diff --git a/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c b/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c
index dd7ab849..8d3ef522 100644
--- a/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c
+++ b/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c
@@ -312,13 +312,6 @@ static HAL_StatusTypeDef I2C_Master_SB(I2C_HandleTypeDef *hi2c);
 static HAL_StatusTypeDef I2C_Master_ADD10(I2C_HandleTypeDef *hi2c);
 static HAL_StatusTypeDef I2C_Master_ADDR(I2C_HandleTypeDef *hi2c);
 
-static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c);
-static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c);
-static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c);
-static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c);
-static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c);
-static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c);
-static HAL_StatusTypeDef I2C_Slave_AF(I2C_HandleTypeDef *hi2c);
 /**
  * @}
  */
@@ -3206,7 +3199,6 @@ void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c) {
     tmp4 = hi2c->PreviousState;
     if ((tmp1 == HAL_I2C_MODE_SLAVE) && (tmp2 == 0U)
         && ((tmp3 == HAL_I2C_STATE_BUSY_TX) || (tmp3 == HAL_I2C_STATE_BUSY_TX_LISTEN) || ((tmp3 == HAL_I2C_STATE_LISTEN) && (tmp4 == I2C_STATE_SLAVE_BUSY_TX)))) {
-      I2C_Slave_AF(hi2c);
     } else {
       hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
 
@@ -3870,249 +3862,6 @@ static HAL_StatusTypeDef I2C_Master_ADDR(I2C_HandleTypeDef *hi2c) {
   return HAL_OK;
 }
 
-/**
- * @brief  Handle TXE flag for Slave
- * @param  hi2c Pointer to a I2C_HandleTypeDef structure that contains
- *         the configuration information for I2C module
- * @retval HAL status
- */
-static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c) {
-  /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
-  uint32_t CurrentState = hi2c->State;
-
-  if (hi2c->XferCount != 0U) {
-    /* Write data to DR */
-    hi2c->Instance->DR = (*hi2c->pBuffPtr++);
-    hi2c->XferCount--;
-
-    if ((hi2c->XferCount == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN)) {
-      /* Last Byte is received, disable Interrupt */
-      __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
-
-      /* Set state at HAL_I2C_STATE_LISTEN */
-      hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX;
-      hi2c->State         = HAL_I2C_STATE_LISTEN;
-
-      /* Call the Tx complete callback to inform upper layer of the end of receive process */
-      HAL_I2C_SlaveTxCpltCallback(hi2c);
-    }
-  }
-  return HAL_OK;
-}
-
-/**
- * @brief  Handle BTF flag for Slave transmitter
- * @param  hi2c Pointer to a I2C_HandleTypeDef structure that contains
- *         the configuration information for I2C module
- * @retval HAL status
- */
-static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c) {
-  if (hi2c->XferCount != 0U) {
-    /* Write data to DR */
-    hi2c->Instance->DR = (*hi2c->pBuffPtr++);
-    hi2c->XferCount--;
-  }
-  return HAL_OK;
-}
-
-/**
- * @brief  Handle RXNE flag for Slave
- * @param  hi2c Pointer to a I2C_HandleTypeDef structure that contains
- *         the configuration information for I2C module
- * @retval HAL status
- */
-static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c) {
-  /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
-  uint32_t CurrentState = hi2c->State;
-
-  if (hi2c->XferCount != 0U) {
-    /* Read data from DR */
-    (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
-    hi2c->XferCount--;
-
-    if ((hi2c->XferCount == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN)) {
-      /* Last Byte is received, disable Interrupt */
-      __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
-
-      /* Set state at HAL_I2C_STATE_LISTEN */
-      hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_RX;
-      hi2c->State         = HAL_I2C_STATE_LISTEN;
-
-      /* Call the Rx complete callback to inform upper layer of the end of receive process */
-      HAL_I2C_SlaveRxCpltCallback(hi2c);
-    }
-  }
-  return HAL_OK;
-}
-
-/**
- * @brief  Handle BTF flag for Slave receiver
- * @param  hi2c Pointer to a I2C_HandleTypeDef structure that contains
- *         the configuration information for I2C module
- * @retval HAL status
- */
-static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c) {
-  if (hi2c->XferCount != 0U) {
-    /* Read data from DR */
-    (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
-    hi2c->XferCount--;
-  }
-  return HAL_OK;
-}
-
-/**
- * @brief  Handle ADD flag for Slave
- * @param  hi2c Pointer to a I2C_HandleTypeDef structure that contains
- *         the configuration information for I2C module
- * @retval HAL status
- */
-static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c) {
-  uint8_t  TransferDirection = I2C_DIRECTION_RECEIVE;
-  uint16_t SlaveAddrCode     = 0U;
-
-  /* Transfer Direction requested by Master */
-  if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TRA) == RESET) {
-    TransferDirection = I2C_DIRECTION_TRANSMIT;
-  }
-
-  if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_DUALF) == RESET) {
-    SlaveAddrCode = hi2c->Init.OwnAddress1;
-  } else {
-    SlaveAddrCode = hi2c->Init.OwnAddress2;
-  }
-
-  /* Call Slave Addr callback */
-  HAL_I2C_AddrCallback(hi2c, TransferDirection, SlaveAddrCode);
-
-  return HAL_OK;
-}
-
-/**
- * @brief  Handle STOPF flag for Slave
- * @param  hi2c Pointer to a I2C_HandleTypeDef structure that contains
- *         the configuration information for I2C module
- * @retval HAL status
- */
-static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c) {
-  /* Declaration of temporary variable to prevent undefined behavior of volatile usage */
-  uint32_t CurrentState = hi2c->State;
-
-  /* Disable EVT, BUF and ERR interrupt */
-  __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
-
-  /* Clear STOPF flag */
-  __HAL_I2C_CLEAR_STOPFLAG(hi2c);
-
-  /* Disable Acknowledge */
-  hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
-
-  /* If a DMA is ongoing, Update handle size context */
-  if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) {
-    if ((hi2c->State == HAL_I2C_STATE_BUSY_RX) || (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN)) {
-      hi2c->XferCount = __HAL_DMA_GET_COUNTER(hi2c->hdmarx);
-    } else {
-      hi2c->XferCount = __HAL_DMA_GET_COUNTER(hi2c->hdmatx);
-    }
-  }
-
-  /* All data are not transferred, so set error code accordingly */
-  if (hi2c->XferCount != 0U) {
-    /* Store Last receive data if any */
-    if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) {
-      /* Read data from DR */
-      (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
-      hi2c->XferCount--;
-    }
-
-    /* Store Last receive data if any */
-    if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) {
-      /* Read data from DR */
-      (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
-      hi2c->XferCount--;
-    }
-
-    /* Set ErrorCode corresponding to a Non-Acknowledge */
-    hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
-  }
-
-  if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE) {
-    /* Call the corresponding callback to inform upper layer of End of Transfer */
-    I2C_ITError(hi2c);
-  } else {
-    if ((CurrentState == HAL_I2C_STATE_LISTEN) || (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN) || (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN)) {
-      hi2c->XferOptions   = I2C_NO_OPTION_FRAME;
-      hi2c->PreviousState = I2C_STATE_NONE;
-      hi2c->State         = HAL_I2C_STATE_READY;
-      hi2c->Mode          = HAL_I2C_MODE_NONE;
-
-      /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */
-      HAL_I2C_ListenCpltCallback(hi2c);
-    } else {
-      if ((hi2c->PreviousState == I2C_STATE_SLAVE_BUSY_RX) || (CurrentState == HAL_I2C_STATE_BUSY_RX)) {
-        hi2c->PreviousState = I2C_STATE_NONE;
-        hi2c->State         = HAL_I2C_STATE_READY;
-        hi2c->Mode          = HAL_I2C_MODE_NONE;
-
-        HAL_I2C_SlaveRxCpltCallback(hi2c);
-      }
-    }
-  }
-  return HAL_OK;
-}
-
-/**
- * @param  hi2c Pointer to a I2C_HandleTypeDef structure that contains
- *         the configuration information for I2C module
- * @retval HAL status
- */
-static HAL_StatusTypeDef I2C_Slave_AF(I2C_HandleTypeDef *hi2c) {
-  /* Declaration of temporary variables to prevent undefined behavior of volatile usage */
-  uint32_t CurrentState       = hi2c->State;
-  uint32_t CurrentXferOptions = hi2c->XferOptions;
-
-  if (((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME)) && (CurrentState == HAL_I2C_STATE_LISTEN)) {
-    hi2c->XferOptions = I2C_NO_OPTION_FRAME;
-
-    /* Disable EVT, BUF and ERR interrupt */
-    __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
-
-    /* Clear AF flag */
-    __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
-
-    /* Disable Acknowledge */
-    hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
-
-    hi2c->PreviousState = I2C_STATE_NONE;
-    hi2c->State         = HAL_I2C_STATE_READY;
-    hi2c->Mode          = HAL_I2C_MODE_NONE;
-
-    /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */
-    HAL_I2C_ListenCpltCallback(hi2c);
-  } else if (CurrentState == HAL_I2C_STATE_BUSY_TX) {
-    hi2c->XferOptions   = I2C_NO_OPTION_FRAME;
-    hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX;
-    hi2c->State         = HAL_I2C_STATE_READY;
-    hi2c->Mode          = HAL_I2C_MODE_NONE;
-
-    /* Disable EVT, BUF and ERR interrupt */
-    __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
-
-    /* Clear AF flag */
-    __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
-
-    /* Disable Acknowledge */
-    hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
-
-    HAL_I2C_SlaveTxCpltCallback(hi2c);
-  } else {
-    /* Clear AF flag only */
-    /* State Listen, but XferOptions == FIRST or NEXT */
-    __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
-  }
-
-  return HAL_OK;
-}
-
 /**
  * @brief  I2C interrupts error process
  * @param  hi2c I2C handle.
diff --git a/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c b/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c
index 02f2e074..e56f9cbd 100644
--- a/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c
+++ b/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c
@@ -119,7 +119,6 @@
  */
 
 /* Private function prototypes -----------------------------------------------*/
-static void RCC_Delay(uint32_t mdelay);
 
 /* Exported functions --------------------------------------------------------*/
 
@@ -1070,18 +1069,6 @@ void HAL_RCC_NMI_IRQHandler(void) {
   }
 }
 
-/**
- * @brief  This function provides delay (in milliseconds) based on CPU cycles method.
- * @param  mdelay: specifies the delay time length, in milliseconds.
- * @retval None
- */
-static void RCC_Delay(uint32_t mdelay) {
-  __IO uint32_t Delay = mdelay * (SystemCoreClock / 8U / 1000U);
-  do {
-    __NOP();
-  } while (Delay--);
-}
-
 /**
  * @brief  RCC Clock Security System interrupt callback
  * @retval none
diff --git a/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c b/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c
index 9ab04fe8..010f50dd 100644
--- a/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c
+++ b/source/Core/BSP/Miniware/Vendor/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c
@@ -154,7 +154,6 @@ static void TIM_TI2_ConfigInputStage(TIM_TypeDef *TIMx, uint32_t TIM_ICPolarity,
 static void TIM_TI3_SetConfig(TIM_TypeDef *TIMx, uint32_t TIM_ICPolarity, uint32_t TIM_ICSelection, uint32_t TIM_ICFilter);
 static void TIM_TI4_SetConfig(TIM_TypeDef *TIMx, uint32_t TIM_ICPolarity, uint32_t TIM_ICSelection, uint32_t TIM_ICFilter);
 static void TIM_ETR_SetConfig(TIM_TypeDef *TIMx, uint32_t TIM_ExtTRGPrescaler, uint32_t TIM_ExtTRGPolarity, uint32_t ExtTRGFilter);
-static void TIM_ITRx_SetConfig(TIM_TypeDef *TIMx, uint16_t InputTriggerSource);
 static void TIM_DMAPeriodElapsedCplt(DMA_HandleTypeDef *hdma);
 static void TIM_DMATriggerCplt(DMA_HandleTypeDef *hdma);
 static void TIM_SlaveTimer_SetConfig(TIM_HandleTypeDef *htim, TIM_SlaveConfigTypeDef *sSlaveConfig);
@@ -4748,33 +4747,6 @@ static void TIM_TI4_SetConfig(TIM_TypeDef *TIMx, uint32_t TIM_ICPolarity, uint32
   TIMx->CCER  = tmpccer;
 }
 
-/**
- * @brief  Selects the Input Trigger source
- * @param  TIMx  to select the TIM peripheral
- * @param  InputTriggerSource : The Input Trigger source.
- *          This parameter can be one of the following values:
- *            @arg TIM_TS_ITR0 : Internal Trigger 0
- *            @arg TIM_TS_ITR1 : Internal Trigger 1
- *            @arg TIM_TS_ITR2 : Internal Trigger 2
- *            @arg TIM_TS_ITR3 : Internal Trigger 3
- *            @arg TIM_TS_TI1F_ED : TI1 Edge Detector
- *            @arg TIM_TS_TI1FP1 : Filtered Timer Input 1
- *            @arg TIM_TS_TI2FP2 : Filtered Timer Input 2
- *            @arg TIM_TS_ETRF : External Trigger input
- * @retval None
- */
-static void TIM_ITRx_SetConfig(TIM_TypeDef *TIMx, uint16_t InputTriggerSource) {
-  uint32_t tmpsmcr = 0U;
-
-  /* Get the TIMx SMCR register value */
-  tmpsmcr = TIMx->SMCR;
-  /* Reset the TS Bits */
-  tmpsmcr &= ~TIM_SMCR_TS;
-  /* Set the Input Trigger source and the slave mode*/
-  tmpsmcr |= InputTriggerSource | TIM_SLAVEMODE_EXTERNAL1;
-  /* Write to TIMx SMCR */
-  TIMx->SMCR = tmpsmcr;
-}
 /**
  * @brief  Configures the TIMx External Trigger (ETR).
  * @param  TIMx  to select the TIM peripheral
diff --git a/source/Core/BSP/Pine64/FreeRTOSConfig.h b/source/Core/BSP/Pine64/FreeRTOSConfig.h
index 9a9af7e2..79fed319 100644
--- a/source/Core/BSP/Pine64/FreeRTOSConfig.h
+++ b/source/Core/BSP/Pine64/FreeRTOSConfig.h
@@ -45,8 +45,8 @@
 
 /* Run time and task stats gathering related definitions. */
 #define configGENERATE_RUN_TIME_STATS        0
-#define configUSE_TRACE_FACILITY             1
-#define configUSE_STATS_FORMATTING_FUNCTIONS 1
+#define configUSE_TRACE_FACILITY             0
+#define configUSE_STATS_FORMATTING_FUNCTIONS 0
 
 /* Co-routine related definitions. */
 #define configUSE_CO_ROUTINES           0
diff --git a/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/Usb/drv_usbd_int.c b/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/Usb/drv_usbd_int.c
index 8db0643f..4a7d0e9c 100644
--- a/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/Usb/drv_usbd_int.c
+++ b/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/Usb/drv_usbd_int.c
@@ -261,7 +261,7 @@ static uint32_t usbd_int_epout(usb_core_driver *udev) {
         if (USB_USE_DMA == udev->bp.transfer_mode) {
           __IO uint32_t eplen = udev->regs.er_out[ep_num]->DOEPLEN;
 
-          udev->dev.transc_out[ep_num].xfer_count = udev->dev.transc_out[ep_num].max_len - eplen & DEPLEN_TLEN;
+          udev->dev.transc_out[ep_num].xfer_count = udev->dev.transc_out[ep_num].max_len - (eplen & DEPLEN_TLEN);
         }
 
         /* inform upper layer: data ready */
diff --git a/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/Usb/drv_usbh_int.c b/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/Usb/drv_usbh_int.c
index 15a2e482..abbec3cd 100644
--- a/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/Usb/drv_usbh_int.c
+++ b/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/Usb/drv_usbh_int.c
@@ -376,7 +376,7 @@ uint32_t usbh_int_pipe_in(usb_core_driver *pudev, uint32_t pp_num) {
     usb_pp_halt(pudev, pp_num, HCHINTF_REQOVR, PIPE_REQOVR);
   } else if (intr_pp & HCHINTF_TF) {
     if (USB_USE_DMA == pudev->bp.transfer_mode) {
-      pudev->host.backup_xfercount[pp_num] = pp->xfer_len - pp_reg->HCHLEN & HCHLEN_TLEN;
+      pudev->host.backup_xfercount[pp_num] = pp->xfer_len - (pp_reg->HCHLEN & HCHLEN_TLEN);
     }
 
     pp->pp_status = PIPE_XF;
diff --git a/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/gd32vf103_i2c.c b/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/gd32vf103_i2c.c
index 217be949..1062f29e 100644
--- a/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/gd32vf103_i2c.c
+++ b/source/Core/BSP/Pine64/Vendor/SoC/gd32vf103/Common/Source/Drivers/gd32vf103_i2c.c
@@ -567,6 +567,7 @@ void i2c_flag_clear(uint32_t i2c_periph, i2c_flag_enum flag) {
     /* read I2C_STAT0 and then read I2C_STAT1 to clear ADDSEND */
     temp = I2C_STAT0(i2c_periph);
     temp = I2C_STAT1(i2c_periph);
+    (void)temp;
   } else {
     I2C_REG_VAL(i2c_periph, flag) &= ~BIT(I2C_BIT_POS(flag));
   }
@@ -667,6 +668,7 @@ void i2c_interrupt_flag_clear(uint32_t i2c_periph, i2c_interrupt_flag_enum int_f
     /* read I2C_STAT0 and then read I2C_STAT1 to clear ADDSEND */
     temp = I2C_STAT0(i2c_periph);
     temp = I2C_STAT1(i2c_periph);
+    (void)temp;
   } else {
     I2C_REG_VAL2(i2c_periph, int_flag) &= ~BIT(I2C_BIT_POS2(int_flag));
   }
diff --git a/source/Makefile b/source/Makefile
index e3df0e5e..952eff60 100644
--- a/source/Makefile
+++ b/source/Makefile
@@ -216,7 +216,7 @@ CHECKOPTIONS=		-Wall 				\
 			
 
 
-CHECKOPTIONS_C=		-Wbad-function-cast
+CHECKOPTIONS_C=		-Wbad-function-cast -Wall -Wshadow -Werror
 
 
 CXXFLAGS=$(DEV_CXXFLAGS)         \