Xcode: 220.127.116.11.1.1610135815 CommandLineTools: 18.104.22.168.1.1610135815
I've exported CC=clang, but I can't get the emacs-26 branch to compile on my Big Sur Intel machine.
See gist here
.autogen.sh and configure complete without errors. The make is throwing the error. FWIW, version 28 and version 27 compile and install without errors.