Re: Problem using dlopen

["David Dudley" <dldudley%gmail.com@localhost>]

Scanned all the source files for occurrences of 'dlopen', and blocked
each with print statements before and after.

No reference to the "nss_dns.so.0" exists.

Here is the ldd list:
--------------------------------------
ldd /usr/local/EPICS/lib/netbsd-x86/libEpics.so
/usr/local/EPICS/lib/netbsd-x86/libEpics.so:
        -lc.12 => /usr/lib/libc.so.12
        -lXdmcp.6 => /usr/X11R7/lib/libXdmcp.so.6
        -lXau.6 => /usr/X11R7/lib/libXau.so.6
        -lX11.6 => /usr/X11R7/lib/libX11.so.6
        -lICE.6 => /usr/X11R7/lib/libICE.so.6
        -lSM.6 => /usr/X11R7/lib/libSM.so.6
        -lXt.6 => /usr/X11R7/lib/libXt.so.6
        -lXext.6 => /usr/X11R7/lib/libXext.so.6
        -lXmu.6 => /usr/X11R7/lib/libXmu.so.6
        -lXp.6 => /usr/X11R7/lib/libXp.so.6
        -lexpat.1 => /usr/X11R7/lib/libexpat.so.1
        -lz.1 => /usr/lib/libz.so.1
        -lfreetype.6 => /usr/X11R7/lib/libfreetype.so.6
        -lfontconfig.1 => /usr/X11R7/lib/libfontconfig.so.1
        -lXrender.1 => /usr/X11R7/lib/libXrender.so.1
        -lXrandr.2 => /usr/X11R7/lib/libXrandr.so.2
        -lXft.2 => /usr/X11R7/lib/libXft.so.2
        -lXm.0 => /usr/pkg/lib/libXm.so.0
        -lXtst.6 => /usr/X11R7/lib/libXtst.so.6
        -lposix.0 => /usr/lib/libposix.so.0
        -lpthread.0 => /usr/lib/libpthread.so.0
        -ltermcap.0 => /usr/lib/libtermcap.so.0
        -lreadline.5 => /usr/pkg/lib/libreadline.so.5
        -lcurses.6 => /usr/lib/libcurses.so.6
        -lstdc++.6 => /usr/lib/libstdc++.so.6
        -lm.0 => /usr/lib/libm387.so.0
        -lm.0 => /usr/lib/libm.so.0
        -lgcc_s.1 => /usr/lib/libgcc_s.so.1
        -l114135a4-6f6c-11d3-95bc-00104b8742df =>
/usr/local/EPICS/lib/netbsd-x86/lib114135a4-6f6c-11d3-95bc-00104b8742df.so
        -lCom => /usr/local/EPICS/lib/netbsd-x86/libCom.so
        -lca => /usr/local/EPICS/lib/netbsd-x86/libca.so
        -lcfcaa62e-8199-11d3-a77f-00104b8742df =>
/usr/local/EPICS/lib/netbsd-x86/libcfcaa62e-8199-11d3-a77f-00104b8742df.so

--------------------------------------

I went through all the libraries in /usr/local/EPICS/lib/netbsd-x86,
and none of them reference a library by that name.

This program runs great on OpenSolaris, Linux, Apple OSx, and several
other flavors of Unix.  I'm trying to port it to Net, but not having
success on this single problem.

David

On 1/4/09, Kun Niu <haoniukun%gmail.com@localhost> wrote:
> You can try to use the ldd utility to figure out if it depends on the
> specified so library file.
>
> 2009/1/5 Daniel Carosone <dan%geek.com.au@localhost>
>
>> On Sun, Jan 04, 2009 at 09:37:02PM -0600, David Dudley wrote:
>> > I have a library that won't load with dlopen.  Even worse, when
>> > dlerror is called, it returns the wrong library name.
>> >
>> > The library is named
>> > /usr/local/EPICS/lib/netbsd-x86/libEpics.so,
>> >
>> > I surrounded the call with print statements so I could capture it,
>> > I get
>> > -------------------------------------------------
>> > Doing dlopen on /usr/local/EPICS/lib/netbsd-x86/libEpics.so
>> > Back from dlopen
>> > Got error
>> > Shared object "nss_dns.so.0" not found
>> > -------------------------------------------------
>> > This is all in a single thread, inline.
>>
>>
>> I guess your libEpics.so is itself marked as being dependent on
>> nss_dns.so.0, and this is not being satisfied.  Perhaps the link
>> invocation for building libEpics should be investigated.
>>
>> --
>> Dan.
>>
>
>
>
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