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3.2 Configuring Elephant

Before you can load the elephant packages into your running lisp, you need to setup the configuration file. Copy the reference file config.sexp from the root directory to my-config.sexp in the root directory. my-config.sexp contains a lisp reader-formatted list of key-value pairs that tells elephant where to find various libraries and how to build them.

For example:

     #+(and (or sbcl allegro) macosx)
     ((:berkeley-db-include-dir . "/opt/local/include/db45/")
      (:berkeley-db-lib-dir . "/opt/local/lib/db45/")
      (:berkeley-db-lib . "/opt/local/lib/db45/libdb-4.5.dylib")
      (:berkeley-db-deadlock . "/opt/local/bin/db45_deadlock")
      (:compiler . :gcc))

The following is a guide to the various parameters. For simplicity, we include all the parameters here, although we will go into more detail in each of the data store sections.

The config.sexp file contains a set of example configurations to start from, but you will most likely need to modify it for your system.

Elephant has one small C library that it uses for binary serialization. This means that you need to have gcc in your path (see Elephant on Windows for exceptions on the Windows platform).