perl_check_env

# @FUNCTION: perl_check_env

# @USAGE: perl_check_env

# @DESCRIPTION:

# Checks a blacklist of known-suspect ENV values that can be accidentally set by users

# doing personal perl work, which may accidentally leak into portage and break the

# system perl installaton.

# Dies if any of the suspect fields are found, and tells users the circumvention options

# for the problem, whether it be unsetting the bad fields, or setting 

# I_KNOW_WHAT_IM_DOING=1

perl_clean_env() {

	local errored value;

	for i in PERL_MM_OPT PERL5LIB PERL5OPT PERL_MB_OPT PERL_CORE PERLPREFIX; do

		# Next unless match

		[ -v $i ] || continue;

		# Warn only once, and warn only when one of the bad values are set.

		# record failure here.

		[ ${errored:-0} == 0 ] && \

			ewarn "perl-module.eclass: Suspect ENV values found.";

		errored=1

		# Read ENV Value

		eval "value=\$$i";

		# Print ENV name/value pair

		ewarn "    $i=\"$value\"";

	done

	# Return if there were no failures

	[ ${errored:-0} == 0 ] && return;

	# Return if user knows what they're doing

	if [ ${I_KNOW_WHAT_IM_DOING:-0} == 1 ]; then

		ewarn "Continuing due to I_KNOW_WHAT_IM_DOING=1"

		return

	fi

	die "Please unset from ENV ( ~/.bashrc, package.env, etc ) or set I_KNOW_WHAT_IM_DOING=1"

}