CubeMX生成keil工程，出现多个错误，请问是什么原因

Build started: Project:
*** Using Compiler 'V6.12', folder: 'D:\Keil_v5\ARM\ARMCLANG\Bin'
Build target 'ADC+DAC+SD+SDRAM'
compiling msh.c...
compiling shell.c...
compiling cmd.c...
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(20): error: unknown type name 'SCB_VTOR'
SCB_VTOR        EQU     0xE000ED08               ; Vector Table Offset Register
^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(20): error: expected ';' after top level declarator
SCB_VTOR        EQU     0xE000ED08               ; Vector Table Offset Register
                   ^
                   ;
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(20): error: unknown type name 'Vector'
SCB_VTOR        EQU     0xE000ED08               ; Vector Table Offset Register
                                                   ^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(20): error: expected ';' after top level declarator
SCB_VTOR        EQU     0xE000ED08               ; Vector Table Offset Register
                                                               ^
                                                               ;
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(21): error: unknown type name 'interrupt'
NVIC_INT_CTRL   EQU     0xE000ED04               ; interrupt control state register
                                                   ^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(21): error: expected ';' after top level declarator
NVIC_INT_CTRL   EQU     0xE000ED04               ; interrupt control state register
                                                                    ^
                                                                    ;
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(22): error: unknown type name 'system'
NVIC_SYSPRI2    EQU     0xE000ED20               ; system priority register (2)
                                                   ^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(22): error: expected ';' after top level declarator
NVIC_SYSPRI2    EQU     0xE000ED20               ; system priority register (2)
                                                                  ^
                                                                  ;
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(22): error: expected identifier or '('
NVIC_SYSPRI2    EQU     0xE000ED20               ; system priority register (2)
                                                                             ^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(22): error: expected ')'
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(22): note: to match this '('
NVIC_SYSPRI2    EQU     0xE000ED20               ; system priority register (2)
                                                                            ^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(23): error: unknown type name 'PendSV'
NVIC_PENDSV_PRI EQU     0x00FF0000               ; PendSV priority value (lowest)
                                                   ^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(23): error: expected ';' after top level declarator
NVIC_PENDSV_PRI EQU     0x00FF0000               ; PendSV priority value (lowest)
                                                                  ^
                                                                  ;
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(24): error: unknown type name 'value'
NVIC_PENDSVSET  EQU     0x10000000               ; value to trigger PendSV exception
                                                   ^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(24): error: expected ';' after top level declarator
NVIC_PENDSVSET  EQU     0x10000000               ; value to trigger PendSV exception
                                                           ^
                                                           ;
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(38): error: unknown type name 'rt_hw_interrupt_disable'
rt_hw_interrupt_disable    PROC
^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(38): error: expected ';' after top level declarator
rt_hw_interrupt_disable    PROC
                               ^
                               ;
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(48): error: unknown type name 'rt_hw_interrupt_enable'
rt_hw_interrupt_enable    PROC
^
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(48): error: expected ';' after top level declarator
rt_hw_interrupt_enable    PROC
                              ^
                              ;
../Middlewares/Third_Party/RealThread_RTOS_RT-Thread/libcpu/arm/cortex-m7/context_rvds.S(59): error: unknown type name 'rt_hw_context_switch_interrupt'
rt_hw_context_switch_interrupt
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
compiling context_rvds.S...
"ADC+DAC+SD+SDRAM\ADC+DAC+SD+SDRAM.axf" - 19 Error(s), 0 Warning(s).
Target not created.
Build Time Elapsed:  00:00:06