[Mail] qmail的安装错误？？？

[weixin_38062902]

Qmail_setup-v1.5.4a.tar.gz 我的系统是redhat7.2
进行安装，但是每一次到sqwebmail的时候都有错误，我单独把sqwebmail进行编译也不行，我下载了好几个版本的sqwebmail都不行，怪了
我是这样做的
[root@yahtour-lijian Qmail_setup]# ./configure --prefix=/var/qmail/webmail --with-authvchkpw --enable-webpass=vpopmail --enable-cgibindir=/usr/local/apache/cgi-bin  --enable-imagedir=/usr/local/apache/htdocs/webmail --enable-mimetypes=/usr/local/apache/htdocs
没有错误
[root@yahtour-lijian sqwebmail-3.3.4.20020707]# make configure-check
SqWebMail CGI will be installed in /usr/local/apache/cgi-bin
Images will be installed in /usr/local/apache/htdocs/webmail
make[1]: Entering directory `/Qmail_setup/sqwebmail-3.3.4.20020707/sqwebmail'
URL to the image directory is /webmail
make[1]: Leaving directory `/Qmail_setup/sqwebmail-3.3.4.20020707/sqwebmail'
然后
[root@yahtour-lijian sqwebmail-3.3.4.20020707]# make
Making all in numlib
make[1]: Entering directory `/Qmail_setup/sqwebmail-3.3.4.20020707/numlib'
gcc -DHAVE_CONFIG_H -I. -I. -I.     -g -O2 -Wall -c strhinot.c
strhinot.c:10:27: string.h: No such file or directory
make[1]: *** [strhinot.o] Error 1
make[1]: Leaving directory `/Qmail_setup/sqwebmail-3.3.4.20020707/numlib'
make: *** [all-recursive] Error 1
就有错误了，哎，搞了一天了。就是不行。请高手看看什么地方不对