dso build problem

Would anyone have a clue how I could get past this problem ? My "file" version is file-3.27 on a Debian potato system. --markc |checking if libtool supports shared libraries... no | |*** Warning: the command libtool uses to detect shared libraries, |*** /usr/bin/file, produces output that libtool cannot recognize. |*** The result is that libtool may fail to recognize shared libraries |*** as such. This will affect the creation of libtool libraries that |*** depend on shared libraries, but programs linked with such libtool |*** libraries will work regardless of this problem. Nevertheless, you |*** may want to report the problem to your system manager and/or to |*** bug-libtool@gnu.org | |checking whether to build shared libraries... no |/usr/bin/apxs -i -a -n php4 libs/libphp4.so |cp libs/libphp4.so /usr/lib/apache/1.3/libphp4.so |cp: libs/libphp4.so: No such file or directory |./buildconf | |./configure \ | --with-apxs=/usr/bin/apxs \ | --enable-versioning \ | --with-mysql \ | --with-xml \ | --with-wddx \ | --enable-freetype-4bit-antialias-hack \ | --with-ftp \ | --with-gd \ | --with-ttf \ | --with-imap \ | --with-ical \ | --enable-trans-sid \ | --with-zlib \ | --enable-track-vars \ | --enable-debug \ | --enable-debugger \ | --sysconfdir=/etc | |make && make install