suppress not used variables

Core/Src/syscalls.c

@@ -52,6 +52,8 @@ int _getpid(void)
 
 int _kill(int pid, int sig)
 {
+	(void)pid;
+	(void)sig;
 	errno = EINVAL;
 	return -1;
 }
@@ -65,6 +67,7 @@ void _exit (int status)
 __attribute__((weak)) int _read(int file, char *ptr, int len)
 {
 	int DataIdx;
+	(void)file;
 
 	for (DataIdx = 0; DataIdx < len; DataIdx++)
 	{
@@ -77,6 +80,7 @@ return len;
 __attribute__((weak)) int _write(int file, char *ptr, int len)
 {
 	int DataIdx;
+	(void)file;
 
 	for (DataIdx = 0; DataIdx < len; DataIdx++)
 	{
@@ -87,57 +91,71 @@ __attribute__((weak)) int _write(int file, char *ptr, int len)
 
 int _close(int file)
 {
+	(void)file;
 	return -1;
 }
 
 
 int _fstat(int file, struct stat *st)
 {
+	(void)file;
 	st->st_mode = S_IFCHR;
 	return 0;
 }
 
 int _isatty(int file)
 {
+	(void)file;
 	return 1;
 }
 
 int _lseek(int file, int ptr, int dir)
 {
+	(void)file;
+	(void)ptr;
+	(void)dir;
 	return 0;
 }
 
 int _open(char *path, int flags, ...)
 {
+	(void)path;
+	(void)flags;
 	/* Pretend like we always fail */
 	return -1;
 }
 
 int _wait(int *status)
 {
+	(void)status;
 	errno = ECHILD;
 	return -1;
 }
 
 int _unlink(char *name)
 {
+	(void)name;
 	errno = ENOENT;
 	return -1;
 }
 
 int _times(struct tms *buf)
 {
+	(void)buf;
 	return -1;
 }
 
 int _stat(char *file, struct stat *st)
 {
+	(void)file;
 	st->st_mode = S_IFCHR;
 	return 0;
 }
 
 int _link(char *old, char *new)
 {
+	(void)old;
+	(void)new;
 	errno = EMLINK;
 	return -1;
 }
@@ -150,6 +168,9 @@ int _fork(void)
 
 int _execve(char *name, char **argv, char **env)
 {
+	(void)name;
+	(void)argv;
+	(void)env;
 	errno = ENOMEM;
 	return -1;
 }

Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_exti.c

@@ -537,6 +537,7 @@ uint32_t HAL_EXTI_GetPending(EXTI_HandleTypeDef *hexti, uint32_t Edge)
   uint32_t linepos;
   uint32_t maskline;
   uint32_t offset;
+  (void)Edge;
 
   /* Check parameters */
   assert_param(IS_EXTI_LINE(hexti->Line));
@@ -571,6 +572,7 @@ void HAL_EXTI_ClearPending(EXTI_HandleTypeDef *hexti, uint32_t Edge)
   __IO uint32_t *regaddr;
   uint32_t maskline;
   uint32_t offset;
+  (void)Edge;
 
   /* Check parameters */
   assert_param(IS_EXTI_LINE(hexti->Line));