freebsd에서 __stack_chk_guard에 관한 문의입니다

컴파일 스크립트는 다음과 같습니다.
근데 아무리 봐도 __stack_chk_guard와 __stack_chk_fail이 어떤 에러인지 잘 모르겠습니다.

gcc -o okname okname.o stdsoap2.o dom.o soapC.o soapClient.o okname_IPIN_DEC.o okname_IPIN_KEY.o okname_IPIN_RN.o okname_RN.o oknametypes.o datetime.o logf.o ipcheck.o profile.o okname_RN_core.o jstrtok.o okname_IPIN_ENC.o IconvString.o okname_AUTH_POPUP.o -g -static -D_DEBUG -DFREEBSD -I. -I/home/kcb/iconv-2.0_3/include -L../lib/freebsd -lcytrop_lib -L/home/kcb/iconv-2.0_3/lib -lbiconv -lc -lcompat
/home/kcb/iconv-2.0_3/lib/libbiconv.a(aliases.o)(.text+0x1e1): In function `iconv_get_aliases':
: undefined reference to `__stack_chk_guard'
/home/kcb/iconv-2.0_3/lib/libbiconv.a(aliases.o)(.text+0x206): In function `iconv_get_aliases':
: undefined reference to `__stack_chk_guard'
/home/kcb/iconv-2.0_3/lib/libbiconv.a(aliases.o)(.text+0x421): In function `iconv_get_aliases':
: undefined reference to `__stack_chk_fail'
/home/kcb/iconv-2.0_3/lib/libbiconv.a(ccs.o)(.text+0x2a1): In function `iconv_ccs_init':
: undefined reference to `__stack_chk_guard'
/home/kcb/iconv-2.0_3/lib/libbiconv.a(ccs.o)(.text+0x305): In function `iconv_ccs_init':
: undefined reference to `__stack_chk_guard'
/home/kcb/iconv-2.0_3/lib/libbiconv.a(ccs.o)(.text+0x44c): In function `iconv_ccs_init':
: undefined reference to `__stack_chk_fail'