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Full Discussion: Error with shared lIBMpi.so.1 when compiling CPP program
Top Forums Programming Error with shared lIBMpi.so.1 when compiling CPP program Post 302894436 by yifangt on Tuesday 25th of March 2014 12:59:13 PM
Old 03-25-2014
Error with shared lIBMpi.so.1 when compiling CPP program
Hello,
Met a problem when compiling a C++ program from source code without error, but when ran it there was always an error message:
Code:
./Ray: error while loading shared libraries: libmpi_cxx.so.1: cannot open shared object file: No such file or directory

As the error points to openmpi which was installed at /usr/lib64/openmpi/bin/mpicxx
Code:
$ locate libmpi_cxx.so.1
$ /usr/lib64/openmpi/lib/libmpi_cxx.so.1

Then I did following without enough understanding
Code:
export LD_LIBRARY_PATH=/usr/lib64/openmpi/lib:$LD_LIBRARY_PATH

and compile again. It worked!
Now my questions are:
1) When should I export the shared libraries, especially when the shared library is installed at a local directory?
2) Is there any rule to find out any shared library is needed for the compilation of a program besides the system ones /lib:usr/lib:usr/local/lib?
I guessed out the needed library for my example is located at /usr/lib64/openmpi/lib as mpicxx is located at
/usr/lib64/openmpi/bin/
Thanks a lot!
 

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LEARN ABOUT MOJAVE

libplot

libplot(3LIB)                                                   Interface Libraries                                                  libplot(3LIB)

NAME

       libplot, lib300, lib300s, lib4014, lib450, libvt0 - graphics interface libraries

SYNOPSIS

       cc [ flag... ] file... -lplot [ library... ]
       #include <plot.h>

DESCRIPTION

       Functions in this library generate graphics output.

INTERFACES

       The  shared  object  libplot.so.1  provides  the  public interfaces defined below. See intro(3) for additional information on shared object
       interfaces.

       arc                           box
       circle                        closepl
       closevt                       cont
       erase                         label
       line                          linemod
       move                          openpl
       openvt                        point
       space

FILES

       /usr/lib/libplot.so.1                   shared object

       /usr/lib/64/libplot.so.1                64-bit shared object

       /usr/lib/lib300.so.1                    shared object

       /usr/lib/64/lib300.so.1                 64-bit shared object

       /usr/lib/lib300s.so.1                   shared object

       /usr/lib/64/lib300s.so.1                64-bit shared object

       /usr/lib/lib4014.so.1                   shared object

       /usr/lib/64/lib4014.so.1                64-bit shared object

       /usr/lib/lib450.so.1                    shared object

       /usr/lib/64/lib450.so.1                 64-bit shared object

       /usr/lib/libvt0.so.1                    shared object

       /usr/lib/64/libvt0.so.1                 64-bit shared object

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsl (32-bit)             |
       +-----------------------------+-----------------------------+
       |                             |SUNWcslx (64-bit)            |
       +-----------------------------+-----------------------------+
       |MT-Level                     |Unsafe                       |
       +-----------------------------+-----------------------------+

SEE ALSO

       pvs(1), intro(3), attributes(5)

SunOS 5.10                                                          13 Jun 2003                                                      libplot(3LIB)
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