Debian SYMPHONY libs and clang

[Kurt Hornik]

Dear maintainers,

When using the SYMPHONY libraries in testing/unstable with clang, I run
into errors like

  /usr/lib/x86_64-linux-gnu/libSym.so.3: undefined symbol:
    omp_get_thread_num

because clang currently does not support OpenMP.

Would it be possible for the time being to actually build the SYMPHONY
libraries with OpenMP support disabled (i.e., configuring with
--disable-openmp)?

Best
-k