.PHONY: clean all bench prepare

SOURCES=$(wildcard *.c)
BASENAMES=$(SOURCES:.c=)
GCCEXES=$(SOURCES:.c=.gcc)
GCCEXES=$(SOURCES:.c=.ogcc)
ACCEXES=$(SOURCES:.c=.acc)
EXES=$(GCCEXES) $(ACCEXES)
RESULTS=$(SOURCES:.c=.result)

GCC=gcc
CFLAGS=-O0
OFLAGS=-O2

ACC=./acc.run
TIME=./meantime.sh

all: bench

%.gcc: %.c
	@ $(GCC) $(CPPFLAGS) $(CFLAGS) -o $@ $<

%.ogcc: %.c
	@ $(GCC) $(CPPFLAGS) $(OFLAGS) -o $@ $<

%.s: %.c
	@ $(ACC) $<

%.acc: %.s
	@ $(GCC) $(CPPFLAGS) $(CFLAGS) -o $@ $<

%.acc-run: %.acc 
	@ $(TIME) -f %U ./$< > $@

%.gcc-run: %.gcc
	@ $(TIME) -f %U ./$< > $@

%.ogcc-run: %.ogcc
	@ $(TIME) -f %U ./$< > $@

%.ratio1: %.acc-run %.gcc-run
	@ echo "print round(`cat $*.acc-run` / `cat $*.gcc-run`, 2)" | python > $@

%.ratio2: %.acc-run %.ogcc-run
	@ echo "print round(`cat $*.acc-run` / `cat $*.ogcc-run`, 2)" | python > $@

%.announce: 
	@ echo Benchmarking "$*.c"...
	@ echo "$*.c" > $@

%.result: %.announce %.acc-run %.gcc-run %.ogcc-run %.ratio1 %.ratio2
	@ cat $^ | tr '\n' '&' > $@

prepare:
	rm --force *.announce

bench: prepare $(RESULTS)
	@ echo '& acc & gcc -O0 & gcc -O2 & 1/2 & 1/3 \\'
	@ for i in $(BASENAMES); do cat $$i.result; echo '\\'; done

clean:	
	rm --force $(EXES) $(RESULTS) \
           *.gcc-run *.ogcc-run *.acc-run *.ratio* *.announce *.Clight *.ASM