Problem with automake/libtool combination

[sdeepak]

Hello !

I'm having a problem with libtool/automake. I'm a newbie at this and hope
to get some pointers.
If this is not the group where I should be asking this, could somebody tell
me the right group ?

I?m using the Autotools to build a software.
First I have to build a shared library from the sources present in a
directory.
I have used the LTLIBRARIES primary for this in the Makefile.am.
The libtool commands generated as a result are ?

-----
c++ -DPACKAGE=\"libomni\" -DVERSION=\"1\" -I. -I. -DUSE_DYNAMIC_LINKING=1
-I/usr/lib/glib/include -g -O2 -Wp,-MD,.deps/DeviceInstance.pp -c
DeviceInstance.cpp  -fPIC -DPIC -o .libs/DeviceInstance.lo
c++ -DPACKAGE=\"libomni\" -DVERSION=\"1\" -I. -I. -DUSE_DYNAMIC_LINKING=1
-I/usr/lib/glib/include -g -O2 -Wp,-MD,.deps/DeviceInstance.pp -c
DeviceInstance.cpp -o DeviceInstance.o >/dev/null 2>&1
mv -f .libs/DeviceInstance.lo DeviceInstance.lo
-------

I use the library thus built later to link with other executables and
libraries.
But, I?m getting errors that some symbol references are not resolved.

However, if I use the libtool directly (without Automake/Makefile.am coming
into picture), I am able to generate a shared library which has no problems
of unresolved symbol references.

I give a plain libtool commands like

------
libtool gcc ?c DeviceInstance.cpp
(and some more similar commands to compile other source files?)
Then?
libtool gcc ?rpath /usr/local/lib ?o libomni.la *.lo
-------

The futher commands automatically generated by libtool in this case are

-------
rm -f .libs/DeviceInstance.lo
c++ -c -I /usr/lib/glib/include DeviceInstance.cpp  -fPIC -DPIC -o
.libs/DeviceInstance.lo
c++ -c -I /usr/lib/glib/include DeviceInstance.cpp -o DeviceInstance.o
>/dev/null 2>&1
mv -f .libs/DeviceInstance.lo DeviceInstance.lo

(and so on)
-------

I will be glad if I could get the following clarified

1.   Why does the error occur in the first case ? Pl. note that the shared
library is created, but later when linking with other programs, unresolved
references emerge. So, what options should I use/remove in the first case
to get it to work like the second case ?
2.   The .deps/DeviceInstance.pp does not exist (is not created). However,
the dependencies are there in a file called .deps/DeviceInstance.P. Could
there be anything wrong here ?

I would be happy to give more details about my problem? like the
Makefile.am or the source structure etc.

Thanks,
Deepak.