feat(build): update gnu17->gnu23 and gnu++2b->gnu++26

components/newlib/platform_include/stdatomic.h

@@ -0,0 +1,20 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+#include_next <stdatomic.h>
+
+/* The ATOMIC_VAR_INIT macro was deprecated in:
+ *  - C17
+ *  - C++20
+ * and removed in subsequent standards.
+ * Since users may change the standard version for their projects,
+ * IDF should remain compatible across different standards.
+ */
+#if __STDC_VERSION__ > 201710L || __cplusplus > 202002L
+# ifndef ATOMIC_VAR_INIT
+#   define ATOMIC_VAR_INIT(val) (val)
+# endif
+#endif