commit c1c1b5267fd5e14be531a4b22ed0124b35d427cb
from: sean <phonologus@gmail.com>
via: David du Colombier <0intro@gmail.com>
date: Thu Apr 30 18:51:47 2020 UTC

9c: added explicit -fcommon to gcc defaults.

Version 10 of gcc enforces -fno-common which breaks a lot of things.

This fix reverts to the pre-10 behaviour. The real fix is to clean up
stray redefinitions which should be declarations.

commit - 4650064aa757c217fa72f8819a2cf67c689bcdef
commit + c1c1b5267fd5e14be531a4b22ed0124b35d427cb
blob - b07d01492bbb11321327389b4642e49ec7ebf422
blob + 0f836d241724b45023f6e603bcb4951e41066291
--- bin/9c
+++ bin/9c
@@ -20,6 +20,7 @@ usegcc()
 		-Wno-format-truncation \
 		-fno-omit-frame-pointer \
 		-fsigned-char \
+		-fcommon \
 	"
 	# want to put -fno-optimize-sibling-calls here but
 	# that option only works with gcc3+ it seems