compilation with nano.spec fails

hey,

i am trying to link an embedded project with nano.spec and gcc-arm-none-eabi-4_9-2015q1 which fails. with version 4.8 everything was fine.

Btw linking with nosys.spec works flawless but results in a "huge" binary so i would prefer using nano.spec again.

Here is the error output:
  LD main.elf
/opt/gcc-arm-none-eabi-4_9-2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/lib/armv7-m/libc_nano.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk'
/opt/gcc-arm-none-eabi-4_9-2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/lib/armv7-m/libc_nano.a(lib_a-closer.o): In function `_close_r':
closer.c:(.text._close_r+0xc): undefined reference to `_close'
/opt/gcc-arm-none-eabi-4_9-2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/lib/armv7-m/libc_nano.a(lib_a-lseekr.o): In function `_lseek_r':
lseekr.c:(.text._lseek_r+0x10): undefined reference to `_lseek'
/opt/gcc-arm-none-eabi-4_9-2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/lib/armv7-m/libc_nano.a(lib_a-readr.o): In function `_read_r':
readr.c:(.text._read_r+0x10): undefined reference to `_read'
/opt/gcc-arm-none-eabi-4_9-2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/lib/armv7-m/libc_nano.a(lib_a-fstatr.o): In function `_fstat_r':
fstatr.c:(.text._fstat_r+0xe): undefined reference to `_fstat'
/opt/gcc-arm-none-eabi-4_9-2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/lib/armv7-m/libc_nano.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:86: recipe for target 'main.elf' failed
make: *** [main.elf] Error 1