Take _GNU_SOURCE out of source and put it in CFLAGS

src/control.c

@@ -227,7 +227,6 @@ int control_mirror(struct control_params* client, int linesc, char** lines)
 	
 	
 	remote_size = socket_nbd_read_hello(fd);
-	remote_size = remote_size; // shush compiler
 	
 	mirror = xmalloc(sizeof(struct mirror_status));
 	mirror->client = fd;

src/ioutil.c

@@ -1,6 +1,3 @@
-#define _LARGEFILE64_SOURCE
-#define _GNU_SOURCE
-
 #include <sys/mman.h>
 #include <sys/sendfile.h>
 #include <sys/ioctl.h>

src/nbdtypes.h

@@ -10,10 +10,7 @@
 #define REQUEST_READ 0 
 #define REQUEST_WRITE 1 
 #define REQUEST_DISCONNECT 2 
-
-#ifndef _LARGEFILE64_SOURCE
-# define _LARGEFILE64_SOURCE
-#endif
+#define REQUEST_ENTRUST (1<<16)
 
 #include <linux/types.h>
 #include <inttypes.h>

src/serve.h

@@ -1,10 +1,6 @@
 #ifndef SERVE_H
 #define SERVE_H
 
-#define _GNU_SOURCE
-
-#define _LARGEFILE64_SOURCE
-
 #include <sys/types.h>
 #include <unistd.h>