Running Cog Applications

Environment Variables

The runtime behaviour of the Cog core library can be influenced by a number of environment variables.

COG_MODULEDIR

Allows to specify a non-default location where to search for platform plug-in modules. The default location is under <libdir>/cog/modules unless a custom location was specified during configuration when building. See cog_modules_add_directory() and cog_init() for more information.

COG_PLATFORM_NAME

This variable can be set to the name of the platform plug-in module to use and prevent automatically determining which one to use. See cog_init() for more information.

COG_PLATFORM_PARAMS

This variable may contain setup parameters for the chosen platform plug-in module. The parameters supported by each platform may be found in their respective documentation pages. The format of the parameters string is typically (but not always) a comma-separated list of variable=value assignments. See cog_platform_setup() for more information.