fix(linux): define __assert_func for IDF_TARGET=linux on macOS

components/linux/CMakeLists.txt

@@ -4,7 +4,7 @@ if(NOT "${target}" STREQUAL "linux")
 endif()
 
 if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
-    list(APPEND srcs getrandom.c)
+    list(APPEND srcs getrandom.c assert_func.c)
 endif()
 
 idf_component_register(INCLUDE_DIRS include

components/linux/assert_func.c

@@ -0,0 +1,23 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdio.h>
+#include "hal/assert.h"
+
+// Implementation of __assert_func for macOS.
+void __assert_func(const char *file, int line, const char *func, const char *expr)
+{
+    fprintf(stderr, "assert failed at %s:%d (%s): %s\n", file, line, func, expr);
+    abort();
+}
+
+// Defining this symbol as well, since `hal` component will add "-U __assert_func" linker option,
+// and symbols are prefixed with an additional underscore on macOS.
+// (Can't use __attribute__((alias)) because aliases are not supported on macOS.)
+void _assert_func(const char *file, int line, const char *func, const char *expr)
+{
+    __assert_func(file, line, func, expr);
+}