CONFIGURE_FLAGS_STAGE2 += $(USE_STAGE1_CONFIGURE_FLAGS)
CONFIGURE_FLAGS_STAGE3 += $(USE_STAGE2_CONFIGURE_FLAGS)
CONFIGURE_FLAGS_STAGE2 += $(USE_STAGE1_CONFIGURE_FLAGS)
CONFIGURE_FLAGS_STAGE3 += $(USE_STAGE2_CONFIGURE_FLAGS)
$(CABAL) configure --distpref dist-stage$* \
$(CONFIGURE_FLAGS_STAGE$*) \
$(INSTALL_DIRS_CONFIGURE_FLAGS) \
$(CABAL) configure --distpref dist-stage$* \
$(CONFIGURE_FLAGS_STAGE$*) \
$(INSTALL_DIRS_CONFIGURE_FLAGS) \