[PATCH [mtd-utils] 1/3] move _GNU_SOURCE to the main makefile

[Mike Frysinger]

A bunch of utils are relying on _GNU_SOURCE already.  The new prompt code
uses getline() which is now part of POSIX, but in older versions of glibc,
it was behind _GNU_SOURCE as it was a GNU extension.

This change doesn't actually tie us to glibc.  Only code that uses GNU
extensions does that.  It just kills warning when using older versions of
glibc.

Signed-off-by: Mike Frysinger <vapier at gentoo.org>
---
 Makefile                | 2 +-
 include/xalloc.h        | 2 +-
 mkfs.jffs2.c            | 1 -
 mkfs.ubifs/mkfs.ubifs.h | 2 --
 nanddump.c              | 1 -
 nandtest.c              | 1 -
 nandwrite.c             | 1 -
 7 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/Makefile b/Makefile
index c8d25f2..bf57a13 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@
 
 VERSION = 1.5.0
 
-CPPFLAGS += -I./include -I$(BUILDDIR)/include -I./ubi-utils/include $(ZLIBCPPFLAGS) $(LZOCPPFLAGS)
+CPPFLAGS += -D_GNU_SOURCE -I./include -I$(BUILDDIR)/include -I./ubi-utils/include $(ZLIBCPPFLAGS) $(LZOCPPFLAGS)
 
 ifeq ($(WITHOUT_XATTR), 1)
   CPPFLAGS += -DWITHOUT_XATTR
diff --git a/include/xalloc.h b/include/xalloc.h
index f1cc8d4..532b80f 100644
--- a/include/xalloc.h
+++ b/include/xalloc.h
@@ -27,6 +27,7 @@
 #ifndef __MTD_UTILS_XALLOC_H__
 #define __MTD_UTILS_XALLOC_H__
 
+#include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -84,7 +85,6 @@ static char *xstrdup(const char *s)
 }
 
 #ifdef _GNU_SOURCE
-#include <stdarg.h>
 
 __attribute__((unused))
 static int xasprintf(char **strp, const char *fmt, ...)
diff --git a/mkfs.jffs2.c b/mkfs.jffs2.c
index 7ade078..c1b0f0d 100644
--- a/mkfs.jffs2.c
+++ b/mkfs.jffs2.c
@@ -49,7 +49,6 @@
 
 #define PROGRAM_NAME "mkfs.jffs2"
 
-#define _GNU_SOURCE
 #include <sys/types.h>
 #include <stdio.h>
 #include <sys/stat.h>
diff --git a/mkfs.ubifs/mkfs.ubifs.h b/mkfs.ubifs/mkfs.ubifs.h
index 01161ef..6030c48 100644
--- a/mkfs.ubifs/mkfs.ubifs.h
+++ b/mkfs.ubifs/mkfs.ubifs.h
@@ -23,8 +23,6 @@
 #ifndef __MKFS_UBIFS_H__
 #define __MKFS_UBIFS_H__
 
-#define _GNU_SOURCE
-#define _LARGEFILE64_SOURCE
 #include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
diff --git a/nanddump.c b/nanddump.c
index be458c6..85ccd5d 100644
--- a/nanddump.c
+++ b/nanddump.c
@@ -15,7 +15,6 @@
 
 #define PROGRAM_NAME "nanddump"
 
-#define _GNU_SOURCE
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
diff --git a/nandtest.c b/nandtest.c
index 0187b87..3437b57 100644
--- a/nandtest.c
+++ b/nandtest.c
@@ -1,6 +1,5 @@
 #define PROGRAM_NAME "nandtest"
 
-#define _GNU_SOURCE
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
diff --git a/nandwrite.c b/nandwrite.c
index de8e7d2..a6b6581 100644
--- a/nandwrite.c
+++ b/nandwrite.c
@@ -21,7 +21,6 @@
 
 #define PROGRAM_NAME "nandwrite"
 
-#define _GNU_SOURCE
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
-- 
1.8.2.1