commit 69439fae6705a125047246c889384ed3aeb4d104
from: Russ Cox <rsc@swtch.com>
date: Wed Dec 30 05:06:35 2020 UTC

9c: use -fcommon for clang

Fixes #469.

commit - 2991442aef1cf020ffde43673433ee97ef322a53
commit + 69439fae6705a125047246c889384ed3aeb4d104
blob - 59adda7f432fa1258e694059f7517af738fb24fa
blob + 9dfc082e56bacbf5f7d12e415fcfcc9c8c7948ab
--- bin/9c
+++ bin/9c
@@ -83,6 +83,7 @@ useclang()
 		-Wno-unneeded-internal-declaration \
 		-fsigned-char \
 		-fno-caret-diagnostics \
+		-fcommon \
 	"
 	cflags="$cflags -g"
 	cflags="$cflags $CC9FLAGS"