5 makefile:50:rtthread.elf

发布于 2021-02-23 00:04:08 浏览：1243 订阅该版

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chenyaxing 2021-02-23

泥上偶然留指爪，鸿飞那复计东西。

使能libc

莜莜小妹妹De帅老爸 2021-02-23

这家伙很懒，什么也没写！

谢谢您的回答，我的项目没有RT-Thread Settings这个设定项，因为我是裸机程序，没有用到RTT，所以不知道如何使能libc

chenyaxing 2021-02-24

泥上偶然留指爪，鸿飞那复计东西。

那可能需要你来实现 c 库的一些接口比如 lseek，在studio 创建的裸机中是通过一个文件syscalls.c 做了一些简单的接口，可以参考

/*
 * Copyright (c) 2006-2020, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2020-10-19     RT-Thread    first version
 */
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdarg.h>
#undef errno
extern int errno;
extern int _end;
extern void print_char(char);
caddr_t _sbrk(int incr)
{
    static unsigned char *heap = NULL;
    unsigned char *prev_heap;
    if (heap == NULL)
    {
        heap = (unsigned char *) &_end;
    }
    prev_heap = heap;
    heap += incr;
    return (caddr_t) prev_heap;
}
int link(char *old, char *new)
{
    return -1;
}
int _close(int file)
{
    return -1;
}
int _fstat(int file, struct stat *st)
{
    st->st_mode = S_IFCHR;
    return 0;
}
int _isatty(int file)
{
    return 1;
}
int _lseek(int file, int ptr, int dir)
{
    return 0;
}
int _read(int file, char *ptr, int len)
{
    return 0;
}
void abort(void)
{
    /* Abort called */
    while (1)
        ;
}
int _write(int fd, char *pBuffer, int size)
{
    for (int i = 0; i < size; i++)
    {
        if (pBuffer[i] == '\n')
        {
            print_char('\r');
        }
        print_char(pBuffer[i]);
    }
    return size;
}

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3 个回答

莜莜小妹妹De帅老爸 2021-02-23

这家伙很懒，什么也没写！

完整的问题提示如下：

23:51:30 **** 构建 of configuration Debug for project 2_UART2 ****
make -j8 all 
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/Legacy/stm32f1xx_hal_can.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_adc.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_adc_ex.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_can.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cec.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_crc.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dac.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dac_ex.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_eth.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_hcd.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2s.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_irda.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_mmc.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_nand.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_nor.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pccard.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rtc.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rtc_ex.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_sd.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_smartcard.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_sram.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_usart.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_wwdg.c"
arm-none-eabi-gcc "../libraries/STM32F1xx_HAL_Driver/Src/stm32f1xx_ll_usb.c"
arm-none-eabi-gcc "../libraries/CMSIS/Device/ST/STM32F1xx/Source/Templates/gcc/startup_stm32f103xe.S"
arm-none-eabi-gcc "../libraries/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.c"
arm-none-eabi-gcc "../drivers/led.c"
arm-none-eabi-gcc "../drivers/stm32f1xx_it.c"
arm-none-eabi-gcc "../drivers/sysclk.c"
arm-none-eabi-gcc "../drivers/uart.c"
arm-none-eabi-gcc "../applications/main.c"
linking...
d:/rt-threadstudio/repo/extract/toolchain_support_packages/arm/gnu_tools_for_arm_embedded_processors/5.4.1/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk'
d:/rt-threadstudio/repo/extract/toolchain_support_packages/arm/gnu_tools_for_arm_embedded_processors/5.4.1/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-writer.o): In function `_write_r':
writer.c:(.text._write_r+0x12): undefined reference to `_write'
d:/rt-threadstudio/repo/extract/toolchain_support_packages/arm/gnu_tools_for_arm_embedded_processors/5.4.1/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-closer.o): In function `_close_r':
closer.c:(.text._close_r+0xc): undefined reference to `_close'
d:/rt-threadstudio/repo/extract/toolchain_support_packages/arm/gnu_tools_for_arm_embedded_processors/5.4.1/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-fstatr.o): In function `_fstat_r':
fstatr.c:(.text._fstat_r+0x10): undefined reference to `_fstat'
d:/rt-threadstudio/repo/extract/toolchain_support_packages/arm/gnu_tools_for_arm_embedded_processors/5.4.1/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-isattyr.o): In function `_isatty_r':
isattyr.c:(.text._isatty_r+0xc): undefined reference to `_isatty'
d:/rt-threadstudio/repo/extract/toolchain_support_packages/arm/gnu_tools_for_arm_embedded_processors/5.4.1/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-lseekr.o): In function `_lseek_r':
lseekr.c:(.text._lseek_r+0x12): undefined reference to `_lseek'
d:/rt-threadstudio/repo/extract/toolchain_support_packages/arm/gnu_tools_for_arm_embedded_processors/5.4.1/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-readr.o): In function `_read_r':
readr.c:(.text._read_r+0x12): undefined reference to `_read'
collect2.exe: error: ld returned 1 exit status
make: *** [makefile:50: rtthread.elf] Error 1
"make -j8 all" terminated with exit code 2. Build might be incomplete.
23:51:33 Build Failed. 1 errors, 0 warnings. (took 3s.15ms)