stm32使用GCC时候printf等重定向引起的问题的解决

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keer_zu|  楼主 | 2021-6-24 09:56 | 显示全部楼层 |阅读模式
问题:
/opt/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7e-m/fpu/libc.a(lib_a-writer.o): In function `_write_r':
writer.c:(.text._write_r+0x12): undefined reference to `_write'
/opt/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7e-m/fpu/libc.a(lib_a-closer.o): In function `_close_r':
closer.c:(.text._close_r+0xc): undefined reference to `_close'
/opt/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7e-m/fpu/libc.a(lib_a-lseekr.o): In function `_lseek_r':
lseekr.c:(.text._lseek_r+0x12): undefined reference to `_lseek'
/opt/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7e-m/fpu/libc.a(lib_a-readr.o): In function `_read_r':
readr.c:(.text._read_r+0x12): undefined reference to `_read'
/opt/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7e-m/fpu/libc.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk'
/opt/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7e-m/fpu/libc.a(lib_a-fstatr.o): In function `_fstat_r':
fstatr.c:(.text._fstat_r+0x10): undefined reference to `_fstat'
/opt/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7e-m/fpu/libc.a(lib_a-isattyr.o): In function `_isatty_r':
isattyr.c:(.text._isatty_r+0xc): undefined reference to `_isatty'
collect2: error: ld returned 1 exit status
Makefile:219: recipe for target 'all' failed
make: *** [all] Error 1

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keer_zu|  楼主 | 2021-6-24 09:57 | 显示全部楼层
解决:
添加选项:
-std=gnu99 --specs=nosys.specs


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