From c60252ac2b636c4d99b766a574b9df0966151696 Mon Sep 17 00:00:00 2001
From: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Date: Fri, 17 Apr 2020 13:49:28 +0200
Subject: [PATCH] bitbang: Fix FTBFS with GCC 10

GCC 10 defaults to -fno-common which breaks the sharing of bitbang_swd
struct between bitbang drivers due to a missing extern.

Change-Id: I2b4122f7939cec91a72284006748f99a23548324
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/5592
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Jonathan McDowell <noodles-openocd@earth.li>

Patch taken from upstream: https://github.com/ntfreak/openocd/commit/c60252ac2b636c4d99b766a574b9df0966151696
Signed-off-by: Heiko Thiery <heiko.thiery@gmailcom>
---
 src/jtag/drivers/bitbang.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/jtag/drivers/bitbang.h b/src/jtag/drivers/bitbang.h
index edb779ca..bbbc693d 100644
--- a/src/jtag/drivers/bitbang.h
+++ b/src/jtag/drivers/bitbang.h
@@ -56,7 +56,7 @@ struct bitbang_interface {
 	void (*swdio_drive)(bool on);
 };
 
-const struct swd_driver bitbang_swd;
+extern const struct swd_driver bitbang_swd;
 
 extern bool swd_mode;
 
-- 
2.20.1