使用AT组件，链接过程产生错误. _sbrk_r未定义

发布于 2019-11-18 21:43:53 浏览：1992 订阅该版

* 本帖最后由 eric007 于 2019-11-18 21:43 编辑 *

开启AT组件前，使用都是正常的。配置使用AT网络组件后，编译就不通过了。编译日志如下：

```
eric@eric-PC:~/Desktop/stm32f103-atk-warshipv3$ scons

CC libraries/STM32F1xx_HAL/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_usart.o
LINK rt-thread.elf
/home/eric/Downloads/rtt_building-master/arm-2012.09/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/lib/thumb2/libc.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text+0x12): undefined reference to `_sbrk'
collect2: error: ld returned 1 exit status
scons: *** [rt-thread.elf] Error 1
scons: building terminated because of errors.
```

RT-Thread 版本：V4.0.2
硬件平台：STM32F103ZE

操作系统：deepin 15.11
编译器版本：gcc version 4.7.2 (Sourcery CodeBench Lite 2012.09-63)

在Windows 10环境中同样如此，日志如下：
```
LINK rt-thread.elf
d:/env/tools/gnu_gcc/arm_gcc/mingw/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libc.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk'
collect2.exe: error: ld returned 1 exit status
scons: *** [rt-thread.elf] Error 1
scons: building terminated because of errors.
```

请问你们是否也遇到过这种情况，该问题应该如何解决？
非常感谢你们的建议和意见！