the clang compiler does not support '-march=native'

From: tech-lists <tech-lists_at_zyxst.net>
Date: Mon, 14 Jun 2021 20:08:11 UTC
Hi,

There's a program I'd like to compile, but I'm getting an error "the
clang compiler does not support '-march=native'"

% clang --version
FreeBSD clang version 11.0.1 (git@github.com:llvm/llvm-project.git
llvmorg-11.0.1-0-g43ff75f2c3fe)
Target: aarch64-unknown-freebsd13.0
Thread model: posix
InstalledDir: /usr/bin

Is this because I have this in /etc/src.conf:

WITHOUT_LLVM_TARGET_ALL=
WITH_LLVM_TARGET_AARCH64=
WITH_LLVM_TARGET_ARM=

(this is on a rpi4 arm64.aarch64)

thanks,
-- 
J.