SHELL := $(shell which bash)
.ONESHELL:

ATT = $(EXE:=.att)
DAT = $(EXE:=.data) $(EXE:=.data.old)
EXE = $(basename $(SRC))
GBM = $(basename $(shell grep -l benchmark.h $(SRC)))
LOG = $(EXE:=.log)
SRC = $(wildcard *.c *.cc)

CFLAGS = -fanalyzer -O3 -Wall
CXXFLAGS += $(CFLAGS) -std=c++20
$(GBM): LDLIBS += $(shell pkg-config --libs benchmark)

all: exe

att: $(ATT)

clean:
	-rm -fv $(ATT) $(DAT) $(EXE) $(LOG) core.* *~

com: $(filter com_%,$(EXE))
	@for i in $^; do
		printf "\e[1;34m%64s\n ¬$${i}¬\n%64s\n\e[0m" | tr ' ¬' '# '; ./$$i
	done

exe: $(EXE)

run: $(EXE)
	@for i in $^; do
		printf "\e[1;32m%64s\n ¬$${i}¬\n%64s\n\e[0m" | tr ' ¬' '# '; ./$${i}
	done

%.att: %
	objdump -Cd $< > $@

%.log: %
	valgrind --tool=callgrind --branch-sim=yes --cache-sim=yes --callgrind-out-file=$*.log --collect-bus=yes --collect-jumps=yes --dump-instr=yes --dump-line=yes -- ./$<

%.cg: %.log
	kcachegrind $<

%.data: %
	perf record -g -o $@ -- ./$<
#	perf record -e cycles:ku -F max -g -o $@ -- ./$<

%.perf: %.data
	perf report -g 'graph,0.5,caller' -i $<

.PHONY: all att clean com exe run
.PRECIOUS: $(DAT) $(LOG)