In order to support tcc bootstrap with tcc on macOS, we'll need to add -arch <cpu> option to tcc.
It should at least support this option even if nothing is implemented because -arch is now given on macOS because of this new configure test:
+# on OSX M1 with --cpu=x86_64, build a tcc to run under rosetta entirely
+if test "$darwin" = "yes" -a "$cpu" = "x86_64" -a "$cpu_sys" = "arm64"; then
+ CFLAGS="$CFLAGS -arch $cpu"
+ LDFLAGS="$LDFLAGS -arch $cpu"
+fi