CC = gcc
CFA = cfa
DEPFLAGS = -MMD -MP
ifdef DBG
CFLAGS = -O0 -ggdb -DN=500
else
CFLAGS = -O2
ifdef N
CFLAGS += -DN=$(N)
endif
endif
CXXFLAGS = $(CFLAGS) --std=c++14
MAKEFILE_NAME = ${firstword ${MAKEFILE_LIST}}

.PHONY : all clean run-c run-cpp run-cfa run

all : c-bench cpp-bench cpp-vbench cfa-bench

# rewrite object generation to auto-determine deps
COMPILE.c = $(CC) $(DEPFLAGS) $(CFLAGS) $(CPPFLAGS)
COMPILE.cpp = $(CXX) $(DEPFLAGS) $(CXXFLAGS) $(CPPFLAGS)
COMPILE.cfa = $(CFA) $(DEPFLAGS) $(CFLAGS) $(CPPFLAGS)

c-%.o : c-%.c
	$(COMPILE.c) $(OUTPUT_OPTION) -c $<

cpp-%.o : cpp-%.cpp
	$(COMPILE.cpp) $(OUTPUT_OPTION) -c $<

cfa-%.o : cfa-%.c
	$(COMPILE.cfa) $(OUTPUT_OPTION) -c $<

COBJS = c-stack.o c-pair.o c-bench.o
CPPOBJS = cpp-bench.o
CPPVOBJS = cpp-vstack.o cpp-vbench.o
CFAOBJS = cfa-stack.o cfa-pair.o cfa-bench.o

${COBJS} ${CPPOBJS} ${CPPVOBJS} ${CFAOBJS} : ${MAKEFILE_NAME}

CFILES = bench.h $(patsubst c-bench.h,,$(COBJS:.o=.h)) $(COBJS:.o=.c)
CPPFILES = bench.hpp cpp-stack.hpp cpp-pair.hpp $(CPPOBJS:.o=.cpp)
CPPVFILES = bench.hpp object.hpp $(patsubst cpp-vbench.hpp,,$(CPPVOBJS:.o=.hpp)) $(CPPVOBJS:.o=.cpp)
CFAFILES = bench.h $(patsubst cfa-bench.h,,$(CFAOBJS:.o=.h)) $(CFAOBJS:.o=.c)

c-bench : $(COBJS) c-bench.o
	$(COMPILE.c) $(LDFLAGS) $^ -o $@

cpp-bench : $(CPPOBJS) cpp-bench.o
	$(COMPILE.cpp) $(LDFLAGS) $^ -o $@

cpp-vbench : $(CPPVOBJS) cpp-vbench.o
	$(COMPILE.cpp) $(LDFLAGS) $^ -o $@

cfa-bench : $(CFAOBJS) cfa-bench.o
	$(COMPILE.cfa) $(LDFLAGS) $^ -o $@

# include dependency files
-include $(COBJS:.o=.d)
-include $(CPPOBJS:.o=.d)
-include $(CPPVOBJS:.o=.d)
-include $(CFAOBJS:.o=.d)

clean :
	rm -f $(COBJS) $(COBJS:.o=.d) c-bench
	rm -f $(CPPOBJS) $(CPPOBJS:.o=.d) cpp-bench
	rm -f $(CPPVOBJS) $(CPPVOBJS:.o=.d) cpp-vbench
	rm -f $(CFAOBJS) $(CFAOBJS:.o=.d) cfa-bench

run-c : c-bench
	@echo
	@echo '## C ##'
	@/usr/bin/time -f 'max_memory:\t%M kilobytes' ./$<
	@printf 'source_size:\t%8d lines\n' `cat $(CFILES) | wc -l`
	@printf 'redundant_type_annotations:%8d lines\n' `cat $(CFILES) | fgrep '/***/' -c`
	@printf 'binary_size:\t%8d bytes\n' `stat -c %s $<`

run-cpp : cpp-bench
	@echo
	@echo '## C++ ##'
	@/usr/bin/time -f 'max_memory:\t %M kilobytes' ./$<
	@printf 'source_size:\t%8d lines\n' `cat $(CPPFILES) | wc -l`
	@printf 'redundant_type_annotations:%8d lines\n' `cat $(CPPFILES) | fgrep '/***/' -c`
	@printf 'binary_size:\t%8d bytes\n' `stat -c %s $<`

run-cppv : cpp-vbench
	@echo
	@echo '## C++obj ##'
	@/usr/bin/time -f 'max_memory:\t%M kilobytes' ./$<
	@printf 'source_size:\t%8d lines\n' `cat $(CPPVFILES) | wc -l`
	@printf 'redundant_type_annotations:%8d lines\n' `cat $(CPPVFILES) | fgrep '/***/' -c`
	@printf 'binary_size:\t%8d bytes\n' `stat -c %s $<`

run-cfa : cfa-bench
	@echo
	@echo '## Cforall ##'
	@/usr/bin/time -f 'max_memory:\t %M kilobytes' ./$<
	@printf 'source_size:\t%8d lines\n' `cat $(CFAFILES) | wc -l`
	@printf 'redundant_type_annotations:%8d lines\n' `cat $(CFAFILES) | fgrep '/***/' -c`
	@printf 'binary_size:\t%8d bytes\n' `stat -c %s $<`

run : run-c run-cfa run-cpp run-cppv