To run a program linked with the shared version of the library
the operating system must be able to locate the corresponding
.so file at runtime. If the library cannot be found, the
following error will occur: $ ./a.out ./a.out: error while
loading shared libraries: libgsl.so.0: cannot open shared object
file: No such file or directory To avoid this error, either
modify the system dynamic linker define the shell variable
LD_LIBRARY_PATH to include the directory where the library is
installed. For example, in the Bourne shell ( the library search
path can be set with the following commands: $
LD_LIBRARY_PATH=/usr/local/lib $ export LD_LIBRARY_PATH $
./example In the C-shell ( /bin/tcsh) the equivalent % setenv
LD_LIBRARY_PATH /usr/local/lib The standard prompt for the
C-shell in the example above is the percent character ‘%’, and
should not be typed as part of the command. To save retyping
these commands each session they can be placed in an individual
or system-wide login file. To compile a statically linked