GCC vs clang -- cxx11 ABI issue?

Clang Frontend
1

Hi,

I was mixing libraries built with clang and GCC before, but recently I was be an issue:

undefined reference to ‘llvm::sys::getProcessTripleabi:cxx11’

when building with GCC and linking in the LLVM libraries built with clang.

GCC / libstdc++: 5.3.1
clang: 3.8.0

Because the getProcessTriple() returns std::string I suspect that GCC expects the new string ABI to be used here, but looks like clang produced the function with the old version.

Is this a bug?

  • Paweł
2

Probably solved in

http://llvm.org/viewvc/llvm-project?view=revision&revision=274222

3

Ok, thanks.

Will this fix be included in 3.8.1?

4

Good to hear that it fixed your problems. Please let me know if you observe any compatibility issues due to ABI tags with Clang trunk.

5

Yes, it is a bug in GCC that they broke the Itanium ABI by introducing a
custom mangling. Of course, they will tell you that it is a feature...

Joerg