[PATCH 3/4] makedumpfile: add -D_GNU_SOURCE to CFLAGS

[Wang Nan]

This patch is preparation for introduce pread/pwrite.

Signed-off-by: Wang Nan <wangnan0 at huawei.com>
Cc: Atsushi Kumagai <kumagai-atsushi at mxc.nes.nec.co.jp>
Cc: Petr Tesarik <ptesarik at suse.cz>
Cc: kexec at lists.infradead.org
Cc: Geng Hui <hui.geng at huawei.com>
Cc: Liu Hua <sdu.liu at huawei.com>
---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 68db947..1c65e61 100644
--- a/Makefile
+++ b/Makefile
@@ -9,11 +9,11 @@ CC	= gcc
 endif
 
 CFLAGS = -g -O2 -Wall -D_FILE_OFFSET_BITS=64 \
-	  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE \
+	  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_GNU_SOURCE \
 	  -DVERSION='"$(VERSION)"' -DRELEASE_DATE='"$(DATE)"' \
 	  -I/home/w00229757/makedumpfile/elfutils-root/include
 CFLAGS_ARCH	= -g -O2 -Wall -D_FILE_OFFSET_BITS=64 \
-		    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
+		    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_GNU_SOURCE
 # LDFLAGS = -L/usr/local/lib -I/usr/local/include
 LDFLAGS = -L/home/w00229757/makedumpfile/elfutils-root/lib
 
-- 
1.8.4