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[netCDF #LNM-552163]: NetCDF Error when using Makefile

Hi Jon,

> When trying to compile a C++ program that is linking in libnetcdf.so.0,
> I point my Makefile to /opt/local/lib (which is where the libraries were
> installed). I can see the file there, but it gives the error message:
> 
> "Error while loading shared libraries: libnetcdf.so.0: cannot open shared
> object file : No such file or directory"

This can occur for several reasons:

  - libnetcdf.so.0.0.0 might be a 32-bit library when your application
    needs 64-bit or vice-versa.  You can determine this with the
    "file" command.
  - You may need to use libtool or specify LD_LIBRARY_PATH or
    LD_RUN_PATH or have the system library path configured to include
    /opt/local/lib.

Here's the explanation and description of what to try from the output
of "make install" when you're installing shared libraries:

----------------------------------------------------------------------
Libraries have been installed in:
   /opt/local/lib

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
   - use the `-Wl,-rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------

--Russ

> We are using CentOS 5.5 with the NetCDF 4.1.2-beta 2 installed.
> 
> Also, please see below for what is contained (partially) in /opt/local/lib:
> 
> -rw-r--r-- 1 root root 1.3M Oct 1 2009 libnco.a
> -rwxr-xr-x 1 root root 3.3M Oct 1 2009 libnco_c++-3.9.9.so
> -rw-r--r-- 1 root root 1003K Oct 1 2009 libnco_c++.a
> -rwxr-xr-x 1 root root 992 Oct 1 2009 libnco_c++.la
> lrwxrwxrwx 1 root root 19 Oct 1 2009 libnco_c++.so -> libnco_c++-3.9.9.so
> -rwxr-xr-x 1 root root 964 Oct 1 2009 libnco.la
> lrwxrwxrwx 1 root root 15 Oct 1 2009 libnco.so -> libnco-3.9.9.so
> -rw-r--r-- 1 root root 2.5M Mar 4 16:14 libnetcdf.a
> -rw-r--r-- 1 root root 492K Mar 4 16:14 libnetcdf_c++.a
> -rwxr-xr-x 1 root root 1.1K Mar 4 16:14 libnetcdf_c++.la
> lrwxrwxrwx 1 root root 22 Mar 4 16:14 libnetcdf_c++.so -> 
> libnetcdf_c++.so.0.0.0
> lrwxrwxrwx 1 root root 22 Mar 4 16:14 libnetcdf_c++.so.0 -> 
> libnetcdf_c++.so.0.0.0
> -rwxr-xr-x 1 root root 345K Mar 4 16:14 libnetcdf_c++.so.0.0.0
> -rw-r--r-- 1 root root 793K Mar 4 16:14 libnetcdff.a
> -rwxr-xr-x 1 root root 1.1K Mar 4 16:14 libnetcdff.la
> lrwxrwxrwx 1 root root 19 Mar 4 16:14 libnetcdff.so -> libnetcdff.so.0.0.0
> lrwxrwxrwx 1 root root 19 Mar 4 16:14 libnetcdff.so.0 -> libnetcdff.so.0.0.0
> -rwxr-xr-x 1 root root 662K Mar 4 16:14 libnetcdff.so.0.0.0
> -rwxr-xr-x 1 root root 1.1K Mar 4 16:14 libnetcdf.la
> lrwxrwxrwx 1 root root 18 Mar 4 16:14 libnetcdf.so -> libnetcdf.so.0.0.0
> lrwxrwxrwx 1 root root 18 Mar 4 16:14 libnetcdf.so.0 -> libnetcdf.so.0.0.0
> -rwxr-xr-x 1 root root 1.9M Mar 4 16:14 libnetcdf.so.0.0.0
> -rw-r--r-- 1 root root 48K Jul 1 2009 libv5d.a

Russ Rew                                         UCAR Unidata Program
address@hidden                      http://www.unidata.ucar.edu



Ticket Details
===================
Ticket ID: LNM-552163
Department: Support netCDF
Priority: Normal
Status: Closed