Hei to all!

When i was trying to #make setup check i got this error
here is an output of it:

./compile fmt_str.c
./compile fmt_strn.c
./compile fmt_uint.c
./compile fmt_uint0.c
./compile fmt_ulong.c
./compile scan_ulong.c
./compile scan_8long.c
./makelib fs.a fmt_str.o fmt_strn.o fmt_uint.o fmt_uint0.o \
fmt_ulong.o scan_ulong.o scan_8long.o
./compile datetime.c
./compile datetime_un.c
./makelib datetime.a datetime.o datetime_un.o
./compile auto-str.c
auto-str.c:9: warning: conflicting types for built-in function `puts'
auto-str.c: In function `main':
auto-str.c:17: warning: return type of `main' is not `int'
./load auto-str substdio.a error.a str.a
substdio.a(substdo.o)(.text+0x47): In function `allwrite':
: undefined reference to `errno'
collect2: ld returned 1 exit status
make: *** [auto-str] Error 1
root@server:/var/qmail/qmail-1.03#

any ideas?