d:/eclipse/eclipse/gnu tools arm embedded/5.4 2016q3/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk'
d:/eclipse/eclipse/gnu tools arm embedded/5.4 2016q3/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-writer.o): In function `_write_r':
writer.c:(.text._write_r+0x12): undefined reference to `_write'
d:/eclipse/eclipse/gnu tools arm embedded/5.4 2016q3/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-closer.o): In function `_close_r':
closer.c:(.text._close_r+0xc): undefined reference to `_close'
d:/eclipse/eclipse/gnu tools arm embedded/5.4 2016q3/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-fstatr.o): In function `_fstat_r':
fstatr.c:(.text._fstat_r+0x10): undefined reference to `_fstat'
d:/eclipse/eclipse/gnu tools arm embedded/5.4 2016q3/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-isattyr.o): In function `_isatty_r':
isattyr.c:(.text._isatty_r+0xc): undefined reference to `_isatty'
d:/eclipse/eclipse/gnu tools arm embedded/5.4 2016q3/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-lseekr.o): In function `_lseek_r':
lseekr.c:(.text._lseek_r+0x12): undefined reference to `_lseek'
d:/eclipse/eclipse/gnu tools arm embedded/5.4 2016q3/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/lib/armv7-m\libg.a(lib_a-readr.o): In function `_read_r':
readr.c:(.text._read_r+0x12): undefined reference to `_read'
collect2.exe: error: ld returned 1 exit status
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