> I had simillar problem on FirebirdCS1.5 (there was symlinks to
> libgds.so
> and libfbclinet.so, and file libib_utils exists).
>
> I have installed FirebirdSS1.5 and all is fine. I don't know the
> reason, but it works.

Yes, I use Classic Server and I have
files in /usr/local/firebird/lib
libfbclient.so -> libfbclient.so.1
libfbclient.so.1 -> libfbclient.so.1.5.0
libfbclient.so.1.5.0
libfbembed.so -> libfbembed.so.1
libfbembed.so.1 -> libfbembed.so.1.5.0
libfbembed.so.1.5.0
libib_util.so
and files in /usr/lib
/usr/lib/libgds.so -> /usr/local/firebird/lib/libfbclient.so

but configure can't find libs :(

I am going to build SS version of firebird and check php with it.