build: define _GNU_SOURCE only on the command line

Not in source files

See https://ariadne.space/2021/12/21/stop-defining-feature-test-macros-in-your-code/

Signed-off-by: Steve Bennett <steveb@workware.net.au>

1 files changed, 0 insertions, 3 deletions

diff --git a/jim-aio.c b/jim-aio.c
index cb56826..487f2c3 100644
--- a/jim-aio.c
+++ b/jim-aio.c
@@ -39,9 +39,6 @@
 
 #include "jimautoconf.h"
 
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>