From 73f8cbc0a6569b4f86b123a76cc68149234925fe Mon Sep 17 00:00:00 2001
From: Tony Wu <tonywu@realtek.com>
Date: Thu, 25 Aug 2016 15:42:46 +0800
Subject: [PATCH] Fix implicit declaration of function 'atexit'

Silence the following compiler warning:
[Warning] RTX_CM_lib.h@807,5: implicit declaration of function 'atexit' [-Wimplicit-function-declaration]

Signed-off-by: Tony Wu <tonywu@realtek.com>
---
 rtos/rtx/TARGET_ARM7/RTX_CM_lib.h     | 1 +
 rtos/rtx/TARGET_CORTEX_A/RTX_CM_lib.h | 1 +
 rtos/rtx/TARGET_CORTEX_M/RTX_CM_lib.h | 1 +
 3 files changed, 3 insertions(+)

diff --git a/rtos/rtx/TARGET_ARM7/RTX_CM_lib.h b/rtos/rtx/TARGET_ARM7/RTX_CM_lib.h
index 2d4ac28bc7..10ba168055 100755
--- a/rtos/rtx/TARGET_ARM7/RTX_CM_lib.h
+++ b/rtos/rtx/TARGET_ARM7/RTX_CM_lib.h
@@ -329,6 +329,7 @@ __asm void __rt_entry (void) {
 
 #elif defined (__GNUC__)
 
+extern int atexit(void (*func)(void));
 extern void __libc_fini_array(void);
 extern void __libc_init_array (void);
 extern int main(int argc, char **argv);
diff --git a/rtos/rtx/TARGET_CORTEX_A/RTX_CM_lib.h b/rtos/rtx/TARGET_CORTEX_A/RTX_CM_lib.h
index 5aef981767..752e822609 100644
--- a/rtos/rtx/TARGET_CORTEX_A/RTX_CM_lib.h
+++ b/rtos/rtx/TARGET_CORTEX_A/RTX_CM_lib.h
@@ -485,6 +485,7 @@ __asm void __rt_entry (void) {
 #endif
 
 #elif defined (__GNUC__)
+extern int atexit(void (*func)(void));
 extern void __libc_fini_array(void);
 extern void __libc_init_array (void);
 extern int main(int argc, char **argv);
diff --git a/rtos/rtx/TARGET_CORTEX_M/RTX_CM_lib.h b/rtos/rtx/TARGET_CORTEX_M/RTX_CM_lib.h
index 4c67a307ea..72f695c682 100644
--- a/rtos/rtx/TARGET_CORTEX_M/RTX_CM_lib.h
+++ b/rtos/rtx/TARGET_CORTEX_M/RTX_CM_lib.h
@@ -790,6 +790,7 @@ static osMutexId malloc_mutex_id;
 osMutexDef(env_mutex);
 static osMutexId env_mutex_id;
 
+extern int atexit(void (*func)(void));
 extern void __libc_fini_array(void);
 extern void __libc_init_array (void);
 extern int main(int argc, char **argv);