commit d4a161552becafeb1ebb98ec7e28675cb25fc548
author Gao Xiang <gaoxiang25@huawei.com> Sat Mar 14 18:52:56 2020 +0800
committer Gao Xiang <gaoxiang25@huawei.com> Fri Mar 27 16:52:31 2020 +0800
tree f29e7ec3c211fb8f382965b63351104cc0a74bde
parent acd5f76653d0b455de537a271dca93ddc1c4f2e3

erofs-utils: avoid _LARGEFILE64_SOURCE and _GNU_SOURCE redefinition

This patch can be used to resolve the following build errors:

compress.c:10: error: "_LARGEFILE64_SOURCE" redefined [-Werror]
 #define _LARGEFILE64_SOURCE

<command-line>: note: this is the location of the previous definition

io.c:9: error: "_LARGEFILE64_SOURCE" redefined [-Werror]
 #define _LARGEFILE64_SOURCE

<command-line>: note: this is the location of the previous definition

Link: https://lore.kernel.org/r/20200314105256.20142-1-hsiangkao@aol.com
Reviewed-by: Li Guifu <bluce.lee@aliyun.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>

lib/compress.c

diff --git a/lib/compress.c b/lib/compress.c
index 8337487..b14ff17 100644
--- a/lib/compress.c
+++ b/lib/compress.c
@@ -7,7 +7,9 @@
  * Created by Miao Xie <miaoxie@huawei.com>
  * with heavy changes by Gao Xiang <gaoxiang25@huawei.com>
  */
+#ifndef _LARGEFILE64_SOURCE
 #define _LARGEFILE64_SOURCE
+#endif
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>

lib/io.c

diff --git a/lib/io.c b/lib/io.c
index 52f9424..5b998d8 100644
--- a/lib/io.c
+++ b/lib/io.c
@@ -6,8 +6,12 @@
  *             http://www.huawei.com/
  * Created by Li Guifu <bluce.liguifu@huawei.com>
  */
+#ifndef _LARGEFILE64_SOURCE
 #define _LARGEFILE64_SOURCE
+#endif
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 #include "erofs/io.h"