From 8a4f246876ebfec5807c69d4c378d0d161a4b029 Mon Sep 17 00:00:00 2001
From: Emanuele Torre <torreemanuele6@gmail.com>
Date: Mon, 24 Jul 2023 15:44:29 +0200
Subject: [PATCH] Remove all #define _GNU_SOURCE in source files

This is unnecessary since we are using AC_USE_SYSTEM_EXTENSIONS in
configure.ac, which makes the compiler always run with -D_GNU_SOURCE=1
when building for GNU/Linux.

Also, the  #define _GNU_SOURCE  in src/util.c, and in
src/inject_errors.c (--enable-inject-errors), were not guarded by a
#ifndef _GNU_SOURCE  so they were just triggering redefinition warnings.
---
 src/builtin.c       | 3 ---
 src/compile.c       | 3 ---
 src/inject_errors.c | 2 --
 src/util.c          | 5 -----
 4 files changed, 13 deletions(-)

diff --git a/src/builtin.c b/src/builtin.c
index fb7513ce..d4869387 100644
--- a/src/builtin.c
+++ b/src/builtin.c
@@ -1,6 +1,3 @@
-#ifndef _GNU_SOURCE
-# define _GNU_SOURCE
-#endif
 #ifndef __sun__
 # define _XOPEN_SOURCE
 # define _XOPEN_SOURCE_EXTENDED 1
diff --git a/src/compile.c b/src/compile.c
index 5645fa5f..4af74ff6 100644
--- a/src/compile.c
+++ b/src/compile.c
@@ -1,6 +1,3 @@
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE // for strdup
-#endif
 #include <assert.h>
 #include <math.h>
 #include <string.h>
diff --git a/src/inject_errors.c b/src/inject_errors.c
index b61a2713..a9fe9a82 100644
--- a/src/inject_errors.c
+++ b/src/inject_errors.c
@@ -1,5 +1,3 @@
-
-#define _GNU_SOURCE /* for RTLD_NEXT */
 #include <assert.h>
 #include <dlfcn.h>
 #include <errno.h>
diff --git a/src/util.c b/src/util.c
index 250bdf75..a5c2b61b 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1,8 +1,3 @@
-
-#ifdef HAVE_MEMMEM
-#define _GNU_SOURCE
-#endif
-
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <assert.h>