FB_EXE               ?= $(notdir $(shell pwd))
FB_NAME              ?= $(shell pwd | xargs dirname | sed 's/-/_/g')
FB_NAME_PREFIX       ?= $(FB_NAME)_
FB_SRC               ?= $(wildcard *.y *.l)
FB_SRC_Y             ?= $(filter %.y,$(FB_SRC))
FB_SRC_L             ?= $(filter %.l,$(FB_SRC))
FB_FLEX_PREFIX       ?= $(FB_NAME_PREFIX)
FB_HDRDIR            ?= .
FB_OUT_EXT           ?= c
FB_BISON_OUT_EXT     ?= $(FB_OUT_EXT)
FB_FLEX_OUT_EXT      ?= $(FB_OUT_EXT)
FB_CFLAGS            ?= -D"FB_SYM(x)=$(FB_NAME_PREFIX)\#\#x"
FB_CPPFLAGS          ?= -std=c++11 $(FB_CFLAGS)
FB_COMMON_H          ?=
FB_FLEX_OUT_C         = $(patsubst %.l,lex.%.$(FB_FLEX_OUT_EXT),$(FB_SRC_L))
FB_FLEX_OUT_H         = $(patsubst %.l,$(FB_HDRDIR)/lex.%.h,$(FB_SRC_L))
FB_BISON_OUT_C       ?= $(patsubst %.y,%.tab.$(FB_BISON_OUT_EXT),$(FB_SRC_Y))
FB_BISON_OUT_H       ?= $(patsubst %.y,$(FB_HDRDIR)/%.tab.h,$(FB_SRC_Y))
FB_GENERATED_H       += $(FB_FLEX_OUT_H) $(FB_BISON_OUT_H) $(FB_COMMON_H)
FB_GENERATED_C       += $(FB_FLEX_OUT_C) $(FB_BISON_OUT_C)
FB_GENERATED_C_H     += $(FB_GENERATED_C) $(FB_GENERATED_H)
FB_SRC_C             += $(FB_GENERATED_C) $(filter-out $(FB_GENERATED_C),$(wildcard *.c) $(wildcard *.cpp))
FB_OBJ                = $(patsubst %.cpp,%.o,$(patsubst %.c,%.o,$(FB_SRC_C)))
FB_BISON_OPTS        ?= --name-prefix=$(FB_NAME_PREFIX)
FB_BISON_EXTRA_OPTS  ?=
FB_FLEX_OPTS         ?= --prefix=$(FB_FLEX_PREFIX)
FB_FLEX_EXTRA_OPTS   ?=
ifneq ($(filter cpp,$(FB_BISON_OUT_EXT) $(FB_FLEX_OUT_EXT)),)
  FB_CPPFLAGS        += -Wno-sign-compare
endif

ifeq ($(FB_CASE_INSENSITIVE),true)
  FB_FLEX_OPTS       += -i
endif

# serving tools.mk and friends
SRC_ALL_CPP          += $(FB_GENERATED_C)
OBJ                  += $(FB_OBJ)
LOCAL_CFLAGS         += $(FB_CFLAGS)
LOCAL_CPPFLAGS       += $(FB_CPPFLAGS)
LOCAL_LDFLAGS        += -lfl

.PRECIOUS: lex.%.c %.tab.$(BISON_OUT_EXT)

all:
install:
clean: clean.flex-bison
distclean: clean

exe: $(FB_EXE)

include $(MODDIR)/make/depend.mk

$(DEPEND_MK): $(FB_GENERATED_C_H)

%.tab.$(FB_BISON_OUT_EXT) $(FB_HDRDIR)/%.tab.h: %.y $(FB_COMMON_H)
	bison \
		--report=state,solved \
		--defines=$(patsubst %.tab.$(FB_BISON_OUT_EXT),$(FB_HDRDIR)/%.tab.h,$@) \
		--report-file=$(patsubst %.tab.$(FB_BISON_OUT_EXT),report-%.tab.txt,$@) \
		--xml=$(patsubst %.tab.$(FB_BISON_OUT_EXT),report-%.tab.xml,$@) \
		--graph=$(patsubst %.tab.$(FB_BISON_OUT_EXT),graph-%.tab.txt,$@) \
		$(FB_BISON_OPTS) $(FB_BISON_EXTRA_OPTS) -v -t $< -o $@

lex.%.$(FB_FLEX_OUT_EXT) $(FB_HDRDIR)/lex.%.h: %.l $(FB_COMMON_H)
	flex -i --header-file=$(FB_HDRDIR)/lex.$*.h $(FB_FLEX_OPTS) $(FB_FLEX_EXTRA_OPTS) -o $@ $<

%.tab.o: lex.%.o

#%.o: %.c
#	gcc -D"FB_SYM(x)=$(FB_NAME_PREFIX)##x" $(FB_CFLAGS) -c $<
#
#%.o: %.cpp
#	gcc -D"FB_SYM(x)=$(FB_NAME_PREFIX)##x" $(FB_CFLAGS) $(FB_CPPFLAGS) -c $<

#$(FB_EXE): $(FB_OBJ)
#	g++ -g -o $(FB_EXE) $^ -lfl

clean.flex-bison:
	$(RM) -f $(FB_GENERATED_C) $(FB_HDRDIR)/*.tab.h $(FB_HDRDIR)/lex.*.h *.output  $(FB_EXE) *.tmp $(FB_OBJ) *.rep $(FB_HDRDIR)/*.rep
	$(RM) -f graph-*.txt report-*.xml report-*.txt
echo-vars: echo-vars-flex-bison

echo-vars-flex-bison:
	@echo FB_GENERATED_C_H = $(FB_GENERATED_C_H)