[arm-gnu] library linking (printf)

[Arifa Khan <arifa.khan@xxxxxxxxxxxxxxx>]

Hi,

I'm having trouble using C command "printf" in my code. The following error occurs:

C:\Program Files\CodeSourcery\Sourcery G++ Lite\arm-none-eabi\lib\libc.a(lib_a-sbrkr.o): In function `_sbrk_r':

sbrkr.c:(.text+0x18): undefined reference to `_sbrk'

C:\Program Files\CodeSourcery\Sourcery G++ Lite\arm-none-eabi\lib\libc.a(lib_a-writer.o): In function `_write_r':

writer.c:(.text+0x20): undefined reference to `_write'

C:\Program Files\CodeSourcery\Sourcery G++ Lite\arm-none-eabi\lib\libc.a(lib_a-closer.o): In function `_close_r':

closer.c:(.text+0x18): undefined reference to `_close'

C:\Program Files\CodeSourcery\Sourcery G++ Lite\arm-none-eabi\lib\libc.a(lib_a-fstatr.o): In function `_fstat_r':

fstatr.c:(.text+0x1c): undefined reference to `_fstat'

C:\Program Files\CodeSourcery\Sourcery G++ Lite\arm-none-eabi\lib\libc.a(lib_a-isattyr.o): In function `_isatty_r':

isattyr.c:(.text+0x18): undefined reference to `_isatty'

C:\Program Files\CodeSourcery\Sourcery G++ Lite\arm-none-eabi\lib\libc.a(lib_a-lseekr.o): In function `_lseek_r':

lseekr.c:(.text+0x20): undefined reference to `_lseek'

C:\Program Files\CodeSourcery\Sourcery G++ Lite\arm-none-eabi\lib\libc.a(lib_a-readr.o): In function `_read_r':

readr.c:(.text+0x20): undefined reference to `_read'

collect2: ld returned 1 exit status

cs-make: *** [....elf] Error 1

I've followed the knowledgebase entry on this site about specifiying the target board, which I have done.
I also use my own linker script rather than the ones provided with CodeSourcery distribution.
The command option is "arm-none-eabi-gcc -lc -lgcc -lc" to try to do a multiple search.
Anyone have any suggestions?

Thanks,
AK


Arifa Khan
Embedded Software Engineer

T       +44 (0)1233 625252
F       +44 (0)1233 645897

arifa.khan@xxxxxxxxxxxxxxx



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