%general-entities; ]> GLIBC /etc/ld.so.conf By default, the dynamic loader (/lib/ld.so.1 for 32bit executables /lib32/ld.so.1 for n32 executables and /lib64/ld.so.1 for 64bit executables) searches through /lib and /usr/lib for dynamic libraries that are needed by programs as they are run. However, if there are libraries in directories other than /lib and /usr/lib, these need to be added to the /etc/ld.so.conf file in order for the dynamic loader to find them. Some directories that are commonly known to contain additional libraries are /usr/local/lib, /usr/local/lib32, /usr/local/lib64, /opt/lib, /opt/lib32, and /opt/lib64, so add those directories to the dynamic loader's search path. Create a new file /etc/ld.so.conf by running the following: cat > /etc/ld.so.conf << "EOF" # Begin /etc/ld.so.conf /usr/local/lib /usr/local/lib32 /usr/local/lib64 /opt/lib /opt/lib32 /opt/lib64 # End /etc/ld.so.conf EOF