[Jailkit-dev] Hi problem install jail -

[Thai Ha Duong]

Hi i am tryng to run make and that is what i got back 
$ make
gcc  -g -O2 -g -O2 -Wall -pipe -c -o jk_chrootsh.o jk_chrootsh.c
jk_chrootsh.c: In function `main':
jk_chrootsh.c:176: error: `errno' undeclared (first use in this function)
jk_chrootsh.c:176: error: (Each undeclared identifier is reported only once
jk_chrootsh.c:176: error: for each function it appears in.)
jk_chrootsh.c:293: warning: array size (255) is smaller than minimum required (1024)
*** Error code 1

Stop in /home/duongthaiha/jailkit/src.
*** Error code 1

Stop in /home/duongthaiha/jailkit (line 39 of Makefile).
$

Can you please tell me what i have done wrong? What should i do with that?

Thanks you very much