From f7eed30132ec33352ebbb50f85f9300266b76ce9 Mon Sep 17 00:00:00 2001
From: osy <50960678+osy@users.noreply.github.com>
Date: Sat, 2 Jan 2021 18:32:54 -0800
Subject: [PATCH] build: guard _GNU_SOURCE define if build system defines it

---
 arch/aarch64/makecontext.c | 2 ++
 arch/arm/makecontext.c     | 2 ++
 arch/m68k/makecontext.c    | 2 ++
 arch/ppc/makecontext.c     | 2 ++
 arch/ppc64/makecontext.c   | 2 ++
 arch/riscv64/makecontext.c | 2 ++
 arch/s390x/makecontext.c   | 2 ++
 arch/sh/makecontext.c      | 2 ++
 arch/x86/makecontext.c     | 2 ++
 arch/x86_64/makecontext.c  | 2 ++
 10 files changed, 20 insertions(+)

diff --git a/arch/aarch64/makecontext.c b/arch/aarch64/makecontext.c
index 5afd0ac..e79ac7f 100644
--- a/arch/aarch64/makecontext.c
+++ b/arch/aarch64/makecontext.c
@@ -10,7 +10,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stddef.h>
 #include <stdarg.h>
 #include <string.h>
diff --git a/arch/arm/makecontext.c b/arch/arm/makecontext.c
index 76191fa..fd46df1 100644
--- a/arch/arm/makecontext.c
+++ b/arch/arm/makecontext.c
@@ -10,7 +10,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stddef.h>
 #include <stdarg.h>
 #include <string.h>
diff --git a/arch/m68k/makecontext.c b/arch/m68k/makecontext.c
index f567eb2..fb380f1 100644
--- a/arch/m68k/makecontext.c
+++ b/arch/m68k/makecontext.c
@@ -10,7 +10,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stddef.h>
 #include <stdarg.h>
 #include <string.h>
diff --git a/arch/ppc/makecontext.c b/arch/ppc/makecontext.c
index a91104e..f8ed384 100644
--- a/arch/ppc/makecontext.c
+++ b/arch/ppc/makecontext.c
@@ -11,7 +11,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stdarg.h>
 #include <stdint.h>
 
diff --git a/arch/ppc64/makecontext.c b/arch/ppc64/makecontext.c
index aafccec..e42d66a 100644
--- a/arch/ppc64/makecontext.c
+++ b/arch/ppc64/makecontext.c
@@ -11,7 +11,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stdarg.h>
 #include <stdint.h>
 
diff --git a/arch/riscv64/makecontext.c b/arch/riscv64/makecontext.c
index a456d5c..aee671c 100644
--- a/arch/riscv64/makecontext.c
+++ b/arch/riscv64/makecontext.c
@@ -10,7 +10,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stddef.h>
 #include <stdarg.h>
 #include <string.h>
diff --git a/arch/s390x/makecontext.c b/arch/s390x/makecontext.c
index 6f7cc8e..f970da4 100644
--- a/arch/s390x/makecontext.c
+++ b/arch/s390x/makecontext.c
@@ -10,7 +10,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stddef.h>
 #include <stdarg.h>
 #include <string.h>
diff --git a/arch/sh/makecontext.c b/arch/sh/makecontext.c
index b039dfd..9bc4782 100644
--- a/arch/sh/makecontext.c
+++ b/arch/sh/makecontext.c
@@ -10,7 +10,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stddef.h>
 #include <stdarg.h>
 #include <string.h>
diff --git a/arch/x86/makecontext.c b/arch/x86/makecontext.c
index 571c13b..8d7fbf5 100644
--- a/arch/x86/makecontext.c
+++ b/arch/x86/makecontext.c
@@ -11,7 +11,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stddef.h>
 #include <stdarg.h>
 #include <string.h>
diff --git a/arch/x86_64/makecontext.c b/arch/x86_64/makecontext.c
index 4458507..836ca62 100644
--- a/arch/x86_64/makecontext.c
+++ b/arch/x86_64/makecontext.c
@@ -10,7 +10,9 @@
  * from the use of this software.
  */
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <stddef.h>
 #include <stdarg.h>
 #include <string.h>