[cfe-dev] Using libcxx and libcxxabi from a build tree on OS X

[Eric Fiselier]

Fix up for review as http://reviews.llvm.org/D7773.

On Thu, Feb 19, 2015 at 5:18 PM, Eric Fiselier <eric at efcs.ca> wrote:
>>Also, maybe I don't understand CMake well enough, but it doesn't
>>seem like LIBCXX_LIBCPPABI_VERSION is ever populated and that
>>ABI version 1 will always be chosen.
>
> That's the bug. It should be populated with "2" as far as I know.
>
> On Thu, Feb 19, 2015 at 2:03 PM, Meador Inge <meadori at gmail.com> wrote:
>> On Thu, Feb 19, 2015 at 10:53 AM, Eric Fiselier <eric at efcs.ca> wrote:
>>
>>> It looks like we are selecting the wrong libc++abi symbol list when
>>> linking libc++. I'll try and get a fix in today.
>>
>> I am using OS X 10.9.5 and CMake to build.
>>
>> It isn't readily apparent how the symbols in the .exp files are chosen
>> or ordered.  However, adding the following fixed my issue (I can apply
>> this if y'all deem it to be correct):
>>
>> diff --git a/lib/libc++abi.exp b/lib/libc++abi.exp
>> index 87035b2..db965cd 100644
>> --- a/lib/libc++abi.exp
>> +++ b/lib/libc++abi.exp
>> @@ -157,3 +157,10 @@ __ZTIy
>>  __ZTIx
>>  __ZTIw
>>  __ZTIv
>> +__ZSt13get_terminatev
>> +__ZSt13set_terminatePFvvE
>> +__ZSt14get_unexpectedv
>> +__ZSt14set_unexpectedPFvvE
>> +__ZSt15get_new_handlerv
>> +__ZSt15set_new_handlerPFvvE
>> +__ZSt9terminatev
>>
>> Also, maybe I don't understand CMake well enough, but it doesn't
>> seem like LIBCXX_LIBCPPABI_VERSION is ever populated and that
>> ABI version 1 will always be chosen.
>>
>> --
>> # Meador