在线求解,安装zlib-1.2.3时报错!

jeautionses

Checking for gcc...
Building static library libz.a version 1.2.3 with cc.
Checking for unistd.h... No.
Checking whether to use vs[n]printf() or s[n]printf()... using s  [n]printf()
Checking for snprintf() in stdio.h... No.
    WARNING: snprintf() not found, falling back to sprintf(). zlib     
    can build but will be open to possible buffer-overflow security   
    vulnerabilities.
Checking for return value of sprintf()... No.
    WARNING: apparently sprintf() does not return a value. zlib  
    can build but will be open to possible string-format security     
    vulnerabilities.
Checking for errno.h... No.
Checking for mmap support... No.
这个错误是我刚刚装完系统,只设置了网络,执行./configure -prefix时出的错(系统是Centos 5.1)