Correction -- and sincere apologies for the error / spamming:

==8<==

Configure succeeded with:

--with-cc-opt="-march=native -mtune=native -DTCP_FASTOPEN=23 -g -O3 -fstack-protector-strong -flto -ffat-lto-objects -fuse-ld=gold --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wimplicit-fallthrough=0 -Wno-deprecated-declarations -fcode-hoisting -Wp,-D_FORTIFY_SOURCE=2"

==8<==