From: Ross Zwisler Date: Thu, 7 Dec 2017 21:35:01 +0000 (-0700) Subject: build: fix _BSD_SOURCE complier warning X-Git-Tag: v2022.05.01~1743 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=8b71ca416246277481aee2dd74684797dd01101f;p=users%2Fhch%2Fxfstests-dev.git build: fix _BSD_SOURCE complier warning When compiling xfstests with either gcc 6.4.1 or 7.2.1 I see the following warning: In file included from /usr/include/stdio.h:27:0, from fssum.c:25: /usr/include/features.h:148:3: warning: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" [-Wcpp] # warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" ^~~~~~~ The feature_test_macros(7) man page says this about _BSD_SOURCE: Since glibc 2.20, this macro is deprecated. It now has the same effect as defining _DEFAULT_SOURCE, but generates a compile-time warning (unless _DEFAULT_SOURCE is also defined). Use _DEFAULT_SOURCE instead. To allow code that requires _BSD_SOURCE in glibc 2.19 and earlier and _DEFAULT_SOURCE in glibc 2.20 and later to compile without warnings, define both _BSD_SOURCE and _DEFAULT_SOURCE. Keep backwards compatibility with older code by defining both _BSD_SOURCE and _DEFAULT_SOURCE. Signed-off-by: Ross Zwisler Reviewed-by: Eryu Guan Signed-off-by: Eryu Guan --- diff --git a/src/fssum.c b/src/fssum.c index 04052cdc8..13111d6fe 100644 --- a/src/fssum.c +++ b/src/fssum.c @@ -17,6 +17,7 @@ */ #ifdef __linux__ #define _BSD_SOURCE +#define _DEFAULT_SOURCE #define _LARGEFILE64_SOURCE #ifndef _GNU_SOURCE #define _GNU_SOURCE