ifeq "$(GhcRtsWithFrontPanel)" "YES"
SRC_HC_OPTS += `$(GTK_CONFIG) --cflags` -optc-DRTS_GTK_FRONTPANEL
VisCallbacks_CC_OPTS += -Wno-unused
+SRC_MKDEPENDC_OPTS += `$(GTK_CONFIG) --cflags`
else # GhcRtsWithFrontPanel
EXCLUDED_SRCS += $(wildcard Vis*.c)
endif