modsecurity的安装问题

偶现在打算给apache里装modsecurity
在编译时候出现了下面的代码，高人来指点下阿？提前谢谢啦
> /usr/local/apache/bin/apxs -cia mod_security.c
gcc -O2 -DSOLARIS2=280 -DDEV_RANDOM=/dev/random -fPIC -DSHARED_CORE -DSHARED_MODULE -I/usr/local/apache_1.3.33/include  -c mod_security.c
mod_security.c: In function `parse_cookies_v0':
mod_security.c:1655: warning: assignment makes pointer from integer without a cast
mod_security.c:1702: warning: assignment makes pointer from integer without a cast
mod_security.c: In function `cmd_filter_selective':
mod_security.c:4739: warning: assignment makes pointer from integer without a cast
mod_security.c:4854: warning: assignment makes pointer from integer without a cast
/usr/ccs/bin/as: File exists
/usr/ccs/bin/as: error: cannot open output file "mod_security.o"
apxs:Break: Command failed with rc=1
ps本人对apache和linux都还不太熟悉的说。。。
安装modsecurity出现错误或者什么，可能对原有的apache服务器产生影响吗，比如不能正常工作什么的。

一样的问题，我也在找解决方法，如果已经解决，请共享一下，先谢谢了