# Driver sources
DRIVERS ?= apc testapc
+# Debug Level
+DEBUG ?= 1
+
# Yacc
YACC := bison
YFLAGS ?= -v -d -Wall
# Ragel
RLC ?= ragel
-RLFALGS ?= -C
+RLFLAGS ?= -C
RLCMD = $(strip $(RLC) $(RLFLAGS) $(if $2,-o $2 $(dir $2))$1)
# C
# Deps should be generated for each source file, when not cleaning
cGENDEP = $(if $(wildcard $1),$(subst $(dir $1),,$(filter-out $1 \ %:,$(shell $(CC) -MM -MG $1))),\
$(info [<$1>: no deps - file not found]))
+# Filter only missing deps
+cMISDEP = $(strip $(foreach dep,$(call cGENDEP,$1),$(if $(wildcard src/$(dep)),,$(dep))))
# S2S will print the command necessary to create a file when called
S2S = $(if $(filter $2,$(call NEWER,$2,$3)),$(eval 4 := t),$(eval 4 :=))
S2S += $(if $4,$(info $(call $1,$2,$3)))
# Rules
.SECONDEXPANSION:
$(ldTRG): $$(call ldDEP,$$@) | $(hGEN) ; $(call LDCMD,$^,$@)
-%-d.o: CFLAGS+= -Og -ggdb
-%.o %-d.o: %.c $$(call cGENDEP,$$(dir $$@)%.c) ; $(call CCMD,$<,$@)
+%-d.o: CFLAGS+= -Og -ggdb -DDEBUG=$(DEBUG)
+%.o %-d.o: %.c $$(call cGENDEP,$$(dir $$@)%.c); $(call CCMD,$<,$@)
+%.o %-d.o: %.c; $(error Missing dependencies for $<: $(call cMISDEP, $<))
%.tab.h: %.tab.c ;
%.tab.c: %.y $$(call S2S,YCMD,%.y,$$@) ;
%.fsm.c: %.rl $$(call S2S,RLCMD,%.rl,$$@) ;