Avoid to add an empty component into LD_LIBRARY_PATH if it was not set before.

Also remove the trailing filename.

diff --git a/doc/user_guide/doxygen/pls.doc b/doc/user_guide/doxygen/pls.doc
index adf9661..2ce0e11 100644 (file)
--- a/doc/user_guide/doxygen/pls.doc
+++ b/doc/user_guide/doxygen/pls.doc
@@ -69,7 +69,7 @@ make opt
 
 \verbatim
 ln -sf /<absolute_path>/gtnets_current/libgtsim-debug.so /<userhome>/usr/lib/libgtnets.so
-export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/<userhome>/usr/lib/libgtnets.so
+export LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}/<userhome>/usr/lib/
 mkdir /<userhome>/usr/include/gtnets
 cp -fr SRC/*.h /<userhome>/usr/include/gtnets
 \endverbatim