"gdb httpd" cant step into apr(-util)

[Danie Qian]

I am getting this error when trying to single step into one of the apr 
functions:

(gdb) s
apr_dbd_pvselect (driver=0xb7352208, pool=0x93aca30, handle=0x91c1618, 
res=0xb7352208, statement=0x91c4140, random=0)
   at dbd/apr_dbd.c:299
299     dbd/apr_dbd.c: No such file or directory.
       in dbd/apr_dbd.c
Do I have to statically compile apr into httpd? how to do that?

I wish someone here can give me a quick answer. Thanks.