5 步骤二运行 GUI 引擎运行失败

发布于 2021-07-16 20:23:42 浏览：1306 订阅该版

[使用 QEMU 运行 RT-Thread](https://www.bookstack.cn/read/rtthread-application-note/10.md)

按此说明操作  步骤二 运行 GUI 引擎 运行失败
报错

```
 \ | /                                                                                                                                       
- RT -     Thread Operating System                                                                                                           
 / | \     4.0.4 build Jul 16 2021                                                                                                           
 2006 - 2021 Copyright by rt-thread team                                                                                                     
lwIP-2.1.2 initialized!                                                                                                                      
[I/sal.skt] Socket Abstraction Layer initialize success.                                                                                     
[I/SDIO] SD card capacity 65536 KB.                                                                                                          
[I/SDIO] switching card to high speed failed!                                                                                                
hello rt-thread                                                                                                                              
msh />                                                                                                                                       
Terminal106@DESKTOP-BU7PDSR D:\rtthread\rtthread-rt-thread-master\rt-thread\bsp\qemu-vexpress-a9                                             
> scons                                                                                                                                      
scons: Reading SConscript files ...                                                                                                          
scons: done reading SConscript files.                                                                                                        
scons: Building targets ...                                                                                                                  
scons: building associated VariantDir targets: build                                                                                         
CC build\packages\gui_engine-latest\src\blit.o                                                                                               
packages\gui_engine-latest\src\blit.c: In function 'rtgui_blit':                                                                             
packages\gui_engine-latest\src\blit.c:1709:31: error: 'RTGRAPHIC_PIXEL_FORMAT_ALPHA' undeclared (first use in this function)                 
     else if (info->src_fmt == RTGRAPHIC_PIXEL_FORMAT_ALPHA)                                                                                 
                               ^                                                                                                             
packages\gui_engine-latest\src\blit.c:1709:31: note: each undeclared identifier is reported only once for each function it appears in        
packages\gui_engine-latest\src\blit.c:1724:31: error: 'RTGRAPHIC_PIXEL_FORMAT_COLOR' undeclared (first use in this function)                 
     else if (info->src_fmt == RTGRAPHIC_PIXEL_FORMAT_COLOR)                                                                                 
                               ^                                                                                                             
scons: *** [build\packages\gui_engine-latest\src\blit.o] Error 1                                                                             
scons: building terminated because of errors.  
```
请问如何解决