RT-Thread Studio sbrk

STUDIO报错 undefined reference to `_sbrk'

发布于 2020-01-08 08:38:57 浏览：1618

新建stm32re项目编译出现如题错误。勾选do not use syscalls 又出现其他错误。。有遇到过类似的吗？没有添加用户程序

```
08:34:09 **** Incremental Build of configuration Debug for project DTU ****
make -j4 all 
Building target: rtthread.elf
Invoking: Cross ARM C Linker
arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb -O0 -ffunction-sections -fdata-sections -Wall  -g -gdwarf-2 -T "D:\RTTProject\DTU\link.lds" -Xlinker --gc-sections -Wl,-Map,"rtthread.map" -Xlinker --cref --specs=nano.specs -o "rtthread.elf"  ./rt-thread/src/clock.o ./rt-thread/src/components.o ./rt-thread/src/device.o ./rt-thread/src/idle.o ./rt-thread/src/ipc.o ./rt-thread/src/irq.o ./rt-thread/src/kservice.o ./rt-thread/src/mem.o ./rt-thread/src/mempool.o ./rt-thread/src/object.o ./rt-thread/src/scheduler.o ./rt-thread/src/signal.o ./rt-thread/src/thread.o ./rt-thread/src/timer.o  ./rt-thread/libcpu/arm/cortex-m3/context_gcc.o ./rt-thread/libcpu/arm/cortex-m3/cpuport.o  ./rt-thread/libcpu/arm/common/backtrace.o ./rt-thread/libcpu/arm/common/div0.o ./rt-thread/libcpu/arm/common/showmem.o  ./rt-thread/components/net/at/src/at_cli.o ./rt-thread/components/net/at/src/at_client.o ./rt-thread/components/net/at/src/at_utils.o  ./rt-thread/components/libc/compilers/minilibc/ctype.o ./rt-thread/components/libc/compilers/minilibc/math.o ./rt-thread/components/libc/compilers/minilibc/qsort.o ./rt-thread/components/libc/compilers/minilibc/rand.o ./rt-thread/components/libc/compilers/minilibc/stdlib.o ./rt-thread/components/libc/compilers/minilibc/string.o ./rt-thread/components/libc/compilers/minilibc/time.o  ./rt-thread/components/finsh/cmd.o ./rt-thread/components/finsh/msh.o ./rt-thread/components/finsh/shell.o  ./rt-thread/components/drivers/src/completion.o ./rt-thread/components/drivers/src/dataqueue.o ./rt-thread/components/drivers/src/pipe.o ./rt-thread/components/drivers/src/ringblk_buf.o ./rt-thread/components/drivers/src/ringbuffer.o ./rt-thread/components/drivers/src/waitqueue.o ./rt-thread/components/drivers/src/workqueue.o  ./rt-thread/components/drivers/spi/spi_core.o ./rt-thread/components/drivers/spi/spi_dev.o  ./rt-thread/components/drivers/serial/serial.o  ./rt-thread/components/drivers/rtc/rtc.o  ./rt-thread/components/drivers/misc/adc.o ./rt-thread/components/drivers/misc/pin.o  ./rt-thread/components/drivers/i2c/i2c-bit-ops.o ./rt-thread/components/drivers/i2c/i2c_core.o ./rt-thread/components/drivers/i2c/i2c_dev.o  ./libraries/STM32F1xx_HAL_Driver/Src/Legacy/stm32f1xx_hal_can.o  ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_adc.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_adc_ex.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_can.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cec.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_crc.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dac.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dac_ex.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_eth.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_hcd.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2s.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_irda.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_mmc.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_nand.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_nor.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pccard.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rtc.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rtc_ex.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_sd.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_smartcard.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_sram.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_usart.o ./libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_wwdg.o  ./libraries/CMSIS/Device/ST/STM32F1xx/Source/Templates/gcc/startup_stm32f103xe.o  ./libraries/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.o  ./drivers/board.o ./drivers/drv_common.o ./drivers/drv_gpio.o ./drivers/drv_usart.o  ./applications/main.o   
c:/rt-threadstudio/platform/env_released/env/tools/gnu_gcc/arm_gcc/mingw/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg_nano.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
make: *** [makefile:64: rtthread.elf] Error 1
"make -j4 all" terminated with exit code 2. Build might be incomplete.

08:34:14 Build Failed. 1 errors, 0 warnings. (took 5s.420ms)
```

![TIM截图20200108083655.png](/uploads/202001/08/083726qz4fmokme5k4mk84.png)