[cmake-developers] target_compile_features remaining issues

[Rolf Eike Beer]

Am 08.04.2014 11:43, schrieb Stephen Kelly:
> Rolf Eike Beer wrote:
> 
>>> Of course, it is easier to get features into the 
>>> CMAKE_CXX_KNOWN_FEATURES
>>> list when there is only one compiler to test for on the dashboard.  
>>> I'll
>>> add one C++98 feature to establish the infrastructure, but I don't 
>>> intend
>>> to be exhaustive about C++98 features. If you or anyone else has an
>>> interest in doing so, I'd recommend getting them in early.
>> 
>> Cool. I think it would be good to get the stuff that is enabled by the
>> "-AA +hpxstd98" calls on HP-UX 11i into such a feature so we can make 
>> the
>> "complex" testcase just select whatever is needed automatically 
>> instead of
>> fiddling around to get the magic flags getting passed into that test 
>> to
>> make the C++ compiler behave like something useful.
> 
> Ok, I don't know anything about the features or flags of that compiler.
> 
> What features do you have in mind to add?

Working <iostream> (IIRC), or anything in std namespace. Basically it 
looks like the old HP compiler needs +hpxstd98 as compile flag to behave 
like a C++98 compiler at all, likely because that compiler line is 
indeed older than 1998 and that simply is not the default as for later 
versions of that compiler. And the -AA flag is also needed for, uhm, 
something, at least CMake doesn't build without it.

Eike