feb30f25c0
Summary: We originally wanted `-stdlib=libc++` by default so that it could use offloading support in libc++, however this causes issues with out the Offloading proejct itself is built. Is the user builds the LLVM libs with libstdc++ then uses this cache it will enable this option by default for the ensuing build of the offloading libraries with the newly build clang. This will cause a lot of linker failured because the C++ library doesn't match. Long term I think the proper solution to this is to make better use of clang configuration files, but I don't know a good way to do that by default. For now just make it build right.
The LLVM/Offload Subproject
The Offload subproject aims at providing tooling, runtimes, and APIs that allow users to execute code on accelerators or other "co-processors" that may or may not match the architecture of their "host". In the long run, all kinds of targets are in scope of this effort, including but not limited to: CPUs, GPUs, FPGAs, AI/ML accelerators, distributed resources, etc.
For OpenMP offload users, the project is ready and fully usable. The final API design is still under development. More content will show up here and on our webpage soon. In the meantime, people are encouraged to participate in our meetings (see below) and check our development board as well as the discussions on Discourse.
Meetings
Every second Wednesday, 7:00 - 8:00am PT, starting Jan 24, 2024. Alternates with the OpenMP in LLVM meeting. invite.ics Meeting Minutes and Agenda