[arm-gnu] 2007q3 link error: undefined reference to '_sbrk' etc.

["Zhonghua" <davis.qin@xxxxxxxxxxxx>]

Hi,
    When using 2007q3 on linux, some error message display:

arm-2007q3/arm-none-eabi/lib/libc.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text+0x18): undefined reference to `_sbrk'
arm-2007q3/arm-none-eabi/lib/libc.a(lib_a-sysgetpid.o): In function `getpid':
sysgetpid.c:(.text+0x4): undefined reference to `_getpid'
arm-2007q3/arm-none-eabi/lib/libc.a(lib_a-times.o): In function `_times_r':
times.c:(.text+0x8): undefined reference to `_times'
arm-2007q3/arm-none-eabi/lib/libc.a(lib_a-writer.o): In function `_write_r':
writer.c:(.text+0x20): undefined reference to `_write'
arm-2007q3/arm-none-eabi/lib/libc.a(lib_a-closer.o): In function `_close_r':
closer.c:(.text+0x18): undefined reference to `_close'
arm-2007q3/arm-none-eabi/lib/libc.a(lib_a-lseekr.o): In function `_lseek_r':
lseekr.c:(.text+0x20): undefined reference to `_lseek'
arm-2007q3/arm-none-eabi/lib/libc.a(lib_a-readr.o): In function `_read_r':
readr.c:(.text+0x20): undefined reference to `_read'
arm-2007q3/arm-none-eabi/lib/libc.a(lib_a-makebuf.o): In function `__smakebuf':
makebuf.c:(.text+0xf8): undefined reference to `isatty'
arm-2007q3/arm-none-eabi/lib/libc.a(lib_a-fstatr.o): In function `_fstat_r':
fstatr.c:(.text+0x1c): undefined reference to `_fstat'
collect2: ld returned 1 exit statusI have already refered to the https://support.codesourcery.com/GNUToolchain/kbentry57.I have created a new link script: % arm-none-eabi-ld --verbose > def.lnk and remove the SERACH_DIR.After this, I compiled a file:% arm-none-eabi-gcc -T def.lnk -o hello hello.cbut the same error happen.What I should do? Could you tell me.Davis***********************************
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