Question

Atmel Studio 6编译出错， 用<stdio.h>头文件的sprintf()函数就出现下面的问题了，这是怎么回事

C文件的sprintf(str1,"%d",len);这个函数编译出错，具体错误如下？请高手帮忙解决

d:/program files/atmel/atmel studio 6.0/extensions/atmel/armgcc/3.3.1.128/armgcctoolchain/bin/../lib/gcc/arm-none-eabi/4.7.0/../../../../arm-none-eabi/lib/thumb\libc.a(lib_a-sbrkr.o): In function `_sbrk_r':
/usr/local/avr32studio/hudson/workspace/arm-gnu-toolchain/.build/src/newlib-1.19.0/newlib/libc/reent/sbrkr.c(60,1): undefined reference to `_sbrk'
d:/program files/atmel/atmel studio 6.0/extensions/atmel/armgcc/3.3.1.128/armgcctoolchain/bin/../lib/gcc/arm-none-eabi/4.7.0/../../../../arm-none-eabi/lib/thumb\libc.a(lib_a-abort.o): In function `abort':
/usr/local/avr32studio/hudson/workspace/arm-gnu-toolchain/.build/src/newlib-1.19.0/newlib/libc/stdlib/abort.c(63,1): undefined reference to `_exit'
d:/program files/atmel/atmel studio 6.0/extensions/atmel/armgcc/3.3.1.128/armgcctoolchain/bin/../lib/gcc/arm-none-eabi/4.7.0/../../../../arm-none-eabi/lib/thumb\libc.a(lib_a-signalr.o): In function `_kill_r':
/usr/local/avr32studio/hudson/workspace/arm-gnu-toolchain/.build/src/newlib-1.19.0/newlib/libc/reent/signalr.c(61,1): undefined reference to `_kill'
d:/program files/atmel/atmel studio 6.0/extensions/atmel/armgcc/3.3.1.128/armgcctoolchain/bin/../lib/gcc/arm-none-eabi/4.7.0/../../../../arm-none-eabi/lib/thumb\libc.a(lib_a-signalr.o): In function `_getpid_r':
/usr/local/avr32studio/hudson/workspace/arm-gnu-toolchain/.build/src/newlib-1.19.0/newlib/libc/reent/signalr.c(96,1): undefined reference to `_getpid'
collect2.exe(0,0): ld returned 1 exit status
make: *** [MeterBus.elf] Error 1
The command exited with code 2.
Done executing task "RunCompilerTask" -- FAILED.
Done building target "CoreRebuild" in project "MeterBus.cproj" -- FAILED.
Done building project "MeterBus.cproj" -- FAILED.
Build FAILED.
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========

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Answer 1

你检查一下你的编译环境，可能有错。