Runtime environment variables

The following environment variables are used by the system loader or by your application when it is executed. All of these variables are optional.

LD_LIBRARY_PATH
Specifies an alternate directory search path for dynamically linked libraries at application run time. If shared libraries required by your application have been moved to an alternate directory that was not specified at link time, and you do not want to relink the executable, you can set this environment variable to allow the dynamic linker to locate them at run time. For more information about this environment variable, see your operating system documentation.
PDFDIR
Optionally specifies the directory in which profiling information is saved when you run an application that you have compiled with the -qpdf1 option. The default value is unset, and the compiler places the profile data file in the current working directory. When you recompile or relink your application with -qpdf2, the compiler uses the data saved in this directory to optimize the application. It is recommended that you set this variable to an absolute path if you will be using profile-directed feedback. See -qpdf1, -qpdf2 for more information.
PDF_BIND_PROCESSOR
If you want to bind your process to a particular processor, you can specify PDF_BIND_PROCESSOR to bind the process tree from the executable to a different processor. Processor 0 is set by default.