent out the initial diff.
>>
>>
>
> Was hoping that you had a, say, freebsd12 that would magically solve
> this problem and you could conditionalize on that.
>
> Sounds like no though :)

Definitely no, but that's not really the point. My point was how to
go about "conditionalizing" the code. So that when and if the time
comes it is easier to change what the default setting is for the
relevant OS's. Anyway, I'll commit this and then see about coming
up with something to conditionalize things and see how whatever I
come up with goes over.

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