error when compiling qmail-conf

[Hiu Yen Onn]

hi,

i been looking at the http://www.din.or.jp/~ushijima/qmail-conf/install.html

and trying to do steps 7
# Compile the qmail-conf programs: make

but, it throws an error for me.

./load auto-str djb.a
djb.a(buffer_put.o)(.text+0x43): In function `allwrite':
: undefined reference to `errno'
collect2: ld returned 1 exit status
make: *** [auto-str] Error 1

so, anyone can help me to troubleshoot? thanks.