[tcecc] C++11 support?

[alekob]

Hi,
I'd like to compile C++11 code on a TTA system, stdc++ lib is necessary. As the installation procedure in TCE for LLVM differs from the "getting started" page (https://llvm.org/docs/GettingStarted.html), I'd like to ask how to install libcxx and libcxxabi to work with tcecc?

[pjaaskel]

I don't think this has been tried by anyone yet. While I think most c++11 language features should just work, no one has ported a C++ standard library so far. Our group has focused on C and OpenCL C. It would be great if someone ported it though!

[alekob]

Tried to extend the installation script for LLVM 8.0 to compile libc++, libc++abi. The build process seems to work, but the compilation of the project's C++ code results in several errors:

/home/alex/apps/LLVM/8.0/include/c++/v1/__config:63:4: error: Unknown object file format

error Unknown object file format

^
/home/alex/apps/LLVM/8.0/include/c++/v1/__config:1172:6: error: "No thread API"

error "No thread API"

...
/home/alex/apps/LLVM/8.0/include/c++/v1/atomic:1855:16: error: use of undeclared identifier 'int_least64_t'
typedef atomic<int_least64_t> atomic_int_least64_t;
...

[hkultala]

TCE does not yet support 64-bit simple data types. This is the reason the int_least64_t is not supported.

[alekob]

How about the version on branch "64bit"? Does it support simple 64 bit types or is there a way for a "software emulation" like "-swfp"?