[cfe-dev] clang -cxx-abi OR clang -Xclang -cxx-abi?

[Charles Davis]

On Nov 8, 2012, at 4:44 AM, pravic wrote:

> Hi.
> 
> clang --help tells about -cxx-abi parameter, but it not works:
> 
> $ clang -cxx-abi microsoft foo.cpp
> clang: warning: argument unused during compilation: '-cxx-abi microsoft'
> 
> 
> Instead of it, you need to pass this option to CC1 directly:
> $ clang -Xclang -cxx-abi -Xclang microsoft
> 
> But this is not equal with help. So how to fix?
As I recall, this happened when the driver Option tables and the -cc1 Option tables were merged; the right fix is probably not to list -cc1 options with no driver support in the driver's help :).

As for making -cxx-abi a driver option: the alternate C++ ABI code isn't production-ready yet, and it probably won't be for a while now.

Chip

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