From 5d57bdeb239de40d63eb7809a3d3d15dffb51b6b Mon Sep 17 00:00:00 2001
From: David Sterba <dsterba@suse.com>
Date: Sat, 23 Sep 2017 21:53:26 +0200
Subject: btrfs-progs: build: use -std=gnu89 for sparse

Sparse does not seem to support gnu90 that we'd like to keep for the
regular build. Use gnu89 for C=1 build.

Signed-off-by: David Sterba <dsterba@suse.com>
---
 Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 2e8d932b..243701a1 100644
--- a/Makefile
+++ b/Makefile
@@ -62,8 +62,9 @@ DEBUG_LDFLAGS :=
 TOPDIR := $(shell pwd)
 
 # Common build flags
+CSTD = -std=gnu90
 CFLAGS = $(SUBST_CFLAGS) \
-	 -std=gnu90 \
+	 $(CSTD) \
 	 -include config.h \
 	 -DBTRFS_FLAT_INCLUDES \
 	 -D_XOPEN_SOURCE=700  \
@@ -262,6 +263,7 @@ ifdef C
 			grep -v __SIZE_TYPE__ > $(check_defs))
 	check = $(CHECKER)
 	check_echo = echo
+	CSTD = -std=gnu89
 else
 	check = true
 	check_echo = true
-- 
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