Build failure with latest Open DPC++ (LLVM) compiler

[sknepper]

Testing with the recent fix to the oneMKL interfaces repository (https://github.com/oneapi-src/oneMKL/pull/534), I'm seeing build failures in portBLAS with the LLVM compiler. There are errors like:

In file included from /.../build/deps/portblas-src/src/portblas.hpp:33:
/.../build/deps/portblas-src/src/interface/blas1_interface.hpp:358:24: error: a template argument list is expected after a name prefixed by the template keyword [-Wmissing-template-arg-list-after-template-kw]
   358 |     sb_handle.template release_temp_mem({*ret.rbegin()}, gpu_res);
       |                        ^

/.../build/deps/portblas-src/src/interface/blas3/backend/default.hpp:58:20: error: a template argument list is expected after a name prefixed by the template keyword [-Wmissing-template-arg-list-after-template-kw]
    58 |           template _select_gemm(sb_handle, _M, _N, _K, _alpha, _a, _lda,
       |                    ^

And similar in other files. This seems to happen for all hardware (x86, Intel GPU, NVIDIA GPU, and AMD GPU), but only with the LLVM compiler. The LLVM compiler from around July 11 was tested. Thanks!

[Rbiessy]

Thank you for the issue @sknepper. Yes this is due to a recent breaking change in the compiler. We'll look into this.

[Rbiessy]

The PR was merged.