Thread: warning: _close is not implemented and will always fail?

Trying to compile a program and am getting the following output:

Code:

/opt/m68k/m68k-elf/lib/libc.a(closer.o): In function `_close_r':
../../../../../newlib-1.14.0/newlib/libc/reent/closer.c:53: warning: _close is not implemented and will always fail
/opt/m68k/m68k-elf/lib/libc.a(fstatr.o): In function `_fstat_r':
../../../../../newlib-1.14.0/newlib/libc/reent/fstatr.c:62: warning: _fstat is not implemented and will always fail
/opt/m68k/m68k-elf/lib/libc.a(makebuf.o): In function `__smakebuf':
../../../../../newlib-1.14.0/newlib/libc/stdio/makebuf.c:96: warning: isatty is not implemented and will always fail
/opt/m68k/m68k-elf/lib/libc.a(lseekr.o): In function `_lseek_r':
../../../../../newlib-1.14.0/newlib/libc/reent/lseekr.c:58: warning: _lseek is not implemented and will always fail
/opt/m68k/m68k-elf/lib/libc.a(openr.o): In function `_open_r':
../../../../../newlib-1.14.0/newlib/libc/reent/openr.c:59: warning: _open is not implemented and will always fail
/opt/m68k/m68k-elf/lib/libc.a(readr.o): In function `_read_r':
../../../../../newlib-1.14.0/newlib/libc/reent/readr.c:58: warning: _read is not implemented and will always fail
/opt/m68k/m68k-elf/lib/libc.a(writer.o): In function `_write_r':
../../../../../newlib-1.14.0/newlib/libc/reent/writer.c:58: warning: _write is not implemented and will always fail

My command is this:

Code:

make[1]: Entering directory `/cygdrive/c/build'
m68k-elf-ld -M -cref -Mex Mex.Mex -T ../Mex.ld -L`m68k-elf-gcc -m68000 --print-libgcc | sed -e "s/libgcc.a//g"`  -o Map  MexMain.o file1.o file2.o file3.o file4.o file5.o file6.o file7.o file8.o file9.o -lgcc -lc -lnosys -lg

Anyone have any idea how to get rid of the warnings?

It sounds like the functions aren't implemented, so the only way would be to switch compiler or not use the functions.

Or looks like you miss some library.

You could try renaming those functions to their proper names (i.e. without the leading underscore). Only VC++ annoys people by putting superfluous underscores where they don't belong.