--- old/bin/phase-functions.sh	2023-01-16 05:11:19.000000000 +0700
+++ new/bin/phase-functions.sh	2023-03-26 23:26:17.000000000 +0700
@@ -165,6 +165,19 @@
 	# Otherwise, we don't need to filter the environment.
 	[[ -f "${T}/environment.raw" ]] || return 0
 
+	local make_config="" make_opts_local="" make_opts_env="" make_opts_envprefix=""
+	if [[ "${EMERGE_FROM}" = binary ]]; then
+		make_config="$(dirname "${PORTAGE_BASHRC}")/make.conf"
+		if [ -f "${make_config}" ]; then
+			make_opts_local="$(grep "^MAKEOPTS" "${make_config}")"
+			make_opts_env="$(grep "MAKEOPTS=" "${T}/environment")"
+			make_opts_envprefix="${make_opts_env%MAKEOPTS*}"
+			#echo "******* MAKEOPTS_local=${make_opts_envprefix}${make_opts_local} *******"
+			#echo "******* MAKEOPTS_env  =${make_opts_env} *******"
+			sed -i "s/${make_opts_env}/${make_opts_envprefix}${make_opts_local}/" "${T}/environment"
+		fi
+	fi
+
 	__filter_readonly_variables ${_portage_filter_opts} < "${T}"/environment \
 		>> "${T}/environment.filtered" || return $?