Gentoo's Bugzilla –
Attachment 603932 Details for
Bug 706012=dev-java/openjdk-11.0.5_p10: No rule to make target '/var/tmp/portage/dev-java/openjdk-11.0.5_p10/work/jdk11u-jdk-11.0.5+10/build/linux-arm-normal-server-release/make-support/vardeps/make/ModuleWrapper.gmk/java.base/ORDERED_CFG_VARIANTS.vardeps'