Fixed issue of redefinition warning messages for _GNU_SOURCE
Signed-off-by: nilesh.kale <nilesh.kale@espressif.com>
diff --git a/ChangeLog.d/fix-redefination_warning_messages_for_GNU_SOURCE.txt b/ChangeLog.d/fix-redefination_warning_messages_for_GNU_SOURCE.txt
new file mode 100644
index 0000000..ce2e9d5
--- /dev/null
+++ b/ChangeLog.d/fix-redefination_warning_messages_for_GNU_SOURCE.txt
@@ -0,0 +1,5 @@
+Bugfix
+ * Fix issue of redefinition warning messages for _GNU_SOURCE in
+ entropy_poll.c and sha_256.c. There was a build warning during
+ building for linux platform.
+ Resolves #9026
\ No newline at end of file
diff --git a/library/entropy_poll.c b/library/entropy_poll.c
index 794ee03..611768c 100644
--- a/library/entropy_poll.c
+++ b/library/entropy_poll.c
@@ -5,10 +5,12 @@
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*/
-#if defined(__linux__) || defined(__midipix__) && !defined(_GNU_SOURCE)
+#if defined(__linux__) || defined(__midipix__)
/* Ensure that syscall() is available even when compiling with -std=c99 */
+#if !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
+#endif
#include "common.h"
diff --git a/library/sha256.c b/library/sha256.c
index 8788981..8b2c345 100644
--- a/library/sha256.c
+++ b/library/sha256.c
@@ -44,7 +44,9 @@
#endif /* defined(__clang__) && (__clang_major__ >= 4) */
/* Ensure that SIG_SETMASK is defined when -std=c99 is used. */
+#if !defined(_GNU_SOURCE)
#define _GNU_SOURCE
+#endif
#include "common.h"