httpd启动不能加载模块

最近想把原来在RHEL4.X下安装的软件移植到RHEL5.4上，费劲千辛万苦的努力，终于应用程序可以跑了，但是最后卡在HTTP上，由于程序需要些设置，启动APACHE的时候，发现不能启动，报错如下。。。

[root@risserver ~]# service httpd start
Starting httpd:
[root@risserver ~]# service httpd stop
Stopping httpd: [ OK ]
[root@risserver ~]# service httpd start
Starting httpd: httpd: Syntax error on line 206 of /etc/httpd/conf/httpd.conf: Cannot load /etc/httpd/modules/mod_jk2.so into server: /etc/httpd/modules/mod_jk2.so: undefined symbol: apr_pool_get_parent
[FAILED]

OK,那我重新编译下这个模块，接着操作如下：

[root@risserver ~]# apxs -c -n -a -i /usr/lib/httpd/modules/mod_jk2.so
/usr/lib/apr-1/build/libtool --silent --mode=link gcc -o /usr/lib/httpd/modules/mod_jk2.la -rpath /usr/lib/httpd/modules -module -avoid-version /usr/lib/httpd/modules/mod_jk2.so
/usr/lib/httpd/build/instdso.sh SH_LIBTOOL='/usr/lib/apr-1/build/libtool' /usr/lib/httpd/modules/mod_jk2.la /usr/lib/httpd/modules
/usr/lib/apr-1/build/libtool --mode=install cp /usr/lib/httpd/modules/mod_jk2.la /usr/lib/httpd/modules/
cp /usr/lib/httpd/modules/.libs/mod_jk2.so /usr/lib/httpd/modules/mod_jk2.so
cp /usr/lib/httpd/modules/.libs/mod_jk2.lai /usr/lib/httpd/modules/mod_jk2.la
cp /usr/lib/httpd/modules/.libs/mod_jk2.a /usr/lib/httpd/modules/mod_jk2.a
chmod 644 /usr/lib/httpd/modules/mod_jk2.a
ranlib /usr/lib/httpd/modules/mod_jk2.a
PATH="$PATH:/sbin" ldconfig -n /usr/lib/httpd/modules
----------------------------------------------------------------------
Libraries have been installed in:
/usr/lib/httpd/modules

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
   - use the `-Wl,--rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
chmod 755 /usr/lib/httpd/modules/mod_jk2.so

看到这里，我以为大功可以告成了，

[root@risserver ~]# service httpd start
Starting httpd: httpd: Syntax error on line 206 of /etc/httpd/conf/httpd.conf: Can't locate API module structure `jk2_module' in file /etc/httpd/modules/mod_jk2.so: /etc/httpd/modules/mod_jk2.so: undefined symbol: jk2_module
[FAILED]

这时有点懵了，咋搞的啊，RP太背了啊，再来一次

[root@risserver ~]# apxs -c /usr/lib/httpd/modules/mod_jk2.so
/usr/lib/apr-1/build/libtool --silent --mode=link gcc -o /usr/lib/httpd/modules/mod_jk2.la -rpath /usr/lib/httpd/modules -module -avoid-version /usr/lib/httpd/modules/mod_jk2.so

[root@risserver ~]# apxs -n -a -i /usr/lib/httpd/modules/mod_jk2.so
/usr/lib/httpd/build/instdso.sh SH_LIBTOOL='/usr/lib/apr-1/build/libtool' /usr/lib/httpd/modules/mod_jk2.so /usr/lib/httpd/modules
/usr/lib/apr-1/build/libtool --mode=install cp /usr/lib/httpd/modules/mod_jk2.so /usr/lib/httpd/modules/
cp /usr/lib/httpd/modules/mod_jk2.so /usr/lib/httpd/modules/mod_jk2.so
cp: `/usr/lib/httpd/modules/mod_jk2.so' and `/usr/lib/httpd/modules/mod_jk2.so' are the same file
apxs:Error: Command failed with rc=65536
.
[root@risserver ~]# apxs -a -i /usr/lib/httpd/modules/mod_jk2.so
apxs:Error: Sorry, cannot determine bootstrap symbol name.
apxs:Error: Please specify one with option `-n'.

[root@risserver ~]# apxs -n -a -i /usr/lib/httpd/modules/mod_jk2.so

/usr/lib/httpd/build/instdso.sh SH_LIBTOOL='/usr/lib/apr-1/build/libtool' /usr/lib/httpd/modules/mod_jk2.so /usr/lib/httpd/modules
/usr/lib/apr-1/build/libtool --mode=install cp /usr/lib/httpd/modules/mod_jk2.so /usr/lib/httpd/modules/
cp /usr/lib/httpd/modules/mod_jk2.so /usr/lib/httpd/modules/mod_jk2.so
cp: `/usr/lib/httpd/modules/mod_jk2.so' and `/usr/lib/httpd/modules/mod_jk2.so' are the same file
apxs:Error: Command failed with rc=65536
.

至此，基本绝望了，不知道怎么弄了，杯具啊，离成功只差一步啊，前面那么多困难都通过了，基本程序都可以跑起来了，剩下apache不能启动。。。。。

不知道上述问题如何解决，

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