[PATCH 12/18] kbuild: build barebox for -std=gnu11

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

Linux has been configured with -std=gnu11 since v5.18 to benefit from
being able to declare variables in for loops init statements.

This is handy for barebox as well and should we adopt
__attribute__((cleanup)) to simplify resource management, it will become
required anyway, because define __attribute((cleanup)) variables much
earlier than they are used is needlessly cumbersome.

So let's do the switch.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index dc22ea546428..85bc6515d462 100644
--- a/Makefile
+++ b/Makefile
@@ -387,7 +387,7 @@ HOSTCC       = gcc
 HOSTCXX      = g++
 
 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
-			      -O2 -fomit-frame-pointer -std=gnu89
+			      -O2 -fomit-frame-pointer -std=gnu11
 KBUILD_USERCFLAGS  := $(KBUILD_USERHOSTCFLAGS) $(USERCFLAGS)
 KBUILD_USERLDFLAGS := $(USERLDFLAGS)
 
@@ -452,7 +452,7 @@ KBUILD_CPPFLAGS        := -D__KERNEL__ -D__BAREBOX__ $(LINUXINCLUDE) -fno-builti
 KBUILD_CFLAGS   := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
 		   -fno-strict-aliasing -fno-common -fshort-wchar \
                    -Werror=implicit-function-declaration -Werror=implicit-int \
-                   -Os -pipe -Wmissing-prototypes -std=gnu89
+                   -Os -pipe -Wmissing-prototypes -std=gnu11
 KBUILD_AFLAGS          := -D__ASSEMBLY__
 KBUILD_AFLAGS_KERNEL :=
 KBUILD_CFLAGS_KERNEL :=
-- 
2.39.2