arm64 config error

[Ajay Panyala]

Am trying to build BLIS with config=arm64 and see the following error

config/arm64/make_defs.mk:71: *** gcc or clang is required for this configuration.. Stop.

armclang --version
Arm C/C++/Fortran Compiler version 20.3 (build number 543) (based on LLVM 9.0.1)
Target: aarch64-unknown-linux-gnu

[Devin Matthews]

@fgvanzee I guess we need to update the parsing to treat this as clang X.Y.Z as indicated in the "based on"?

[Field G. Van Zee]

Thanks for taking care of this.