[Bug middle-end/63801] error: templates must have C++ linkage when building with isl and clang

[gcc at ryandesign dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63801

--- Comment #5 from Ryan Schmidt <gcc at ryandesign dot com> ---
I see a patch for this has been provided on the mailing list:

https://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg95468.html

It is a long thread and I haven't read all of it.