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16.8 Sharing Defaults

If you want to set default values for configure scripts to share, you can create a site shell script called that gives default values for variables like CC, cache_file, and prefix. configure looks for prefix/share/ if it exists, then prefix/etc/ if it exists. Or, you can set the CONFIG_SITE environment variable to the location of the site script. A warning: not all configure scripts look for a site script.