Lpc2000

Anyone know what lib's contain the following?  I can't seem to locate
it.  Or, it could be a link ordering problem, I suppose.  I get the
same errors when adding either a call to sprintf or std::stringstream

Thanks,
Steve

C:\WinARM\arm-elf\lib\libc.a(mallocr.o): In function
`_malloc_r':mallocr.c:(.text+0x430): undefined reference to `_sbrk_r'
:mallocr.c:(.text+0x5ec): undefined reference to `_sbrk_r'
C:\WinARM\arm-elf\lib\libc.a(syswrite.o): In function
`write':syswrite.c:(.text+0x24): undefined reference to `_write_r'
C:\WinARM\arm-elf\lib\libc.a(freer.o): In function
`_malloc_trim_r':mallocr.c:(.text+0x48): undefined reference to
`_sbrk_r'
:mallocr.c:(.text+0x70): undefined reference to `_sbrk_r'
:mallocr.c:(.text+0xb4): undefined reference to `_sbrk_r'
C:\WinARM\arm-elf\lib\libc.a(makebuf.o): In function
`__smakebuf':makebuf.c:(.text+0x44): undefined reference to `_fstat_r'
:makebuf.c:(.text+0xe4): undefined reference to `isatty'
C:\WinARM\arm-elf\lib\libc.a(stdio.o): In function
`__sread':stdio.c:(.text+0x1c): undefined reference to `_read_r'
C:\WinARM\arm-elf\lib\libc.a(stdio.o): In function
`__swrite':stdio.c:(.text+0x78): undefined reference to `_lseek_r'
:stdio.c:(.text+0x9c): undefined reference to `_write_r'
C:\WinARM\arm-elf\lib\libc.a(stdio.o): In function
`__sseek':stdio.c:(.text+0xc0): undefined reference to `_lseek_r'
C:\WinARM\arm-elf\lib\libc.a(stdio.o): In function
`__sclose':stdio.c:(.text+0xf8): undefined reference to `_close_r'
make: *** [main.elf] Error 1