We've just put in place a better set of CONFIG_SITE fragments to prevent random ports from picking up gnu-tools.
This is probably grow in the near future. For now, if your port *really* requires some gnu tools, be sure to have the right BUILD_DEPENDS, as the cache will say "nope, they don't live there" otherwise. e.g., unless BUILD_DEPENDS includes sysutils/ggrep, configure will assume (correctly) our *grep work just fine, thank you.
