chkrootkit 설치시 에러

솔라리스에서 chkrootkit-0.44 를 설치 하는 중에..

tar 로 압축을 풀고..

chkrootkit-0.44 폴더에서

% make sense 하면 다음과 같은 에러가 뜨는데..

원인을 잘모르겠습니다...

gcc -DHAVE_LASTLOG_H -o chklastlog chklastlog.c
chklastlog.c:86: syntax error before "struct"
chklastlog.c: In function `main':
chklastlog.c:98: storage size of `lastlog_ent' isn't known
chklastlog.c:135: `O_RDONLY' undeclared (first use in this function)
chklastlog.c:135: (Each undeclared identifier is reported only once
chklastlog.c:135: for each function it appears in.)
chklastlog.c:173: sizeof applied to an incomplete type
chklastlog.c:174: sizeof applied to an incomplete type
chklastlog.c:176: sizeof applied to an incomplete type
chklastlog.c: At top level:
chklastlog.c:207: syntax error before "struct"
make: *** [chklastlog] Error 1

답변 부탁합니다..