ldd can't find library in LD_LIBRARY_PATH

问题

I'm trying to get a system up and running, and am having problems with the OpenMotif shared libraries. I have their directory in LD_LIBRARY_PATH, but it still can't find them.

Here's an example:

[root@intrepid netcool]# ldd /opt/netcool/omnibus/platform/linux2x86/bin/nco_* |grep 'not found'
    libXm.so.3 => not found
    libXpm.so.4 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
    libXpm.so.4 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
[root@intrepid netcool]# find /usr/ -name libXm.so.3 
/usr/lib64/libXm.so.3
[root@intrepid netcool]# find /usr/ -name libXpm.so.4
/usr/lib64/libXpm.so.4
[root@intrepid netcool]# echo $LD_LIBRARY_PATH
/opt/netcool/omnibus//platform/linux2x86/lib/:/opt/netcool//platform/linux2x86/lib/:/usr/lib/:/usr/lib64/

I'm probably doing something stupid, but I can't think of anything else to try.

EDIT: To answer a couple of the questions asked below:

[root@intrepid netcool]# export LD_LIBRARY_PATH
[root@intrepid netcool]# ldd /opt/netcool/omnibus/platform/linux2x86/bin/nco_* |grep 'not found'
    libXm.so.3 => not found
    libXpm.so.4 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
    libXpm.so.4 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
[root@intrepid netcool]# ldconfig
[root@intrepid netcool]# ldd /opt/netcool/omnibus/platform/linux2x86/bin/nco_* |grep 'not found'
    libXm.so.3 => not found
    libXpm.so.4 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
    libXpm.so.4 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found
    libXm.so.3 => not found

Ok, just tried to run one of the executables:

# ./bin/nco_xigen 
/opt/netcool//omnibus/platform/linux2x86/bin/nco_xigen: error while loading shared libraries: libXm.so.3: wrong ELF class: ELFCLASS64

Is this a 32 bit/64 bit thing?

回答1:

Did you export LD_LIBRARY_PATH? the export keyword tells Bash to send any variables to subprocesses - otherwise ldd will never see LD_LIBRARY_PATH.

回答2:

The binaries I had were looking for the 32-bit versions of the shared libraries, I had the 64-bit installed. Stupid mistake. LDD didn't produce a very insightful error message, but the binary did when I tried to run it.

来源：https://stackoverflow.com/questions/10341044/ldd-cant-find-library-in-ld-library-path

标签

unix

shared-libraries

ldd